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-rw-r--r--drivers/acpi/Kconfig18
-rw-r--r--drivers/acpi/ac.c1
-rw-r--r--drivers/acpi/acpi_pad.c1
-rw-r--r--drivers/acpi/acpi_platform.c24
-rw-r--r--drivers/acpi/acpi_processor.c21
-rw-r--r--drivers/acpi/acpica/acglobal.h7
-rw-r--r--drivers/acpi/acpica/aclocal.h4
-rw-r--r--drivers/acpi/acpica/acnamesp.h4
-rw-r--r--drivers/acpi/acpica/actables.h7
-rw-r--r--drivers/acpi/acpica/acutils.h4
-rw-r--r--drivers/acpi/acpica/evgpeinit.c11
-rw-r--r--drivers/acpi/acpica/exdump.c6
-rw-r--r--drivers/acpi/acpica/exoparg1.c48
-rw-r--r--drivers/acpi/acpica/hwesleep.c9
-rw-r--r--drivers/acpi/acpica/hwtimer.c13
-rw-r--r--drivers/acpi/acpica/nspredef.c16
-rw-r--r--drivers/acpi/acpica/nswalk.c26
-rw-r--r--drivers/acpi/acpica/nsxfeval.c16
-rw-r--r--drivers/acpi/acpica/nsxfname.c11
-rw-r--r--drivers/acpi/acpica/tbfadt.c4
-rw-r--r--drivers/acpi/acpica/tbxfroot.c12
-rw-r--r--drivers/acpi/acpica/uteval.c8
-rw-r--r--drivers/acpi/acpica/utglobal.c1
-rw-r--r--drivers/acpi/acpica/utosi.c77
-rw-r--r--drivers/acpi/acpica/utstring.c5
-rw-r--r--drivers/acpi/acpica/utxface.c29
-rw-r--r--drivers/acpi/battery.c21
-rw-r--r--drivers/acpi/blacklist.c30
-rw-r--r--drivers/acpi/bus.c142
-rw-r--r--drivers/acpi/button.c2
-rw-r--r--drivers/acpi/device_pm.c34
-rw-r--r--drivers/acpi/dock.c400
-rw-r--r--drivers/acpi/ec.c10
-rw-r--r--drivers/acpi/event.c106
-rw-r--r--drivers/acpi/fan.c4
-rw-r--r--drivers/acpi/glue.c91
-rw-r--r--drivers/acpi/internal.h1
-rw-r--r--drivers/acpi/numa.c2
-rw-r--r--drivers/acpi/osl.c86
-rw-r--r--drivers/acpi/pci_slot.c14
-rw-r--r--drivers/acpi/power.c6
-rw-r--r--drivers/acpi/processor_core.c2
-rw-r--r--drivers/acpi/processor_driver.c8
-rw-r--r--drivers/acpi/processor_perflib.c22
-rw-r--r--drivers/acpi/processor_thermal.c12
-rw-r--r--drivers/acpi/resource.c4
-rw-r--r--drivers/acpi/sbs.c15
-rw-r--r--drivers/acpi/scan.c272
-rw-r--r--drivers/acpi/sleep.c48
-rw-r--r--drivers/acpi/thermal.c49
-rw-r--r--drivers/acpi/utils.c70
-rw-r--r--drivers/acpi/video.c246
-rw-r--r--drivers/acpi/video_detect.c19
-rw-r--r--drivers/ata/libata-acpi.c4
-rw-r--r--drivers/base/core.c43
-rw-r--r--drivers/base/cpu.c2
-rw-r--r--drivers/base/memory.c4
-rw-r--r--drivers/base/power/main.c77
-rw-r--r--drivers/base/power/opp.c1
-rw-r--r--drivers/bus/arm-cci.c28
-rw-r--r--drivers/char/sonypi.c5
-rw-r--r--drivers/cpufreq/Kconfig.arm36
-rw-r--r--drivers/cpufreq/Makefile2
-rw-r--r--drivers/cpufreq/acpi-cpufreq.c12
-rw-r--r--drivers/cpufreq/arm_big_little_dt.c40
-rw-r--r--drivers/cpufreq/at32ap-cpufreq.c1
-rw-r--r--drivers/cpufreq/blackfin-cpufreq.c1
-rw-r--r--drivers/cpufreq/cpufreq-cpu0.c32
-rw-r--r--drivers/cpufreq/cpufreq-nforce2.c1
-rw-r--r--drivers/cpufreq/cpufreq.c738
-rw-r--r--drivers/cpufreq/cpufreq_conservative.c18
-rw-r--r--drivers/cpufreq/cpufreq_governor.c30
-rw-r--r--drivers/cpufreq/cpufreq_governor.h20
-rw-r--r--drivers/cpufreq/cpufreq_ondemand.c66
-rw-r--r--drivers/cpufreq/cpufreq_performance.c3
-rw-r--r--drivers/cpufreq/cpufreq_powersave.c3
-rw-r--r--drivers/cpufreq/cpufreq_stats.c31
-rw-r--r--drivers/cpufreq/cris-artpec3-cpufreq.c1
-rw-r--r--drivers/cpufreq/cris-etraxfs-cpufreq.c1
-rw-r--r--drivers/cpufreq/e_powersaver.c5
-rw-r--r--drivers/cpufreq/elanfreq.c1
-rw-r--r--drivers/cpufreq/exynos-cpufreq.c3
-rw-r--r--drivers/cpufreq/exynos-cpufreq.h21
-rw-r--r--drivers/cpufreq/exynos5440-cpufreq.c3
-rw-r--r--drivers/cpufreq/freq_table.c4
-rw-r--r--drivers/cpufreq/gx-suspmod.c5
-rw-r--r--drivers/cpufreq/highbank-cpufreq.c18
-rw-r--r--drivers/cpufreq/ia64-acpi-cpufreq.c5
-rw-r--r--drivers/cpufreq/imx6q-cpufreq.c21
-rw-r--r--drivers/cpufreq/intel_pstate.c1
-rw-r--r--drivers/cpufreq/kirkwood-cpufreq.c9
-rw-r--r--drivers/cpufreq/longhaul.c1
-rw-r--r--drivers/cpufreq/longrun.c1
-rw-r--r--drivers/cpufreq/loongson2_cpufreq.c1
-rw-r--r--drivers/cpufreq/maple-cpufreq.c24
-rw-r--r--drivers/cpufreq/mperf.c51
-rw-r--r--drivers/cpufreq/mperf.h9
-rw-r--r--drivers/cpufreq/p4-clockmod.c1
-rw-r--r--drivers/cpufreq/pasemi-cpufreq.c1
-rw-r--r--drivers/cpufreq/pcc-cpufreq.c1
-rw-r--r--drivers/cpufreq/pmac32-cpufreq.c6
-rw-r--r--drivers/cpufreq/pmac64-cpufreq.c53
-rw-r--r--drivers/cpufreq/powernow-k6.c1
-rw-r--r--drivers/cpufreq/powernow-k7.c14
-rw-r--r--drivers/cpufreq/powernow-k8.c7
-rw-r--r--drivers/cpufreq/ppc-corenet-cpufreq.c1
-rw-r--r--drivers/cpufreq/ppc_cbe_cpufreq.c1
-rw-r--r--drivers/cpufreq/pxa2xx-cpufreq.c4
-rw-r--r--drivers/cpufreq/pxa3xx-cpufreq.c6
-rw-r--r--drivers/cpufreq/s3c2416-cpufreq.c1
-rw-r--r--drivers/cpufreq/s3c24xx-cpufreq.c8
-rw-r--r--drivers/cpufreq/s3c64xx-cpufreq.c1
-rw-r--r--drivers/cpufreq/sc520_freq.c1
-rw-r--r--drivers/cpufreq/sh-cpufreq.c1
-rw-r--r--drivers/cpufreq/sparc-us2e-cpufreq.c6
-rw-r--r--drivers/cpufreq/sparc-us3-cpufreq.c6
-rw-r--r--drivers/cpufreq/spear-cpufreq.c4
-rw-r--r--drivers/cpufreq/speedstep-centrino.c1
-rw-r--r--drivers/cpufreq/speedstep-ich.c1
-rw-r--r--drivers/cpufreq/speedstep-smi.c1
-rw-r--r--drivers/cpufreq/tegra-cpufreq.c4
-rw-r--r--drivers/cpufreq/unicore2-cpufreq.c2
-rw-r--r--drivers/cpuidle/Kconfig20
-rw-r--r--drivers/cpuidle/Kconfig.arm29
-rw-r--r--drivers/cpuidle/Makefile9
-rw-r--r--drivers/cpuidle/coupled.c129
-rw-r--r--drivers/cpuidle/cpuidle-calxeda.c2
-rw-r--r--drivers/cpuidle/cpuidle-kirkwood.c5
-rw-r--r--drivers/cpuidle/cpuidle-ux500.c131
-rw-r--r--drivers/cpuidle/cpuidle.c94
-rw-r--r--drivers/cpuidle/governors/ladder.c12
-rw-r--r--drivers/cpuidle/governors/menu.c108
-rw-r--r--drivers/cpuidle/sysfs.c101
-rw-r--r--drivers/ide/ide-acpi.c5
-rw-r--r--drivers/mfd/db8500-prcmu.c4
-rw-r--r--drivers/of/base.c95
-rw-r--r--drivers/pci/hotplug/acpiphp.h55
-rw-r--r--drivers/pci/hotplug/acpiphp_core.c18
-rw-r--r--drivers/pci/hotplug/acpiphp_glue.c1035
-rw-r--r--drivers/pci/hotplug/acpiphp_ibm.c3
-rw-r--r--drivers/pci/pci-acpi.c18
-rw-r--r--drivers/platform/x86/asus-laptop.c1
-rw-r--r--drivers/platform/x86/eeepc-laptop.c1
-rw-r--r--drivers/platform/x86/fujitsu-laptop.c4
-rw-r--r--drivers/platform/x86/panasonic-laptop.c3
-rw-r--r--drivers/platform/x86/sony-laptop.c4
-rw-r--r--drivers/platform/x86/thinkpad_acpi.c40
-rw-r--r--drivers/pnp/driver.c21
-rw-r--r--drivers/pnp/pnpacpi/core.c6
-rw-r--r--drivers/xen/acpi.c41
150 files changed, 2643 insertions, 2966 deletions
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index 100bd724f648..3278a210c435 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -91,24 +91,6 @@ config ACPI_EC_DEBUGFS
Thus this option is a debug option that helps to write ACPI drivers
and can be used to identify ACPI code or EC firmware bugs.
-config ACPI_PROC_EVENT
- bool "Deprecated /proc/acpi/event support"
- depends on PROC_FS
- default y
- help
- A user-space daemon, acpid, typically reads /proc/acpi/event
- and handles all ACPI-generated events.
-
- These events are now delivered to user-space either
- via the input layer or as netlink events.
-
- This build option enables the old code for legacy
- user-space implementation. After some time, this will
- be moved under CONFIG_ACPI_PROCFS, and then deleted.
-
- Say Y here to retain the old behaviour. Say N if your
- user-space is newer than kernel 2.6.23 (September 2007).
-
config ACPI_AC
tristate "AC Adapter"
depends on X86
diff --git a/drivers/acpi/ac.c b/drivers/acpi/ac.c
index 4f4e741d34b2..f37beaa32750 100644
--- a/drivers/acpi/ac.c
+++ b/drivers/acpi/ac.c
@@ -267,7 +267,6 @@ static void acpi_ac_notify(struct acpi_device *device, u32 event)
msleep(ac_sleep_before_get_state_ms);
acpi_ac_get_state(ac);
- acpi_bus_generate_proc_event(device, event, (u32) ac->state);
acpi_bus_generate_netlink_event(device->pnp.device_class,
dev_name(&device->dev), event,
(u32) ac->state);
diff --git a/drivers/acpi/acpi_pad.c b/drivers/acpi/acpi_pad.c
index 27bb6a91de5f..6230637054c6 100644
--- a/drivers/acpi/acpi_pad.c
+++ b/drivers/acpi/acpi_pad.c
@@ -452,7 +452,6 @@ static void acpi_pad_notify(acpi_handle handle, u32 event,
switch (event) {
case ACPI_PROCESSOR_AGGREGATOR_NOTIFY:
acpi_pad_handle_notify(handle);
- acpi_bus_generate_proc_event(device, event, 0);
acpi_bus_generate_netlink_event(device->pnp.device_class,
dev_name(&device->dev), event, 0);
break;
diff --git a/drivers/acpi/acpi_platform.c b/drivers/acpi/acpi_platform.c
index fafec5ddf17f..1bde12708f9e 100644
--- a/drivers/acpi/acpi_platform.c
+++ b/drivers/acpi/acpi_platform.c
@@ -52,7 +52,7 @@ int acpi_create_platform_device(struct acpi_device *adev,
struct platform_device_info pdevinfo;
struct resource_list_entry *rentry;
struct list_head resource_list;
- struct resource *resources;
+ struct resource *resources = NULL;
int count;
/* If the ACPI node already has a physical device attached, skip it. */
@@ -61,20 +61,22 @@ int acpi_create_platform_device(struct acpi_device *adev,
INIT_LIST_HEAD(&resource_list);
count = acpi_dev_get_resources(adev, &resource_list, NULL, NULL);
- if (count <= 0)
+ if (count < 0) {
return 0;
+ } else if (count > 0) {
+ resources = kmalloc(count * sizeof(struct resource),
+ GFP_KERNEL);
+ if (!resources) {
+ dev_err(&adev->dev, "No memory for resources\n");
+ acpi_dev_free_resource_list(&resource_list);
+ return -ENOMEM;
+ }
+ count = 0;
+ list_for_each_entry(rentry, &resource_list, node)
+ resources[count++] = rentry->res;
- resources = kmalloc(count * sizeof(struct resource), GFP_KERNEL);
- if (!resources) {
- dev_err(&adev->dev, "No memory for resources\n");
acpi_dev_free_resource_list(&resource_list);
- return -ENOMEM;
}
- count = 0;
- list_for_each_entry(rentry, &resource_list, node)
- resources[count++] = rentry->res;
-
- acpi_dev_free_resource_list(&resource_list);
memset(&pdevinfo, 0, sizeof(pdevinfo));
/*
diff --git a/drivers/acpi/acpi_processor.c b/drivers/acpi/acpi_processor.c
index 5a74a9c1e42c..f29e06efa479 100644
--- a/drivers/acpi/acpi_processor.c
+++ b/drivers/acpi/acpi_processor.c
@@ -178,14 +178,17 @@ static int acpi_processor_hotadd_init(struct acpi_processor *pr)
if (ACPI_FAILURE(status) || !(sta & ACPI_STA_DEVICE_PRESENT))
return -ENODEV;
+ cpu_maps_update_begin();
+ cpu_hotplug_begin();
+
ret = acpi_map_lsapic(pr->handle, &pr->id);
if (ret)
- return ret;
+ goto out;
ret = arch_register_cpu(pr->id);
if (ret) {
acpi_unmap_lsapic(pr->id);
- return ret;
+ goto out;
}
/*
@@ -195,7 +198,11 @@ static int acpi_processor_hotadd_init(struct acpi_processor *pr)
*/
pr_info("CPU%d has been hot-added\n", pr->id);
pr->flags.need_hotplug_init = 1;
- return 0;
+
+out:
+ cpu_hotplug_done();
+ cpu_maps_update_done();
+ return ret;
}
#else
static inline int acpi_processor_hotadd_init(struct acpi_processor *pr)
@@ -452,11 +459,15 @@ static void acpi_processor_remove(struct acpi_device *device)
per_cpu(processor_device_array, pr->id) = NULL;
per_cpu(processors, pr->id) = NULL;
+ cpu_maps_update_begin();
+ cpu_hotplug_begin();
+
/* Remove the CPU. */
- get_online_cpus();
arch_unregister_cpu(pr->id);
acpi_unmap_lsapic(pr->id);
- put_online_cpus();
+
+ cpu_hotplug_done();
+ cpu_maps_update_done();
try_offline_node(cpu_to_node(pr->id));
diff --git a/drivers/acpi/acpica/acglobal.h b/drivers/acpi/acpica/acglobal.h
index b8d38117a20c..90e846f985fa 100644
--- a/drivers/acpi/acpica/acglobal.h
+++ b/drivers/acpi/acpica/acglobal.h
@@ -138,6 +138,12 @@ u8 ACPI_INIT_GLOBAL(acpi_gbl_disable_auto_repair, FALSE);
*/
u8 ACPI_INIT_GLOBAL(acpi_gbl_disable_ssdt_table_load, FALSE);
+/*
+ * We keep track of the latest version of Windows that has been requested by
+ * the BIOS.
+ */
+u8 ACPI_INIT_GLOBAL(acpi_gbl_osi_data, 0);
+
/* acpi_gbl_FADT is a local copy of the FADT, converted to a common format. */
struct acpi_table_fadt acpi_gbl_FADT;
@@ -285,7 +291,6 @@ ACPI_EXTERN u8 acpi_gbl_debugger_configuration;
ACPI_EXTERN u8 acpi_gbl_step_to_next_call;
ACPI_EXTERN u8 acpi_gbl_acpi_hardware_present;
ACPI_EXTERN u8 acpi_gbl_events_initialized;
-ACPI_EXTERN u8 acpi_gbl_osi_data;
ACPI_EXTERN struct acpi_interface_info *acpi_gbl_supported_interfaces;
ACPI_EXTERN struct acpi_address_range
*acpi_gbl_address_range_list[ACPI_ADDRESS_RANGE_MAX];
diff --git a/drivers/acpi/acpica/aclocal.h b/drivers/acpi/acpica/aclocal.h
index d4a4901637cd..0ed00669cd21 100644
--- a/drivers/acpi/acpica/aclocal.h
+++ b/drivers/acpi/acpica/aclocal.h
@@ -942,6 +942,9 @@ struct acpi_interface_info {
#define ACPI_OSI_INVALID 0x01
#define ACPI_OSI_DYNAMIC 0x02
+#define ACPI_OSI_FEATURE 0x04
+#define ACPI_OSI_DEFAULT_INVALID 0x08
+#define ACPI_OSI_OPTIONAL_FEATURE (ACPI_OSI_FEATURE | ACPI_OSI_DEFAULT_INVALID | ACPI_OSI_INVALID)
struct acpi_port_info {
char *name;
@@ -1030,6 +1033,7 @@ struct acpi_external_list {
u8 type;
u8 flags;
u8 resolved;
+ u8 emitted;
};
/* Values for Flags field above */
diff --git a/drivers/acpi/acpica/acnamesp.h b/drivers/acpi/acpica/acnamesp.h
index b83dc32a5ae0..40b04bd5579e 100644
--- a/drivers/acpi/acpica/acnamesp.h
+++ b/drivers/acpi/acpica/acnamesp.h
@@ -104,8 +104,8 @@ acpi_ns_walk_namespace(acpi_object_type type,
acpi_handle start_object,
u32 max_depth,
u32 flags,
- acpi_walk_callback pre_order_visit,
- acpi_walk_callback post_order_visit,
+ acpi_walk_callback descending_callback,
+ acpi_walk_callback ascending_callback,
void *context, void **return_value);
struct acpi_namespace_node *acpi_ns_get_next_node(struct acpi_namespace_node
diff --git a/drivers/acpi/acpica/actables.h b/drivers/acpi/acpica/actables.h
index 7755e915a007..c54f42c64fe2 100644
--- a/drivers/acpi/acpica/actables.h
+++ b/drivers/acpi/acpica/actables.h
@@ -47,6 +47,13 @@
acpi_status acpi_allocate_root_table(u32 initial_table_count);
/*
+ * tbxfroot - Root pointer utilities
+ */
+acpi_status acpi_tb_validate_rsdp(struct acpi_table_rsdp *rsdp);
+
+u8 *acpi_tb_scan_memory_for_rsdp(u8 *start_address, u32 length);
+
+/*
* tbfadt - FADT parse/convert/validate
*/
void acpi_tb_parse_fadt(u32 table_index);
diff --git a/drivers/acpi/acpica/acutils.h b/drivers/acpi/acpica/acutils.h
index 3c76edea6803..d5a62a6182bb 100644
--- a/drivers/acpi/acpica/acutils.h
+++ b/drivers/acpi/acpica/acutils.h
@@ -470,6 +470,8 @@ acpi_status acpi_ut_install_interface(acpi_string interface_name);
acpi_status acpi_ut_remove_interface(acpi_string interface_name);
+acpi_status acpi_ut_update_interfaces(u8 action);
+
struct acpi_interface_info *acpi_ut_get_interface(acpi_string interface_name);
acpi_status acpi_ut_osi_implementation(struct acpi_walk_state *walk_state);
@@ -616,7 +618,7 @@ int acpi_ut_stricmp(char *string1, char *string2);
acpi_status acpi_ut_strtoul64(char *string, u32 base, u64 *ret_integer);
-void acpi_ut_print_string(char *string, u8 max_length);
+void acpi_ut_print_string(char *string, u16 max_length);
void ut_convert_backslashes(char *pathname);
diff --git a/drivers/acpi/acpica/evgpeinit.c b/drivers/acpi/acpica/evgpeinit.c
index 9037f17c9608..7842700346a4 100644
--- a/drivers/acpi/acpica/evgpeinit.c
+++ b/drivers/acpi/acpica/evgpeinit.c
@@ -125,7 +125,6 @@ acpi_status acpi_ev_gpe_initialize(void)
/* GPE block 0 exists (has both length and address > 0) */
register_count0 = (u16)(acpi_gbl_FADT.gpe0_block_length / 2);
-
gpe_number_max =
(register_count0 * ACPI_GPE_REGISTER_WIDTH) - 1;
@@ -204,16 +203,6 @@ acpi_status acpi_ev_gpe_initialize(void)
goto cleanup;
}
- /* Check for Max GPE number out-of-range */
-
- if (gpe_number_max > ACPI_GPE_MAX) {
- ACPI_ERROR((AE_INFO,
- "Maximum GPE number from FADT is too large: 0x%X",
- gpe_number_max));
- status = AE_BAD_VALUE;
- goto cleanup;
- }
-
cleanup:
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
return_ACPI_STATUS(AE_OK);
diff --git a/drivers/acpi/acpica/exdump.c b/drivers/acpi/acpica/exdump.c
index c740f24e3101..4d046faac48c 100644
--- a/drivers/acpi/acpica/exdump.c
+++ b/drivers/acpi/acpica/exdump.c
@@ -338,6 +338,7 @@ acpi_ex_dump_object(union acpi_operand_object *obj_desc,
{
u8 *target;
char *name;
+ const char *reference_name;
u8 count;
if (!info) {
@@ -426,10 +427,9 @@ acpi_ex_dump_object(union acpi_operand_object *obj_desc,
case ACPI_EXD_REFERENCE:
+ reference_name = acpi_ut_get_reference_name(obj_desc);
acpi_ex_out_string("Class Name",
- ACPI_CAST_PTR(char,
- acpi_ut_get_reference_name
- (obj_desc)));
+ ACPI_CAST_PTR(char, reference_name));
acpi_ex_dump_reference_obj(obj_desc);
break;
diff --git a/drivers/acpi/acpica/exoparg1.c b/drivers/acpi/acpica/exoparg1.c
index 814b4a3d656a..2cdd41d8ade6 100644
--- a/drivers/acpi/acpica/exoparg1.c
+++ b/drivers/acpi/acpica/exoparg1.c
@@ -962,10 +962,17 @@ acpi_status acpi_ex_opcode_1A_0T_1R(struct acpi_walk_state *walk_state)
*/
return_desc =
*(operand[0]->reference.where);
- if (return_desc) {
- acpi_ut_add_reference
- (return_desc);
+ if (!return_desc) {
+ /*
+ * Element is NULL, do not allow the dereference.
+ * This provides compatibility with other ACPI
+ * implementations.
+ */
+ return_ACPI_STATUS
+ (AE_AML_UNINITIALIZED_ELEMENT);
}
+
+ acpi_ut_add_reference(return_desc);
break;
default:
@@ -990,11 +997,40 @@ acpi_status acpi_ex_opcode_1A_0T_1R(struct acpi_walk_state *walk_state)
acpi_namespace_node
*)
return_desc);
- }
+ if (!return_desc) {
+ break;
+ }
- /* Add another reference to the object! */
+ /*
+ * June 2013:
+ * buffer_fields/field_units require additional resolution
+ */
+ switch (return_desc->common.type) {
+ case ACPI_TYPE_BUFFER_FIELD:
+ case ACPI_TYPE_LOCAL_REGION_FIELD:
+ case ACPI_TYPE_LOCAL_BANK_FIELD:
+ case ACPI_TYPE_LOCAL_INDEX_FIELD:
- acpi_ut_add_reference(return_desc);
+ status =
+ acpi_ex_read_data_from_field
+ (walk_state, return_desc,
+ &temp_desc);
+ if (ACPI_FAILURE(status)) {
+ goto cleanup;
+ }
+
+ return_desc = temp_desc;
+ break;
+
+ default:
+
+ /* Add another reference to the object */
+
+ acpi_ut_add_reference
+ (return_desc);
+ break;
+ }
+ }
break;
default:
diff --git a/drivers/acpi/acpica/hwesleep.c b/drivers/acpi/acpica/hwesleep.c
index 5e5f76230f5e..414076818d40 100644
--- a/drivers/acpi/acpica/hwesleep.c
+++ b/drivers/acpi/acpica/hwesleep.c
@@ -43,6 +43,7 @@
*/
#include <acpi/acpi.h>
+#include <linux/acpi.h>
#include "accommon.h"
#define _COMPONENT ACPI_HARDWARE
@@ -128,6 +129,14 @@ acpi_status acpi_hw_extended_sleep(u8 sleep_state)
ACPI_FLUSH_CPU_CACHE();
+ status = acpi_os_prepare_extended_sleep(sleep_state,
+ acpi_gbl_sleep_type_a,
+ acpi_gbl_sleep_type_b);
+ if (ACPI_SKIP(status))
+ return_ACPI_STATUS(AE_OK);
+ if (ACPI_FAILURE(status))
+ return_ACPI_STATUS(status);
+
/*
* Set the SLP_TYP and SLP_EN bits.
*
diff --git a/drivers/acpi/acpica/hwtimer.c b/drivers/acpi/acpica/hwtimer.c
index 0c1a8bbd05d6..2d7d22ebc782 100644
--- a/drivers/acpi/acpica/hwtimer.c
+++ b/drivers/acpi/acpica/hwtimer.c
@@ -100,8 +100,13 @@ acpi_status acpi_get_timer(u32 * ticks)
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
- status = acpi_hw_read(ticks, &acpi_gbl_FADT.xpm_timer_block);
+ /* ACPI 5.0A: PM Timer is optional */
+
+ if (!acpi_gbl_FADT.xpm_timer_block.address) {
+ return_ACPI_STATUS(AE_SUPPORT);
+ }
+ status = acpi_hw_read(ticks, &acpi_gbl_FADT.xpm_timer_block);
return_ACPI_STATUS(status);
}
@@ -148,6 +153,12 @@ acpi_get_timer_duration(u32 start_ticks, u32 end_ticks, u32 * time_elapsed)
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
+ /* ACPI 5.0A: PM Timer is optional */
+
+ if (!acpi_gbl_FADT.xpm_timer_block.address) {
+ return_ACPI_STATUS(AE_SUPPORT);
+ }
+
/*
* Compute Tick Delta:
* Handle (max one) timer rollovers on 24-bit versus 32-bit timers.
diff --git a/drivers/acpi/acpica/nspredef.c b/drivers/acpi/acpica/nspredef.c
index 24b71a01bf93..098e7666cbc9 100644
--- a/drivers/acpi/acpica/nspredef.c
+++ b/drivers/acpi/acpica/nspredef.c
@@ -151,6 +151,15 @@ acpi_ns_check_return_value(struct acpi_namespace_node *node,
}
/*
+ *
+ * 4) If there is no return value and it is optional, just return
+ * AE_OK (_WAK).
+ */
+ if (!(*return_object_ptr)) {
+ goto exit;
+ }
+
+ /*
* For returned Package objects, check the type of all sub-objects.
* Note: Package may have been newly created by call above.
*/
@@ -268,7 +277,12 @@ acpi_ns_check_object_type(struct acpi_evaluate_info *info,
acpi_ut_get_expected_return_types(type_buffer, expected_btypes);
- if (package_index == ACPI_NOT_PACKAGE_ELEMENT) {
+ if (!return_object) {
+ ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
+ info->node_flags,
+ "Expected return object of type %s",
+ type_buffer));
+ } else if (package_index == ACPI_NOT_PACKAGE_ELEMENT) {
ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
info->node_flags,
"Return type mismatch - found %s, expected %s",
diff --git a/drivers/acpi/acpica/nswalk.c b/drivers/acpi/acpica/nswalk.c
index e70911a9e441..e81f15ef659a 100644
--- a/drivers/acpi/acpica/nswalk.c
+++ b/drivers/acpi/acpica/nswalk.c
@@ -156,9 +156,9 @@ struct acpi_namespace_node *acpi_ns_get_next_node_typed(acpi_object_type type,
* max_depth - Depth to which search is to reach
* flags - Whether to unlock the NS before invoking
* the callback routine
- * pre_order_visit - Called during tree pre-order visit
+ * descending_callback - Called during tree descent
* when an object of "Type" is found
- * post_order_visit - Called during tree post-order visit
+ * ascending_callback - Called during tree ascent
* when an object of "Type" is found
* context - Passed to user function(s) above
* return_value - from the user_function if terminated
@@ -185,8 +185,8 @@ acpi_ns_walk_namespace(acpi_object_type type,
acpi_handle start_node,
u32 max_depth,
u32 flags,
- acpi_walk_callback pre_order_visit,
- acpi_walk_callback post_order_visit,
+ acpi_walk_callback descending_callback,
+ acpi_walk_callback ascending_callback,
void *context, void **return_value)
{
acpi_status status;
@@ -255,22 +255,22 @@ acpi_ns_walk_namespace(acpi_object_type type,
}
/*
- * Invoke the user function, either pre-order or post-order
+ * Invoke the user function, either descending, ascending,
* or both.
*/
if (!node_previously_visited) {
- if (pre_order_visit) {
+ if (descending_callback) {
status =
- pre_order_visit(child_node, level,
- context,
- return_value);
+ descending_callback(child_node,
+ level, context,
+ return_value);
}
} else {
- if (post_order_visit) {
+ if (ascending_callback) {
status =
- post_order_visit(child_node, level,
- context,
- return_value);
+ ascending_callback(child_node,
+ level, context,
+ return_value);
}
}
diff --git a/drivers/acpi/acpica/nsxfeval.c b/drivers/acpi/acpica/nsxfeval.c
index f553cfdb71dd..b38b4b07f86e 100644
--- a/drivers/acpi/acpica/nsxfeval.c
+++ b/drivers/acpi/acpica/nsxfeval.c
@@ -533,9 +533,9 @@ static void acpi_ns_resolve_references(struct acpi_evaluate_info *info)
* PARAMETERS: type - acpi_object_type to search for
* start_object - Handle in namespace where search begins
* max_depth - Depth to which search is to reach
- * pre_order_visit - Called during tree pre-order visit
+ * descending_callback - Called during tree descent
* when an object of "Type" is found
- * post_order_visit - Called during tree post-order visit
+ * ascending_callback - Called during tree ascent
* when an object of "Type" is found
* context - Passed to user function(s) above
* return_value - Location where return value of
@@ -563,8 +563,8 @@ acpi_status
acpi_walk_namespace(acpi_object_type type,
acpi_handle start_object,
u32 max_depth,
- acpi_walk_callback pre_order_visit,
- acpi_walk_callback post_order_visit,
+ acpi_walk_callback descending_callback,
+ acpi_walk_callback ascending_callback,
void *context, void **return_value)
{
acpi_status status;
@@ -574,7 +574,7 @@ acpi_walk_namespace(acpi_object_type type,
/* Parameter validation */
if ((type > ACPI_TYPE_LOCAL_MAX) ||
- (!max_depth) || (!pre_order_visit && !post_order_visit)) {
+ (!max_depth) || (!descending_callback && !ascending_callback)) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
@@ -606,9 +606,9 @@ acpi_walk_namespace(acpi_object_type type,
}
status = acpi_ns_walk_namespace(type, start_object, max_depth,
- ACPI_NS_WALK_UNLOCK, pre_order_visit,
- post_order_visit, context,
- return_value);
+ ACPI_NS_WALK_UNLOCK,
+ descending_callback, ascending_callback,
+ context, return_value);
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
diff --git a/drivers/acpi/acpica/nsxfname.c b/drivers/acpi/acpica/nsxfname.c
index f3a4d95899f7..83c164434580 100644
--- a/drivers/acpi/acpica/nsxfname.c
+++ b/drivers/acpi/acpica/nsxfname.c
@@ -158,6 +158,7 @@ acpi_get_name(acpi_handle handle, u32 name_type, struct acpi_buffer * buffer)
{
acpi_status status;
struct acpi_namespace_node *node;
+ char *node_name;
/* Parameter validation */
@@ -202,7 +203,8 @@ acpi_get_name(acpi_handle handle, u32 name_type, struct acpi_buffer * buffer)
/* Just copy the ACPI name from the Node and zero terminate it */
- ACPI_MOVE_NAME(buffer->pointer, acpi_ut_get_node_name(node));
+ node_name = acpi_ut_get_node_name(node);
+ ACPI_MOVE_NAME(buffer->pointer, node_name);
((char *)buffer->pointer)[ACPI_NAME_SIZE] = 0;
status = AE_OK;
@@ -379,9 +381,14 @@ acpi_get_object_info(acpi_handle handle,
* Get extra info for ACPI Device/Processor objects only:
* Run the _STA, _ADR and, sx_w, and _sx_d methods.
*
- * Note: none of these methods are required, so they may or may
+ * Notes: none of these methods are required, so they may or may
* not be present for this device. The Info->Valid bitfield is used
* to indicate which methods were found and run successfully.
+ *
+ * For _STA, if the method does not exist, then (as per the ACPI
+ * specification), the returned current_status flags will indicate
+ * that the device is present/functional/enabled. Otherwise, the
+ * current_status flags reflect the value returned from _STA.
*/
/* Execute the Device._STA method */
diff --git a/drivers/acpi/acpica/tbfadt.c b/drivers/acpi/acpica/tbfadt.c
index 33b00d22300a..9d99f2189693 100644
--- a/drivers/acpi/acpica/tbfadt.c
+++ b/drivers/acpi/acpica/tbfadt.c
@@ -117,7 +117,7 @@ static struct acpi_fadt_info fadt_info_table[] = {
ACPI_FADT_OFFSET(pm_timer_block),
ACPI_FADT_OFFSET(pm_timer_length),
ACPI_PM_TIMER_WIDTH,
- ACPI_FADT_REQUIRED},
+ ACPI_FADT_SEPARATE_LENGTH}, /* ACPI 5.0A: Timer is optional */
{"Gpe0Block",
ACPI_FADT_OFFSET(xgpe0_block),
@@ -574,7 +574,7 @@ static void acpi_tb_validate_fadt(void)
if (fadt_info_table[i].type & ACPI_FADT_REQUIRED) {
/*
- * Field is required (Pm1a_event, Pm1a_control, pm_timer).
+ * Field is required (Pm1a_event, Pm1a_control).
* Both the address and length must be non-zero.
*/
if (!address64->address || !length) {
diff --git a/drivers/acpi/acpica/tbxfroot.c b/drivers/acpi/acpica/tbxfroot.c
index 7c2ecfb7c2c3..948c95e80d44 100644
--- a/drivers/acpi/acpica/tbxfroot.c
+++ b/drivers/acpi/acpica/tbxfroot.c
@@ -48,11 +48,6 @@
#define _COMPONENT ACPI_TABLES
ACPI_MODULE_NAME("tbxfroot")
-/* Local prototypes */
-static u8 *acpi_tb_scan_memory_for_rsdp(u8 * start_address, u32 length);
-
-static acpi_status acpi_tb_validate_rsdp(struct acpi_table_rsdp *rsdp);
-
/*******************************************************************************
*
* FUNCTION: acpi_tb_validate_rsdp
@@ -64,8 +59,7 @@ static acpi_status acpi_tb_validate_rsdp(struct acpi_table_rsdp *rsdp);
* DESCRIPTION: Validate the RSDP (ptr)
*
******************************************************************************/
-
-static acpi_status acpi_tb_validate_rsdp(struct acpi_table_rsdp *rsdp)
+acpi_status acpi_tb_validate_rsdp(struct acpi_table_rsdp *rsdp)
{
/*
@@ -74,7 +68,7 @@ static acpi_status acpi_tb_validate_rsdp(struct acpi_table_rsdp *rsdp)
* Note: Sometimes there exists more than one RSDP in memory; the valid
* RSDP has a valid checksum, all others have an invalid checksum.
*/
- if (ACPI_STRNCMP((char *)rsdp, ACPI_SIG_RSDP,
+ if (ACPI_STRNCMP((char *)rsdp->signature, ACPI_SIG_RSDP,
sizeof(ACPI_SIG_RSDP) - 1) != 0) {
/* Nope, BAD Signature */
@@ -231,7 +225,7 @@ acpi_status acpi_find_root_pointer(acpi_size *table_address)
* DESCRIPTION: Search a block of memory for the RSDP signature
*
******************************************************************************/
-static u8 *acpi_tb_scan_memory_for_rsdp(u8 * start_address, u32 length)
+u8 *acpi_tb_scan_memory_for_rsdp(u8 *start_address, u32 length)
{
acpi_status status;
u8 *mem_rover;
diff --git a/drivers/acpi/acpica/uteval.c b/drivers/acpi/acpica/uteval.c
index ee83adb97b1e..4fd68971019b 100644
--- a/drivers/acpi/acpica/uteval.c
+++ b/drivers/acpi/acpica/uteval.c
@@ -239,7 +239,8 @@ acpi_ut_evaluate_numeric_object(char *object_name,
* RETURN: Status
*
* DESCRIPTION: Executes _STA for selected device and stores results in
- * *Flags.
+ * *Flags. If _STA does not exist, then the device is assumed
+ * to be present/functional/enabled (as per the ACPI spec).
*
* NOTE: Internal function, no parameter validation
*
@@ -257,6 +258,11 @@ acpi_ut_execute_STA(struct acpi_namespace_node *device_node, u32 * flags)
ACPI_BTYPE_INTEGER, &obj_desc);
if (ACPI_FAILURE(status)) {
if (AE_NOT_FOUND == status) {
+ /*
+ * if _STA does not exist, then (as per the ACPI specification),
+ * the returned flags will indicate that the device is present,
+ * functional, and enabled.
+ */
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"_STA on %4.4s was not found, assuming device is present\n",
acpi_ut_get_node_name(device_node)));
diff --git a/drivers/acpi/acpica/utglobal.c b/drivers/acpi/acpica/utglobal.c
index f736448a8606..d6f26bf8a062 100644
--- a/drivers/acpi/acpica/utglobal.c
+++ b/drivers/acpi/acpica/utglobal.c
@@ -336,7 +336,6 @@ acpi_status acpi_ut_init_globals(void)
acpi_gbl_trace_dbg_layer = 0;
acpi_gbl_debugger_configuration = DEBUGGER_THREADING;
acpi_gbl_db_output_flags = ACPI_DB_CONSOLE_OUTPUT;
- acpi_gbl_osi_data = 0;
acpi_gbl_osi_mutex = NULL;
acpi_gbl_reg_methods_executed = FALSE;
diff --git a/drivers/acpi/acpica/utosi.c b/drivers/acpi/acpica/utosi.c
index 7e807725c636..8856bd37bc76 100644
--- a/drivers/acpi/acpica/utosi.c
+++ b/drivers/acpi/acpica/utosi.c
@@ -77,21 +77,20 @@ static struct acpi_interface_info acpi_default_supported_interfaces[] = {
/* Feature Group Strings */
- {"Extended Address Space Descriptor", NULL, 0, 0}
+ {"Extended Address Space Descriptor", NULL, ACPI_OSI_FEATURE, 0},
/*
* All "optional" feature group strings (features that are implemented
- * by the host) should be dynamically added by the host via
- * acpi_install_interface and should not be manually added here.
- *
- * Examples of optional feature group strings:
- *
- * "Module Device"
- * "Processor Device"
- * "3.0 Thermal Model"
- * "3.0 _SCP Extensions"
- * "Processor Aggregator Device"
+ * by the host) should be dynamically modified to VALID by the host via
+ * acpi_install_interface or acpi_update_interfaces. Such optional feature
+ * group strings are set as INVALID by default here.
*/
+
+ {"Module Device", NULL, ACPI_OSI_OPTIONAL_FEATURE, 0},
+ {"Processor Device", NULL, ACPI_OSI_OPTIONAL_FEATURE, 0},
+ {"3.0 Thermal Model", NULL, ACPI_OSI_OPTIONAL_FEATURE, 0},
+ {"3.0 _SCP Extensions", NULL, ACPI_OSI_OPTIONAL_FEATURE, 0},
+ {"Processor Aggregator Device", NULL, ACPI_OSI_OPTIONAL_FEATURE, 0}
};
/*******************************************************************************
@@ -158,11 +157,20 @@ acpi_status acpi_ut_interface_terminate(void)
while (next_interface) {
acpi_gbl_supported_interfaces = next_interface->next;
- /* Only interfaces added at runtime can be freed */
-
if (next_interface->flags & ACPI_OSI_DYNAMIC) {
+
+ /* Only interfaces added at runtime can be freed */
+
ACPI_FREE(next_interface->name);
ACPI_FREE(next_interface);
+ } else {
+ /* Interface is in static list. Reset it to invalid or valid. */
+
+ if (next_interface->flags & ACPI_OSI_DEFAULT_INVALID) {
+ next_interface->flags |= ACPI_OSI_INVALID;
+ } else {
+ next_interface->flags &= ~ACPI_OSI_INVALID;
+ }
}
next_interface = acpi_gbl_supported_interfaces;
@@ -278,6 +286,49 @@ acpi_status acpi_ut_remove_interface(acpi_string interface_name)
/*******************************************************************************
*
+ * FUNCTION: acpi_ut_update_interfaces
+ *
+ * PARAMETERS: action - Actions to be performed during the
+ * update
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Update _OSI interface strings, disabling or enabling OS vendor
+ * strings or/and feature group strings.
+ * Caller MUST hold acpi_gbl_osi_mutex
+ *
+ ******************************************************************************/
+
+acpi_status acpi_ut_update_interfaces(u8 action)
+{
+ struct acpi_interface_info *next_interface;
+
+ next_interface = acpi_gbl_supported_interfaces;
+ while (next_interface) {
+ if (((next_interface->flags & ACPI_OSI_FEATURE) &&
+ (action & ACPI_FEATURE_STRINGS)) ||
+ (!(next_interface->flags & ACPI_OSI_FEATURE) &&
+ (action & ACPI_VENDOR_STRINGS))) {
+ if (action & ACPI_DISABLE_INTERFACES) {
+
+ /* Mark the interfaces as invalid */
+
+ next_interface->flags |= ACPI_OSI_INVALID;
+ } else {
+ /* Mark the interfaces as valid */
+
+ next_interface->flags &= ~ACPI_OSI_INVALID;
+ }
+ }
+
+ next_interface = next_interface->next;
+ }
+
+ return (AE_OK);
+}
+
+/*******************************************************************************
+ *
* FUNCTION: acpi_ut_get_interface
*
* PARAMETERS: interface_name - The interface to find
diff --git a/drivers/acpi/acpica/utstring.c b/drivers/acpi/acpica/utstring.c
index c53759b76a3f..cb1e9cc32d5f 100644
--- a/drivers/acpi/acpica/utstring.c
+++ b/drivers/acpi/acpica/utstring.c
@@ -333,7 +333,8 @@ acpi_status acpi_ut_strtoul64(char *string, u32 base, u64 *ret_integer)
* FUNCTION: acpi_ut_print_string
*
* PARAMETERS: string - Null terminated ASCII string
- * max_length - Maximum output length
+ * max_length - Maximum output length. Used to constrain the
+ * length of strings during debug output only.
*
* RETURN: None
*
@@ -342,7 +343,7 @@ acpi_status acpi_ut_strtoul64(char *string, u32 base, u64 *ret_integer)
*
******************************************************************************/
-void acpi_ut_print_string(char *string, u8 max_length)
+void acpi_ut_print_string(char *string, u16 max_length)
{
u32 i;
diff --git a/drivers/acpi/acpica/utxface.c b/drivers/acpi/acpica/utxface.c
index 6505774f223e..03a211e6e26a 100644
--- a/drivers/acpi/acpica/utxface.c
+++ b/drivers/acpi/acpica/utxface.c
@@ -389,6 +389,34 @@ ACPI_EXPORT_SYMBOL(acpi_install_interface_handler)
/*****************************************************************************
*
+ * FUNCTION: acpi_update_interfaces
+ *
+ * PARAMETERS: action - Actions to be performed during the
+ * update
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Update _OSI interface strings, disabling or enabling OS vendor
+ * string or/and feature group strings.
+ *
+ ****************************************************************************/
+acpi_status acpi_update_interfaces(u8 action)
+{
+ acpi_status status;
+
+ status = acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER);
+ if (ACPI_FAILURE(status)) {
+ return (status);
+ }
+
+ status = acpi_ut_update_interfaces(action);
+
+ acpi_os_release_mutex(acpi_gbl_osi_mutex);
+ return (status);
+}
+
+/*****************************************************************************
+ *
* FUNCTION: acpi_check_address_range
*
* PARAMETERS: space_id - Address space ID
@@ -402,6 +430,7 @@ ACPI_EXPORT_SYMBOL(acpi_install_interface_handler)
* ASL operation region address ranges.
*
****************************************************************************/
+
u32
acpi_check_address_range(acpi_adr_space_type space_id,
acpi_physical_address address,
diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index d405fbad406a..2c9958cd7a43 100644
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -527,18 +527,14 @@ static int acpi_battery_get_state(struct acpi_battery *battery)
static int acpi_battery_set_alarm(struct acpi_battery *battery)
{
acpi_status status = 0;
- union acpi_object arg0 = { .type = ACPI_TYPE_INTEGER };
- struct acpi_object_list arg_list = { 1, &arg0 };
if (!acpi_battery_present(battery) ||
!test_bit(ACPI_BATTERY_ALARM_PRESENT, &battery->flags))
return -ENODEV;
- arg0.integer.value = battery->alarm;
-
mutex_lock(&battery->lock);
- status = acpi_evaluate_object(battery->device->handle, "_BTP",
- &arg_list, NULL);
+ status = acpi_execute_simple_method(battery->device->handle, "_BTP",
+ battery->alarm);
mutex_unlock(&battery->lock);
if (ACPI_FAILURE(status))
@@ -550,12 +546,8 @@ static int acpi_battery_set_alarm(struct acpi_battery *battery)
static int acpi_battery_init_alarm(struct acpi_battery *battery)
{
- acpi_status status = AE_OK;
- acpi_handle handle = NULL;
-
/* See if alarms are supported, and if so, set default */
- status = acpi_get_handle(battery->device->handle, "_BTP", &handle);
- if (ACPI_FAILURE(status)) {
+ if (!acpi_has_method(battery->device->handle, "_BTP")) {
clear_bit(ACPI_BATTERY_ALARM_PRESENT, &battery->flags);
return 0;
}
@@ -1036,8 +1028,6 @@ static void acpi_battery_notify(struct acpi_device *device, u32 event)
if (event == ACPI_BATTERY_NOTIFY_INFO)
acpi_battery_refresh(battery);
acpi_battery_update(battery);
- acpi_bus_generate_proc_event(device, event,
- acpi_battery_present(battery));
acpi_bus_generate_netlink_event(device->pnp.device_class,
dev_name(&device->dev), event,
acpi_battery_present(battery));
@@ -1068,7 +1058,7 @@ static int acpi_battery_add(struct acpi_device *device)
{
int result = 0;
struct acpi_battery *battery = NULL;
- acpi_handle handle;
+
if (!device)
return -EINVAL;
battery = kzalloc(sizeof(struct acpi_battery), GFP_KERNEL);
@@ -1080,8 +1070,7 @@ static int acpi_battery_add(struct acpi_device *device)
device->driver_data = battery;
mutex_init(&battery->lock);
mutex_init(&battery->sysfs_lock);
- if (ACPI_SUCCESS(acpi_get_handle(battery->device->handle,
- "_BIX", &handle)))
+ if (acpi_has_method(battery->device->handle, "_BIX"))
set_bit(ACPI_BATTERY_XINFO_PRESENT, &battery->flags);
result = acpi_battery_update(battery);
if (result)
diff --git a/drivers/acpi/blacklist.c b/drivers/acpi/blacklist.c
index cb9629638def..9515f18898b2 100644
--- a/drivers/acpi/blacklist.c
+++ b/drivers/acpi/blacklist.c
@@ -192,6 +192,12 @@ static int __init dmi_disable_osi_win7(const struct dmi_system_id *d)
acpi_osi_setup("!Windows 2009");
return 0;
}
+static int __init dmi_disable_osi_win8(const struct dmi_system_id *d)
+{
+ printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident);
+ acpi_osi_setup("!Windows 2012");
+ return 0;
+}
static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
{
@@ -267,6 +273,30 @@ static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
DMI_MATCH(DMI_PRODUCT_NAME, "Satellite P305D"),
},
},
+ {
+ .callback = dmi_disable_osi_win8,
+ .ident = "ASUS Zenbook Prime UX31A",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "UX31A"),
+ },
+ },
+ {
+ .callback = dmi_disable_osi_win8,
+ .ident = "Dell Inspiron 15R SE",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7520"),
+ },
+ },
+ {
+ .callback = dmi_disable_osi_win8,
+ .ident = "Lenovo ThinkPad Edge E530",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+ DMI_MATCH(DMI_PRODUCT_VERSION, "3259A2G"),
+ },
+ },
/*
* BIOS invocation of _OSI(Linux) is almost always a BIOS bug.
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index a5bb33bab448..b587ec8257b2 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -89,27 +89,6 @@ static struct dmi_system_id dsdt_dmi_table[] __initdata = {
Device Management
-------------------------------------------------------------------------- */
-int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device)
-{
- acpi_status status;
-
- if (!device)
- return -EINVAL;
-
- /* TBD: Support fixed-feature devices */
-
- status = acpi_get_data(handle, acpi_bus_data_handler, (void **)device);
- if (ACPI_FAILURE(status) || !*device) {
- ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No context for object [%p]\n",
- handle));
- return -ENODEV;
- }
-
- return 0;
-}
-
-EXPORT_SYMBOL(acpi_bus_get_device);
-
acpi_status acpi_bus_get_status_handle(acpi_handle handle,
unsigned long long *sta)
{
@@ -346,104 +325,6 @@ static void acpi_bus_osc_support(void)
}
/* --------------------------------------------------------------------------
- Event Management
- -------------------------------------------------------------------------- */
-
-#ifdef CONFIG_ACPI_PROC_EVENT
-static DEFINE_SPINLOCK(acpi_bus_event_lock);
-
-LIST_HEAD(acpi_bus_event_list);
-DECLARE_WAIT_QUEUE_HEAD(acpi_bus_event_queue);
-
-extern int event_is_open;
-
-int acpi_bus_generate_proc_event4(const char *device_class, const char *bus_id, u8 type, int data)
-{
- struct acpi_bus_event *event;
- unsigned long flags;
-
- /* drop event on the floor if no one's listening */
- if (!event_is_open)
- return 0;
-
- event = kzalloc(sizeof(struct acpi_bus_event), GFP_ATOMIC);
- if (!event)
- return -ENOMEM;
-
- strcpy(event->device_class, device_class);
- strcpy(event->bus_id, bus_id);
- event->type = type;
- event->data = data;
-
- spin_lock_irqsave(&acpi_bus_event_lock, flags);
- list_add_tail(&event->node, &acpi_bus_event_list);
- spin_unlock_irqrestore(&acpi_bus_event_lock, flags);
-
- wake_up_interruptible(&acpi_bus_event_queue);
-
- return 0;
-
-}
-
-EXPORT_SYMBOL_GPL(acpi_bus_generate_proc_event4);
-
-int acpi_bus_generate_proc_event(struct acpi_device *device, u8 type, int data)
-{
- if (!device)
- return -EINVAL;
- return acpi_bus_generate_proc_event4(device->pnp.device_class,
- device->pnp.bus_id, type, data);
-}
-
-EXPORT_SYMBOL(acpi_bus_generate_proc_event);
-
-int acpi_bus_receive_event(struct acpi_bus_event *event)
-{
- unsigned long flags;
- struct acpi_bus_event *entry = NULL;
-
- DECLARE_WAITQUEUE(wait, current);
-
-
- if (!event)
- return -EINVAL;
-
- if (list_empty(&acpi_bus_event_list)) {
-
- set_current_state(TASK_INTERRUPTIBLE);
- add_wait_queue(&acpi_bus_event_queue, &wait);
-
- if (list_empty(&acpi_bus_event_list))
- schedule();
-
- remove_wait_queue(&acpi_bus_event_queue, &wait);
- set_current_state(TASK_RUNNING);
-
- if (signal_pending(current))
- return -ERESTARTSYS;
- }
-
- spin_lock_irqsave(&acpi_bus_event_lock, flags);
- if (!list_empty(&acpi_bus_event_list)) {
- entry = list_entry(acpi_bus_event_list.next,
- struct acpi_bus_event, node);
- list_del(&entry->node);
- }
- spin_unlock_irqrestore(&acpi_bus_event_lock, flags);
-
- if (!entry)
- return -ENODEV;
-
- memcpy(event, entry, sizeof(struct acpi_bus_event));
-
- kfree(entry);
-
- return 0;
-}
-
-#endif /* CONFIG_ACPI_PROC_EVENT */
-
-/* --------------------------------------------------------------------------
Notification Handling
-------------------------------------------------------------------------- */
@@ -499,19 +380,6 @@ static void acpi_bus_check_scope(acpi_handle handle)
*/
}
-static BLOCKING_NOTIFIER_HEAD(acpi_bus_notify_list);
-int register_acpi_bus_notifier(struct notifier_block *nb)
-{
- return blocking_notifier_chain_register(&acpi_bus_notify_list, nb);
-}
-EXPORT_SYMBOL_GPL(register_acpi_bus_notifier);
-
-void unregister_acpi_bus_notifier(struct notifier_block *nb)
-{
- blocking_notifier_chain_unregister(&acpi_bus_notify_list, nb);
-}
-EXPORT_SYMBOL_GPL(unregister_acpi_bus_notifier);
-
/**
* acpi_bus_notify
* ---------------
@@ -525,9 +393,6 @@ static void acpi_bus_notify(acpi_handle handle, u32 type, void *data)
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Notification %#02x to handle %p\n",
type, handle));
- blocking_notifier_call_chain(&acpi_bus_notify_list,
- type, (void *)handle);
-
switch (type) {
case ACPI_NOTIFY_BUS_CHECK:
@@ -593,8 +458,6 @@ static void acpi_bus_notify(acpi_handle handle, u32 type, void *data)
static int __init acpi_bus_init_irq(void)
{
acpi_status status;
- union acpi_object arg = { ACPI_TYPE_INTEGER };
- struct acpi_object_list arg_list = { 1, &arg };
char *message = NULL;
@@ -623,9 +486,7 @@ static int __init acpi_bus_init_irq(void)
printk(KERN_INFO PREFIX "Using %s for interrupt routing\n", message);
- arg.integer.value = acpi_irq_model;
-
- status = acpi_evaluate_object(NULL, "\\_PIC", &arg_list, NULL);
+ status = acpi_execute_simple_method(NULL, "\\_PIC", acpi_irq_model);
if (ACPI_FAILURE(status) && (status != AE_NOT_FOUND)) {
ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PIC"));
return -ENODEV;
@@ -715,7 +576,6 @@ static int __init acpi_bus_init(void)
{
int result;
acpi_status status;
- extern acpi_status acpi_os_initialize1(void);
acpi_os_initialize1();
diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c
index d2e617b5b3f6..a55773801c5f 100644
--- a/drivers/acpi/button.c
+++ b/drivers/acpi/button.c
@@ -303,8 +303,6 @@ static void acpi_button_notify(struct acpi_device *device, u32 event)
pm_wakeup_event(&device->dev, 0);
}
-
- acpi_bus_generate_proc_event(device, event, ++button->pushed);
break;
default:
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
diff --git a/drivers/acpi/device_pm.c b/drivers/acpi/device_pm.c
index 4ab807dc8518..59d3202f6b36 100644
--- a/drivers/acpi/device_pm.c
+++ b/drivers/acpi/device_pm.c
@@ -159,26 +159,29 @@ int acpi_device_set_power(struct acpi_device *device, int state)
int result = 0;
bool cut_power = false;
- if (!device || (state < ACPI_STATE_D0) || (state > ACPI_STATE_D3_COLD))
+ if (!device || !device->flags.power_manageable
+ || (state < ACPI_STATE_D0) || (state > ACPI_STATE_D3_COLD))
return -EINVAL;
/* Make sure this is a valid target state */
if (state == device->power.state) {
- ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device is already at %s\n",
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device [%s] already in %s\n",
+ device->pnp.bus_id,
acpi_power_state_string(state)));
return 0;
}
if (!device->power.states[state].flags.valid) {
- printk(KERN_WARNING PREFIX "Device does not support %s\n",
- acpi_power_state_string(state));
+ dev_warn(&device->dev, "Power state %s not supported\n",
+ acpi_power_state_string(state));
return -ENODEV;
}
if (device->parent && (state < device->parent->power.state)) {
- printk(KERN_WARNING PREFIX
- "Cannot set device to a higher-powered"
- " state than parent\n");
+ dev_warn(&device->dev,
+ "Cannot transition to power state %s for parent in %s\n",
+ acpi_power_state_string(state),
+ acpi_power_state_string(device->parent->power.state));
return -ENODEV;
}
@@ -191,8 +194,8 @@ int acpi_device_set_power(struct acpi_device *device, int state)
if (state < device->power.state && state != ACPI_STATE_D0
&& device->power.state >= ACPI_STATE_D3_HOT) {
- printk(KERN_WARNING PREFIX
- "Cannot transition to non-D0 state from D3\n");
+ dev_warn(&device->dev,
+ "Cannot transition to non-D0 state from D3\n");
return -ENODEV;
}
@@ -219,10 +222,8 @@ int acpi_device_set_power(struct acpi_device *device, int state)
end:
if (result) {
- printk(KERN_WARNING PREFIX
- "Device [%s] failed to transition to %s\n",
- device->pnp.bus_id,
- acpi_power_state_string(state));
+ dev_warn(&device->dev, "Failed to change power state to %s\n",
+ acpi_power_state_string(state));
} else {
device->power.state = state;
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
@@ -244,13 +245,6 @@ int acpi_bus_set_power(acpi_handle handle, int state)
if (result)
return result;
- if (!device->flags.power_manageable) {
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Device [%s] is not power manageable\n",
- dev_name(&device->dev)));
- return -ENODEV;
- }
-
return acpi_device_set_power(device, state);
}
EXPORT_SYMBOL(acpi_bus_set_power);
diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c
index 826560753389..05ea4be01a83 100644
--- a/drivers/acpi/dock.c
+++ b/drivers/acpi/dock.c
@@ -51,8 +51,6 @@ MODULE_PARM_DESC(immediate_undock, "1 (default) will cause the driver to "
" the driver to wait for userspace to write the undock sysfs file "
" before undocking");
-static struct atomic_notifier_head dock_notifier_list;
-
static const struct acpi_device_id dock_device_ids[] = {
{"LNXDOCK", 0},
{"", 0},
@@ -63,8 +61,6 @@ struct dock_station {
acpi_handle handle;
unsigned long last_dock_time;
u32 flags;
- spinlock_t dd_lock;
- struct mutex hp_lock;
struct list_head dependent_devices;
struct list_head sibling;
@@ -91,6 +87,12 @@ struct dock_dependent_device {
#define DOCK_EVENT 3
#define UNDOCK_EVENT 2
+enum dock_callback_type {
+ DOCK_CALL_HANDLER,
+ DOCK_CALL_FIXUP,
+ DOCK_CALL_UEVENT,
+};
+
/*****************************************************************************
* Dock Dependent device functions *
*****************************************************************************/
@@ -101,7 +103,7 @@ struct dock_dependent_device {
*
* Add the dependent device to the dock's dependent device list.
*/
-static int
+static int __init
add_dock_dependent_device(struct dock_station *ds, acpi_handle handle)
{
struct dock_dependent_device *dd;
@@ -112,14 +114,21 @@ add_dock_dependent_device(struct dock_station *ds, acpi_handle handle)
dd->handle = handle;
INIT_LIST_HEAD(&dd->list);
-
- spin_lock(&ds->dd_lock);
list_add_tail(&dd->list, &ds->dependent_devices);
- spin_unlock(&ds->dd_lock);
return 0;
}
+static void remove_dock_dependent_devices(struct dock_station *ds)
+{
+ struct dock_dependent_device *dd, *aux;
+
+ list_for_each_entry_safe(dd, aux, &ds->dependent_devices, list) {
+ list_del(&dd->list);
+ kfree(dd);
+ }
+}
+
/**
* dock_init_hotplug - Initialize a hotplug device on a docking station.
* @dd: Dock-dependent device.
@@ -135,19 +144,16 @@ static int dock_init_hotplug(struct dock_dependent_device *dd,
int ret = 0;
mutex_lock(&hotplug_lock);
-
- if (dd->hp_context) {
+ if (WARN_ON(dd->hp_context)) {
ret = -EEXIST;
} else {
dd->hp_refcount = 1;
dd->hp_ops = ops;
dd->hp_context = context;
dd->hp_release = release;
+ if (init)
+ init(context);
}
-
- if (!WARN_ON(ret) && init)
- init(context);
-
mutex_unlock(&hotplug_lock);
return ret;
}
@@ -162,27 +168,22 @@ static int dock_init_hotplug(struct dock_dependent_device *dd,
*/
static void dock_release_hotplug(struct dock_dependent_device *dd)
{
- void (*release)(void *) = NULL;
- void *context = NULL;
-
mutex_lock(&hotplug_lock);
-
if (dd->hp_context && !--dd->hp_refcount) {
+ void (*release)(void *) = dd->hp_release;
+ void *context = dd->hp_context;
+
dd->hp_ops = NULL;
- context = dd->hp_context;
dd->hp_context = NULL;
- release = dd->hp_release;
dd->hp_release = NULL;
+ if (release)
+ release(context);
}
-
- if (release && context)
- release(context);
-
mutex_unlock(&hotplug_lock);
}
static void dock_hotplug_event(struct dock_dependent_device *dd, u32 event,
- bool uevent)
+ enum dock_callback_type cb_type)
{
acpi_notify_handler cb = NULL;
bool run = false;
@@ -192,8 +193,18 @@ static void dock_hotplug_event(struct dock_dependent_device *dd, u32 event,
if (dd->hp_context) {
run = true;
dd->hp_refcount++;
- if (dd->hp_ops)
- cb = uevent ? dd->hp_ops->uevent : dd->hp_ops->handler;
+ if (dd->hp_ops) {
+ switch (cb_type) {
+ case DOCK_CALL_FIXUP:
+ cb = dd->hp_ops->fixup;
+ break;
+ case DOCK_CALL_UEVENT:
+ cb = dd->hp_ops->uevent;
+ break;
+ default:
+ cb = dd->hp_ops->handler;
+ }
+ }
}
mutex_unlock(&hotplug_lock);
@@ -220,63 +231,17 @@ find_dock_dependent_device(struct dock_station *ds, acpi_handle handle)
{
struct dock_dependent_device *dd;
- spin_lock(&ds->dd_lock);
- list_for_each_entry(dd, &ds->dependent_devices, list) {
- if (handle == dd->handle) {
- spin_unlock(&ds->dd_lock);
+ list_for_each_entry(dd, &ds->dependent_devices, list)
+ if (handle == dd->handle)
return dd;
- }
- }
- spin_unlock(&ds->dd_lock);
+
return NULL;
}
/*****************************************************************************
* Dock functions *
*****************************************************************************/
-/**
- * is_dock - see if a device is a dock station
- * @handle: acpi handle of the device
- *
- * If an acpi object has a _DCK method, then it is by definition a dock
- * station, so return true.
- */
-static int is_dock(acpi_handle handle)
-{
- acpi_status status;
- acpi_handle tmp;
-
- status = acpi_get_handle(handle, "_DCK", &tmp);
- if (ACPI_FAILURE(status))
- return 0;
- return 1;
-}
-
-static int is_ejectable(acpi_handle handle)
-{
- acpi_status status;
- acpi_handle tmp;
-
- status = acpi_get_handle(handle, "_EJ0", &tmp);
- if (ACPI_FAILURE(status))
- return 0;
- return 1;
-}
-
-static int is_ata(acpi_handle handle)
-{
- acpi_handle tmp;
-
- if ((ACPI_SUCCESS(acpi_get_handle(handle, "_GTF", &tmp))) ||
- (ACPI_SUCCESS(acpi_get_handle(handle, "_GTM", &tmp))) ||
- (ACPI_SUCCESS(acpi_get_handle(handle, "_STM", &tmp))) ||
- (ACPI_SUCCESS(acpi_get_handle(handle, "_SDD", &tmp))))
- return 1;
-
- return 0;
-}
-
-static int is_battery(acpi_handle handle)
+static int __init is_battery(acpi_handle handle)
{
struct acpi_device_info *info;
int ret = 1;
@@ -292,17 +257,13 @@ static int is_battery(acpi_handle handle)
return ret;
}
-static int is_ejectable_bay(acpi_handle handle)
+/* Check whether ACPI object is an ejectable battery or disk bay */
+static bool __init is_ejectable_bay(acpi_handle handle)
{
- acpi_handle phandle;
+ if (acpi_has_method(handle, "_EJ0") && is_battery(handle))
+ return true;
- if (!is_ejectable(handle))
- return 0;
- if (is_battery(handle) || is_ata(handle))
- return 1;
- if (!acpi_get_parent(handle, &phandle) && is_ata(phandle))
- return 1;
- return 0;
+ return acpi_bay_match(handle);
}
/**
@@ -320,7 +281,7 @@ int is_dock_device(acpi_handle handle)
if (!dock_station_count)
return 0;
- if (is_dock(handle))
+ if (acpi_dock_match(handle))
return 1;
list_for_each_entry(dock_station, &dock_stations, sibling)
@@ -359,10 +320,8 @@ static int dock_present(struct dock_station *ds)
* handle if one does not exist already. This should cause
* acpi to scan for drivers for the given devices, and call
* matching driver's add routine.
- *
- * Returns a pointer to the acpi_device corresponding to the handle.
*/
-static struct acpi_device * dock_create_acpi_device(acpi_handle handle)
+static void dock_create_acpi_device(acpi_handle handle)
{
struct acpi_device *device;
int ret;
@@ -375,10 +334,7 @@ static struct acpi_device * dock_create_acpi_device(acpi_handle handle)
ret = acpi_bus_scan(handle);
if (ret)
pr_debug("error adding bus, %x\n", -ret);
-
- acpi_bus_get_device(handle, &device);
}
- return device;
}
/**
@@ -397,9 +353,29 @@ static void dock_remove_acpi_device(acpi_handle handle)
}
/**
- * hotplug_dock_devices - insert or remove devices on the dock station
+ * hot_remove_dock_devices - Remove dock station devices.
+ * @ds: Dock station.
+ */
+static void hot_remove_dock_devices(struct dock_station *ds)
+{
+ struct dock_dependent_device *dd;
+
+ /*
+ * Walk the list in reverse order so that devices that have been added
+ * last are removed first (in case there are some indirect dependencies
+ * between them).
+ */
+ list_for_each_entry_reverse(dd, &ds->dependent_devices, list)
+ dock_hotplug_event(dd, ACPI_NOTIFY_EJECT_REQUEST, false);
+
+ list_for_each_entry_reverse(dd, &ds->dependent_devices, list)
+ dock_remove_acpi_device(dd->handle);
+}
+
+/**
+ * hotplug_dock_devices - Insert devices on a dock station.
* @ds: the dock station
- * @event: either bus check or eject request
+ * @event: either bus check or device check request
*
* Some devices on the dock station need to have drivers called
* to perform hotplug operations after a dock event has occurred.
@@ -410,27 +386,21 @@ static void hotplug_dock_devices(struct dock_station *ds, u32 event)
{
struct dock_dependent_device *dd;
- mutex_lock(&ds->hp_lock);
+ /* Call driver specific post-dock fixups. */
+ list_for_each_entry(dd, &ds->dependent_devices, list)
+ dock_hotplug_event(dd, event, DOCK_CALL_FIXUP);
- /*
- * First call driver specific hotplug functions
- */
+ /* Call driver specific hotplug functions. */
list_for_each_entry(dd, &ds->dependent_devices, list)
- dock_hotplug_event(dd, event, false);
+ dock_hotplug_event(dd, event, DOCK_CALL_HANDLER);
/*
- * Now make sure that an acpi_device is created for each
- * dependent device, or removed if this is an eject request.
- * This will cause acpi_drivers to be stopped/started if they
- * exist
+ * Now make sure that an acpi_device is created for each dependent
+ * device. That will cause scan handlers to be attached to device
+ * objects or acpi_drivers to be stopped/started if they are present.
*/
- list_for_each_entry(dd, &ds->dependent_devices, list) {
- if (event == ACPI_NOTIFY_EJECT_REQUEST)
- dock_remove_acpi_device(dd->handle);
- else
- dock_create_acpi_device(dd->handle);
- }
- mutex_unlock(&ds->hp_lock);
+ list_for_each_entry(dd, &ds->dependent_devices, list)
+ dock_create_acpi_device(dd->handle);
}
static void dock_event(struct dock_station *ds, u32 event, int num)
@@ -453,44 +423,13 @@ static void dock_event(struct dock_station *ds, u32 event, int num)
kobject_uevent_env(&dev->kobj, KOBJ_CHANGE, envp);
list_for_each_entry(dd, &ds->dependent_devices, list)
- dock_hotplug_event(dd, event, true);
+ dock_hotplug_event(dd, event, DOCK_CALL_UEVENT);
if (num != DOCK_EVENT)
kobject_uevent_env(&dev->kobj, KOBJ_CHANGE, envp);
}
/**
- * eject_dock - respond to a dock eject request
- * @ds: the dock station
- *
- * This is called after _DCK is called, to execute the dock station's
- * _EJ0 method.
- */
-static void eject_dock(struct dock_station *ds)
-{
- struct acpi_object_list arg_list;
- union acpi_object arg;
- acpi_status status;
- acpi_handle tmp;
-
- /* all dock devices should have _EJ0, but check anyway */
- status = acpi_get_handle(ds->handle, "_EJ0", &tmp);
- if (ACPI_FAILURE(status)) {
- pr_debug("No _EJ0 support for dock device\n");
- return;
- }
-
- arg_list.count = 1;
- arg_list.pointer = &arg;
- arg.type = ACPI_TYPE_INTEGER;
- arg.integer.value = 1;
-
- status = acpi_evaluate_object(ds->handle, "_EJ0", &arg_list, NULL);
- if (ACPI_FAILURE(status))
- pr_debug("Failed to evaluate _EJ0!\n");
-}
-
-/**
* handle_dock - handle a dock event
* @ds: the dock station
* @dock: to dock, or undock - that is the question
@@ -550,27 +489,6 @@ static inline void complete_undock(struct dock_station *ds)
ds->flags &= ~(DOCK_UNDOCKING);
}
-static void dock_lock(struct dock_station *ds, int lock)
-{
- struct acpi_object_list arg_list;
- union acpi_object arg;
- acpi_status status;
-
- arg_list.count = 1;
- arg_list.pointer = &arg;
- arg.type = ACPI_TYPE_INTEGER;
- arg.integer.value = !!lock;
- status = acpi_evaluate_object(ds->handle, "_LCK", &arg_list, NULL);
- if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
- if (lock)
- acpi_handle_warn(ds->handle,
- "Locking device failed (0x%x)\n", status);
- else
- acpi_handle_warn(ds->handle,
- "Unlocking device failed (0x%x)\n", status);
- }
-}
-
/**
* dock_in_progress - see if we are in the middle of handling a dock event
* @ds: the dock station
@@ -588,37 +506,6 @@ static int dock_in_progress(struct dock_station *ds)
}
/**
- * register_dock_notifier - add yourself to the dock notifier list
- * @nb: the callers notifier block
- *
- * If a driver wishes to be notified about dock events, they can
- * use this function to put a notifier block on the dock notifier list.
- * this notifier call chain will be called after a dock event, but
- * before hotplugging any new devices.
- */
-int register_dock_notifier(struct notifier_block *nb)
-{
- if (!dock_station_count)
- return -ENODEV;
-
- return atomic_notifier_chain_register(&dock_notifier_list, nb);
-}
-EXPORT_SYMBOL_GPL(register_dock_notifier);
-
-/**
- * unregister_dock_notifier - remove yourself from the dock notifier list
- * @nb: the callers notifier block
- */
-void unregister_dock_notifier(struct notifier_block *nb)
-{
- if (!dock_station_count)
- return;
-
- atomic_notifier_chain_unregister(&dock_notifier_list, nb);
-}
-EXPORT_SYMBOL_GPL(unregister_dock_notifier);
-
-/**
* register_hotplug_dock_device - register a hotplug function
* @handle: the handle of the device
* @ops: handlers to call after docking
@@ -703,10 +590,10 @@ static int handle_eject_request(struct dock_station *ds, u32 event)
*/
dock_event(ds, event, UNDOCK_EVENT);
- hotplug_dock_devices(ds, ACPI_NOTIFY_EJECT_REQUEST);
+ hot_remove_dock_devices(ds);
undock(ds);
- dock_lock(ds, 0);
- eject_dock(ds);
+ acpi_evaluate_lck(ds->handle, 0);
+ acpi_evaluate_ej0(ds->handle);
if (dock_present(ds)) {
acpi_handle_err(ds->handle, "Unable to undock!\n");
return -EBUSY;
@@ -717,18 +604,17 @@ static int handle_eject_request(struct dock_station *ds, u32 event)
/**
* dock_notify - act upon an acpi dock notification
- * @handle: the dock station handle
+ * @ds: dock station
* @event: the acpi event
- * @data: our driver data struct
*
* If we are notified to dock, then check to see if the dock is
* present and then dock. Notify all drivers of the dock event,
* and then hotplug and devices that may need hotplugging.
*/
-static void dock_notify(acpi_handle handle, u32 event, void *data)
+static void dock_notify(struct dock_station *ds, u32 event)
{
- struct dock_station *ds = data;
- struct acpi_device *tmp;
+ acpi_handle handle = ds->handle;
+ struct acpi_device *ad;
int surprise_removal = 0;
/*
@@ -751,8 +637,7 @@ static void dock_notify(acpi_handle handle, u32 event, void *data)
switch (event) {
case ACPI_NOTIFY_BUS_CHECK:
case ACPI_NOTIFY_DEVICE_CHECK:
- if (!dock_in_progress(ds) && acpi_bus_get_device(ds->handle,
- &tmp)) {
+ if (!dock_in_progress(ds) && acpi_bus_get_device(handle, &ad)) {
begin_dock(ds);
dock(ds);
if (!dock_present(ds)) {
@@ -760,12 +645,10 @@ static void dock_notify(acpi_handle handle, u32 event, void *data)
complete_dock(ds);
break;
}
- atomic_notifier_call_chain(&dock_notifier_list,
- event, NULL);
hotplug_dock_devices(ds, event);
complete_dock(ds);
dock_event(ds, event, DOCK_EVENT);
- dock_lock(ds, 1);
+ acpi_evaluate_lck(ds->handle, 1);
acpi_update_all_gpes();
break;
}
@@ -789,9 +672,8 @@ static void dock_notify(acpi_handle handle, u32 event, void *data)
}
struct dock_data {
- acpi_handle handle;
- unsigned long event;
struct dock_station *ds;
+ u32 event;
};
static void acpi_dock_deferred_cb(void *context)
@@ -799,52 +681,31 @@ static void acpi_dock_deferred_cb(void *context)
struct dock_data *data = context;
acpi_scan_lock_acquire();
- dock_notify(data->handle, data->event, data->ds);
+ dock_notify(data->ds, data->event);
acpi_scan_lock_release();
kfree(data);
}
-static int acpi_dock_notifier_call(struct notifier_block *this,
- unsigned long event, void *data)
+static void dock_notify_handler(acpi_handle handle, u32 event, void *data)
{
- struct dock_station *dock_station;
- acpi_handle handle = data;
+ struct dock_data *dd;
if (event != ACPI_NOTIFY_BUS_CHECK && event != ACPI_NOTIFY_DEVICE_CHECK
&& event != ACPI_NOTIFY_EJECT_REQUEST)
- return 0;
-
- acpi_scan_lock_acquire();
-
- list_for_each_entry(dock_station, &dock_stations, sibling) {
- if (dock_station->handle == handle) {
- struct dock_data *dd;
- acpi_status status;
-
- dd = kmalloc(sizeof(*dd), GFP_KERNEL);
- if (!dd)
- break;
+ return;
- dd->handle = handle;
- dd->event = event;
- dd->ds = dock_station;
- status = acpi_os_hotplug_execute(acpi_dock_deferred_cb,
- dd);
- if (ACPI_FAILURE(status))
- kfree(dd);
+ dd = kmalloc(sizeof(*dd), GFP_KERNEL);
+ if (dd) {
+ acpi_status status;
- break;
- }
+ dd->ds = data;
+ dd->event = event;
+ status = acpi_os_hotplug_execute(acpi_dock_deferred_cb, dd);
+ if (ACPI_FAILURE(status))
+ kfree(dd);
}
-
- acpi_scan_lock_release();
- return 0;
}
-static struct notifier_block dock_acpi_notifier = {
- .notifier_call = acpi_dock_notifier_call,
-};
-
/**
* find_dock_devices - find devices on the dock station
* @handle: the handle of the device we are examining
@@ -856,29 +717,16 @@ static struct notifier_block dock_acpi_notifier = {
* check to see if an object has an _EJD method. If it does, then it
* will see if it is dependent on the dock station.
*/
-static acpi_status
-find_dock_devices(acpi_handle handle, u32 lvl, void *context, void **rv)
+static acpi_status __init find_dock_devices(acpi_handle handle, u32 lvl,
+ void *context, void **rv)
{
- acpi_status status;
- acpi_handle tmp, parent;
struct dock_station *ds = context;
+ acpi_handle ejd = NULL;
- status = acpi_bus_get_ejd(handle, &tmp);
- if (ACPI_FAILURE(status)) {
- /* try the parent device as well */
- status = acpi_get_parent(handle, &parent);
- if (ACPI_FAILURE(status))
- goto fdd_out;
- /* see if parent is dependent on dock */
- status = acpi_bus_get_ejd(parent, &tmp);
- if (ACPI_FAILURE(status))
- goto fdd_out;
- }
-
- if (tmp == ds->handle)
+ acpi_bus_get_ejd(handle, &ejd);
+ if (ejd == ds->handle)
add_dock_dependent_device(ds, handle);
-fdd_out:
return AE_OK;
}
@@ -988,13 +836,13 @@ static struct attribute_group dock_attribute_group = {
*/
static int __init dock_add(acpi_handle handle)
{
- int ret, id;
- struct dock_station ds, *dock_station;
+ struct dock_station *dock_station, ds = { NULL, };
struct platform_device *dd;
+ acpi_status status;
+ int ret;
- id = dock_station_count;
- memset(&ds, 0, sizeof(ds));
- dd = platform_device_register_data(NULL, "dock", id, &ds, sizeof(ds));
+ dd = platform_device_register_data(NULL, "dock", dock_station_count,
+ &ds, sizeof(ds));
if (IS_ERR(dd))
return PTR_ERR(dd);
@@ -1004,18 +852,15 @@ static int __init dock_add(acpi_handle handle)
dock_station->dock_device = dd;
dock_station->last_dock_time = jiffies - HZ;
- mutex_init(&dock_station->hp_lock);
- spin_lock_init(&dock_station->dd_lock);
INIT_LIST_HEAD(&dock_station->sibling);
- ATOMIC_INIT_NOTIFIER_HEAD(&dock_notifier_list);
INIT_LIST_HEAD(&dock_station->dependent_devices);
/* we want the dock device to send uevents */
dev_set_uevent_suppress(&dd->dev, 0);
- if (is_dock(handle))
+ if (acpi_dock_match(handle))
dock_station->flags |= DOCK_IS_DOCK;
- if (is_ata(handle))
+ if (acpi_ata_match(handle))
dock_station->flags |= DOCK_IS_ATA;
if (is_battery(handle))
dock_station->flags |= DOCK_IS_BAT;
@@ -1034,11 +879,19 @@ static int __init dock_add(acpi_handle handle)
if (ret)
goto err_rmgroup;
+ status = acpi_install_notify_handler(handle, ACPI_SYSTEM_NOTIFY,
+ dock_notify_handler, dock_station);
+ if (ACPI_FAILURE(status)) {
+ ret = -ENODEV;
+ goto err_rmgroup;
+ }
+
dock_station_count++;
list_add(&dock_station->sibling, &dock_stations);
return 0;
err_rmgroup:
+ remove_dock_dependent_devices(dock_station);
sysfs_remove_group(&dd->dev.kobj, &dock_attribute_group);
err_unregister:
platform_device_unregister(dd);
@@ -1055,10 +908,10 @@ err_unregister:
*
* This is called by acpi_walk_namespace to look for dock stations and bays.
*/
-static __init acpi_status
+static acpi_status __init
find_dock_and_bay(acpi_handle handle, u32 lvl, void *context, void **rv)
{
- if (is_dock(handle) || is_ejectable_bay(handle))
+ if (acpi_dock_match(handle) || is_ejectable_bay(handle))
dock_add(handle);
return AE_OK;
@@ -1078,7 +931,6 @@ void __init acpi_dock_init(void)
return;
}
- register_acpi_bus_notifier(&dock_acpi_notifier);
pr_info(PREFIX "%s: %d docks/bays found\n",
ACPI_DOCK_DRIVER_DESCRIPTION, dock_station_count);
}
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 80403c1a89f8..a06d98374705 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -948,7 +948,7 @@ static int ec_enlarge_storm_threshold(const struct dmi_system_id *id)
return 0;
}
-static struct dmi_system_id __initdata ec_dmi_table[] = {
+static struct dmi_system_id ec_dmi_table[] __initdata = {
{
ec_skip_dsdt_scan, "Compal JFL92", {
DMI_MATCH(DMI_BIOS_VENDOR, "COMPAL"),
@@ -987,6 +987,10 @@ static struct dmi_system_id __initdata ec_dmi_table[] = {
ec_skip_dsdt_scan, "HP Folio 13", {
DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
DMI_MATCH(DMI_PRODUCT_NAME, "HP Folio 13"),}, NULL},
+ {
+ ec_validate_ecdt, "ASUS hardware", {
+ DMI_MATCH(DMI_SYS_VENDOR, "ASUSTek Computer Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "L4R"),}, NULL},
{},
};
@@ -1049,10 +1053,8 @@ int __init acpi_ec_ecdt_probe(void)
* which needs it, has fake EC._INI method, so use it as flag.
* Keep boot_ec struct as it will be needed soon.
*/
- acpi_handle dummy;
if (!dmi_name_in_vendors("ASUS") ||
- ACPI_FAILURE(acpi_get_handle(boot_ec->handle, "_INI",
- &dummy)))
+ !acpi_has_method(boot_ec->handle, "_INI"))
return -ENODEV;
}
install:
diff --git a/drivers/acpi/event.c b/drivers/acpi/event.c
index 1442737cedec..8247fcdde079 100644
--- a/drivers/acpi/event.c
+++ b/drivers/acpi/event.c
@@ -21,100 +21,6 @@
#define _COMPONENT ACPI_SYSTEM_COMPONENT
ACPI_MODULE_NAME("event");
-#ifdef CONFIG_ACPI_PROC_EVENT
-/* Global vars for handling event proc entry */
-static DEFINE_SPINLOCK(acpi_system_event_lock);
-int event_is_open = 0;
-extern struct list_head acpi_bus_event_list;
-extern wait_queue_head_t acpi_bus_event_queue;
-
-static int acpi_system_open_event(struct inode *inode, struct file *file)
-{
- spin_lock_irq(&acpi_system_event_lock);
-
- if (event_is_open)
- goto out_busy;
-
- event_is_open = 1;
-
- spin_unlock_irq(&acpi_system_event_lock);
- return 0;
-
- out_busy:
- spin_unlock_irq(&acpi_system_event_lock);
- return -EBUSY;
-}
-
-static ssize_t
-acpi_system_read_event(struct file *file, char __user * buffer, size_t count,
- loff_t * ppos)
-{
- int result = 0;
- struct acpi_bus_event event;
- static char str[ACPI_MAX_STRING];
- static int chars_remaining = 0;
- static char *ptr;
-
- if (!chars_remaining) {
- memset(&event, 0, sizeof(struct acpi_bus_event));
-
- if ((file->f_flags & O_NONBLOCK)
- && (list_empty(&acpi_bus_event_list)))
- return -EAGAIN;
-
- result = acpi_bus_receive_event(&event);
- if (result)
- return result;
-
- chars_remaining = sprintf(str, "%s %s %08x %08x\n",
- event.device_class ? event.
- device_class : "<unknown>",
- event.bus_id ? event.
- bus_id : "<unknown>", event.type,
- event.data);
- ptr = str;
- }
-
- if (chars_remaining < count) {
- count = chars_remaining;
- }
-
- if (copy_to_user(buffer, ptr, count))
- return -EFAULT;
-
- *ppos += count;
- chars_remaining -= count;
- ptr += count;
-
- return count;
-}
-
-static int acpi_system_close_event(struct inode *inode, struct file *file)
-{
- spin_lock_irq(&acpi_system_event_lock);
- event_is_open = 0;
- spin_unlock_irq(&acpi_system_event_lock);
- return 0;
-}
-
-static unsigned int acpi_system_poll_event(struct file *file, poll_table * wait)
-{
- poll_wait(file, &acpi_bus_event_queue, wait);
- if (!list_empty(&acpi_bus_event_list))
- return POLLIN | POLLRDNORM;
- return 0;
-}
-
-static const struct file_operations acpi_system_event_ops = {
- .owner = THIS_MODULE,
- .open = acpi_system_open_event,
- .read = acpi_system_read_event,
- .release = acpi_system_close_event,
- .poll = acpi_system_poll_event,
- .llseek = default_llseek,
-};
-#endif /* CONFIG_ACPI_PROC_EVENT */
-
/* ACPI notifier chain */
static BLOCKING_NOTIFIER_HEAD(acpi_chain_head);
@@ -280,9 +186,6 @@ static int acpi_event_genetlink_init(void)
static int __init acpi_event_init(void)
{
-#ifdef CONFIG_ACPI_PROC_EVENT
- struct proc_dir_entry *entry;
-#endif
int error = 0;
if (acpi_disabled)
@@ -293,15 +196,6 @@ static int __init acpi_event_init(void)
if (error)
printk(KERN_WARNING PREFIX
"Failed to create genetlink family for ACPI event\n");
-
-#ifdef CONFIG_ACPI_PROC_EVENT
- /* 'event' [R] */
- entry = proc_create("event", S_IRUSR, acpi_root_dir,
- &acpi_system_event_ops);
- if (!entry)
- return -ENODEV;
-#endif
-
return 0;
}
diff --git a/drivers/acpi/fan.c b/drivers/acpi/fan.c
index 5b02a0aa540c..41ade6570bc0 100644
--- a/drivers/acpi/fan.c
+++ b/drivers/acpi/fan.c
@@ -93,7 +93,7 @@ static int fan_get_cur_state(struct thermal_cooling_device *cdev, unsigned long
if (result)
return result;
- *state = (acpi_state == ACPI_STATE_D3 ? 0 :
+ *state = (acpi_state == ACPI_STATE_D3_COLD ? 0 :
(acpi_state == ACPI_STATE_D0 ? 1 : -1));
return 0;
}
@@ -108,7 +108,7 @@ fan_set_cur_state(struct thermal_cooling_device *cdev, unsigned long state)
return -EINVAL;
result = acpi_bus_set_power(device->handle,
- state ? ACPI_STATE_D0 : ACPI_STATE_D3);
+ state ? ACPI_STATE_D0 : ACPI_STATE_D3_COLD);
return result;
}
diff --git a/drivers/acpi/glue.c b/drivers/acpi/glue.c
index 408f6b2a5fa8..94672297e1b1 100644
--- a/drivers/acpi/glue.c
+++ b/drivers/acpi/glue.c
@@ -173,6 +173,15 @@ acpi_handle acpi_find_child(acpi_handle parent, u64 addr, bool is_bridge)
}
EXPORT_SYMBOL_GPL(acpi_find_child);
+static void acpi_physnode_link_name(char *buf, unsigned int node_id)
+{
+ if (node_id > 0)
+ snprintf(buf, PHYSICAL_NODE_NAME_SIZE,
+ PHYSICAL_NODE_STRING "%u", node_id);
+ else
+ strcpy(buf, PHYSICAL_NODE_STRING);
+}
+
int acpi_bind_one(struct device *dev, acpi_handle handle)
{
struct acpi_device *acpi_dev;
@@ -216,8 +225,15 @@ int acpi_bind_one(struct device *dev, acpi_handle handle)
list_for_each_entry(pn, &acpi_dev->physical_node_list, node) {
/* Sanity check. */
if (pn->dev == dev) {
+ mutex_unlock(&acpi_dev->physical_node_lock);
+
dev_warn(dev, "Already associated with ACPI node\n");
- goto err_free;
+ kfree(physical_node);
+ if (ACPI_HANDLE(dev) != handle)
+ goto err;
+
+ put_device(dev);
+ return 0;
}
if (pn->node_id == node_id) {
physnode_list = &pn->node;
@@ -230,20 +246,23 @@ int acpi_bind_one(struct device *dev, acpi_handle handle)
list_add(&physical_node->node, physnode_list);
acpi_dev->physical_node_count++;
- mutex_unlock(&acpi_dev->physical_node_lock);
-
if (!ACPI_HANDLE(dev))
ACPI_HANDLE_SET(dev, acpi_dev->handle);
- if (!physical_node->node_id)
- strcpy(physical_node_name, PHYSICAL_NODE_STRING);
- else
- sprintf(physical_node_name,
- "physical_node%d", physical_node->node_id);
+ acpi_physnode_link_name(physical_node_name, node_id);
retval = sysfs_create_link(&acpi_dev->dev.kobj, &dev->kobj,
- physical_node_name);
+ physical_node_name);
+ if (retval)
+ dev_err(&acpi_dev->dev, "Failed to create link %s (%d)\n",
+ physical_node_name, retval);
+
retval = sysfs_create_link(&dev->kobj, &acpi_dev->dev.kobj,
- "firmware_node");
+ "firmware_node");
+ if (retval)
+ dev_err(dev, "Failed to create link firmware_node (%d)\n",
+ retval);
+
+ mutex_unlock(&acpi_dev->physical_node_lock);
if (acpi_dev->wakeup.flags.valid)
device_set_wakeup_capable(dev, true);
@@ -254,11 +273,6 @@ int acpi_bind_one(struct device *dev, acpi_handle handle)
ACPI_HANDLE_SET(dev, NULL);
put_device(dev);
return retval;
-
- err_free:
- mutex_unlock(&acpi_dev->physical_node_lock);
- kfree(physical_node);
- goto err;
}
EXPORT_SYMBOL_GPL(acpi_bind_one);
@@ -267,48 +281,37 @@ int acpi_unbind_one(struct device *dev)
struct acpi_device_physical_node *entry;
struct acpi_device *acpi_dev;
acpi_status status;
- struct list_head *node, *next;
if (!ACPI_HANDLE(dev))
return 0;
status = acpi_bus_get_device(ACPI_HANDLE(dev), &acpi_dev);
- if (ACPI_FAILURE(status))
- goto err;
+ if (ACPI_FAILURE(status)) {
+ dev_err(dev, "Oops, ACPI handle corrupt in %s()\n", __func__);
+ return -EINVAL;
+ }
mutex_lock(&acpi_dev->physical_node_lock);
- list_for_each_safe(node, next, &acpi_dev->physical_node_list) {
- char physical_node_name[PHYSICAL_NODE_NAME_SIZE];
- entry = list_entry(node, struct acpi_device_physical_node,
- node);
- if (entry->dev != dev)
- continue;
+ list_for_each_entry(entry, &acpi_dev->physical_node_list, node)
+ if (entry->dev == dev) {
+ char physnode_name[PHYSICAL_NODE_NAME_SIZE];
- list_del(node);
+ list_del(&entry->node);
+ acpi_dev->physical_node_count--;
- acpi_dev->physical_node_count--;
+ acpi_physnode_link_name(physnode_name, entry->node_id);
+ sysfs_remove_link(&acpi_dev->dev.kobj, physnode_name);
+ sysfs_remove_link(&dev->kobj, "firmware_node");
+ ACPI_HANDLE_SET(dev, NULL);
+ /* acpi_bind_one() increase refcnt by one. */
+ put_device(dev);
+ kfree(entry);
+ break;
+ }
- if (!entry->node_id)
- strcpy(physical_node_name, PHYSICAL_NODE_STRING);
- else
- sprintf(physical_node_name,
- "physical_node%d", entry->node_id);
-
- sysfs_remove_link(&acpi_dev->dev.kobj, physical_node_name);
- sysfs_remove_link(&dev->kobj, "firmware_node");
- ACPI_HANDLE_SET(dev, NULL);
- /* acpi_bind_one increase refcnt by one */
- put_device(dev);
- kfree(entry);
- }
mutex_unlock(&acpi_dev->physical_node_lock);
-
return 0;
-
-err:
- dev_err(dev, "Oops, 'acpi_handle' corrupt\n");
- return -EINVAL;
}
EXPORT_SYMBOL_GPL(acpi_unbind_one);
diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h
index 5da44e81dd4d..20f423337e1f 100644
--- a/drivers/acpi/internal.h
+++ b/drivers/acpi/internal.h
@@ -23,6 +23,7 @@
#define PREFIX "ACPI: "
+acpi_status acpi_os_initialize1(void);
int init_acpi_device_notify(void);
int acpi_scan_init(void);
#ifdef CONFIG_ACPI_PCI_SLOT
diff --git a/drivers/acpi/numa.c b/drivers/acpi/numa.c
index 33e609f63585..2e82e5d76930 100644
--- a/drivers/acpi/numa.c
+++ b/drivers/acpi/numa.c
@@ -159,7 +159,7 @@ acpi_table_print_srat_entry(struct acpi_subtable_header *header)
* distance than the others.
* Do some quick checks here and only use the SLIT if it passes.
*/
-static __init int slit_valid(struct acpi_table_slit *slit)
+static int __init slit_valid(struct acpi_table_slit *slit)
{
int i, j;
int d = slit->locality_count;
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index 6ab2c3505520..e5f416c7f66e 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -52,6 +52,7 @@
#include <acpi/acpi.h>
#include <acpi/acpi_bus.h>
#include <acpi/processor.h>
+#include "internal.h"
#define _COMPONENT ACPI_OS_SERVICES
ACPI_MODULE_NAME("osl");
@@ -79,6 +80,8 @@ extern char line_buf[80];
static int (*__acpi_os_prepare_sleep)(u8 sleep_state, u32 pm1a_ctrl,
u32 pm1b_ctrl);
+static int (*__acpi_os_prepare_extended_sleep)(u8 sleep_state, u32 val_a,
+ u32 val_b);
static acpi_osd_handler acpi_irq_handler;
static void *acpi_irq_context;
@@ -140,7 +143,8 @@ static struct osi_linux {
unsigned int enable:1;
unsigned int dmi:1;
unsigned int cmdline:1;
-} osi_linux = {0, 0, 0};
+ unsigned int default_disabling:1;
+} osi_linux = {0, 0, 0, 0};
static u32 acpi_osi_handler(acpi_string interface, u32 supported)
{
@@ -563,10 +567,6 @@ static const char * const table_sigs[] = {
ACPI_SIG_WDRT, ACPI_SIG_DSDT, ACPI_SIG_FADT, ACPI_SIG_PSDT,
ACPI_SIG_RSDT, ACPI_SIG_XSDT, ACPI_SIG_SSDT, NULL };
-/* Non-fatal errors: Affected tables/files are ignored */
-#define INVALID_TABLE(x, path, name) \
- { pr_err("ACPI OVERRIDE: " x " [%s%s]\n", path, name); continue; }
-
#define ACPI_HEADER_SIZE sizeof(struct acpi_table_header)
/* Must not increase 10 or needs code modification below */
@@ -593,9 +593,11 @@ void __init acpi_initrd_override(void *data, size_t size)
data += offset;
size -= offset;
- if (file.size < sizeof(struct acpi_table_header))
- INVALID_TABLE("Table smaller than ACPI header",
- cpio_path, file.name);
+ if (file.size < sizeof(struct acpi_table_header)) {
+ pr_err("ACPI OVERRIDE: Table smaller than ACPI header [%s%s]\n",
+ cpio_path, file.name);
+ continue;
+ }
table = file.data;
@@ -603,15 +605,21 @@ void __init acpi_initrd_override(void *data, size_t size)
if (!memcmp(table->signature, table_sigs[sig], 4))
break;
- if (!table_sigs[sig])
- INVALID_TABLE("Unknown signature",
- cpio_path, file.name);
- if (file.size != table->length)
- INVALID_TABLE("File length does not match table length",
- cpio_path, file.name);
- if (acpi_table_checksum(file.data, table->length))
- INVALID_TABLE("Bad table checksum",
- cpio_path, file.name);
+ if (!table_sigs[sig]) {
+ pr_err("ACPI OVERRIDE: Unknown signature [%s%s]\n",
+ cpio_path, file.name);
+ continue;
+ }
+ if (file.size != table->length) {
+ pr_err("ACPI OVERRIDE: File length does not match table length [%s%s]\n",
+ cpio_path, file.name);
+ continue;
+ }
+ if (acpi_table_checksum(file.data, table->length)) {
+ pr_err("ACPI OVERRIDE: Bad table checksum [%s%s]\n",
+ cpio_path, file.name);
+ continue;
+ }
pr_info("%4.4s ACPI table found in initrd [%s%s][0x%x]\n",
table->signature, cpio_path, file.name, table->length);
@@ -1351,8 +1359,8 @@ struct osi_setup_entry {
bool enable;
};
-static struct osi_setup_entry __initdata
- osi_setup_entries[OSI_STRING_ENTRIES_MAX] = {
+static struct osi_setup_entry
+ osi_setup_entries[OSI_STRING_ENTRIES_MAX] __initdata = {
{"Module Device", true},
{"Processor Device", true},
{"3.0 _SCP Extensions", true},
@@ -1376,6 +1384,17 @@ void __init acpi_osi_setup(char *str)
if (*str == '!') {
str++;
+ if (*str == '\0') {
+ osi_linux.default_disabling = 1;
+ return;
+ } else if (*str == '*') {
+ acpi_update_interfaces(ACPI_DISABLE_ALL_STRINGS);
+ for (i = 0; i < OSI_STRING_ENTRIES_MAX; i++) {
+ osi = &osi_setup_entries[i];
+ osi->enable = false;
+ }
+ return;
+ }
enable = false;
}
@@ -1441,6 +1460,13 @@ static void __init acpi_osi_setup_late(void)
int i;
acpi_status status;
+ if (osi_linux.default_disabling) {
+ status = acpi_update_interfaces(ACPI_DISABLE_ALL_VENDOR_STRINGS);
+
+ if (ACPI_SUCCESS(status))
+ printk(KERN_INFO PREFIX "Disabled all _OSI OS vendors\n");
+ }
+
for (i = 0; i < OSI_STRING_ENTRIES_MAX; i++) {
osi = &osi_setup_entries[i];
str = osi->string;
@@ -1779,6 +1805,28 @@ void acpi_os_set_prepare_sleep(int (*func)(u8 sleep_state,
__acpi_os_prepare_sleep = func;
}
+acpi_status acpi_os_prepare_extended_sleep(u8 sleep_state, u32 val_a,
+ u32 val_b)
+{
+ int rc = 0;
+ if (__acpi_os_prepare_extended_sleep)
+ rc = __acpi_os_prepare_extended_sleep(sleep_state,
+ val_a, val_b);
+ if (rc < 0)
+ return AE_ERROR;
+ else if (rc > 0)
+ return AE_CTRL_SKIP;
+
+ return AE_OK;
+}
+
+void acpi_os_set_prepare_extended_sleep(int (*func)(u8 sleep_state,
+ u32 val_a, u32 val_b))
+{
+ __acpi_os_prepare_extended_sleep = func;
+}
+
+
void alloc_acpi_hp_work(acpi_handle handle, u32 type, void *context,
void (*func)(struct work_struct *work))
{
diff --git a/drivers/acpi/pci_slot.c b/drivers/acpi/pci_slot.c
index 033d1179bdb5..d678a180ca2a 100644
--- a/drivers/acpi/pci_slot.c
+++ b/drivers/acpi/pci_slot.c
@@ -159,12 +159,16 @@ register_slot(acpi_handle handle, u32 lvl, void *context, void **rv)
return AE_OK;
}
-void acpi_pci_slot_enumerate(struct pci_bus *bus, acpi_handle handle)
+void acpi_pci_slot_enumerate(struct pci_bus *bus)
{
- mutex_lock(&slot_list_lock);
- acpi_walk_namespace(ACPI_TYPE_DEVICE, handle, 1,
- register_slot, NULL, bus, NULL);
- mutex_unlock(&slot_list_lock);
+ acpi_handle handle = ACPI_HANDLE(bus->bridge);
+
+ if (handle) {
+ mutex_lock(&slot_list_lock);
+ acpi_walk_namespace(ACPI_TYPE_DEVICE, handle, 1,
+ register_slot, NULL, bus, NULL);
+ mutex_unlock(&slot_list_lock);
+ }
}
void acpi_pci_slot_remove(struct pci_bus *bus)
diff --git a/drivers/acpi/power.c b/drivers/acpi/power.c
index 5c28c894c0fc..0dbe5cdf3396 100644
--- a/drivers/acpi/power.c
+++ b/drivers/acpi/power.c
@@ -637,9 +637,7 @@ int acpi_device_sleep_wake(struct acpi_device *dev,
}
/* Execute _PSW */
- arg_list.count = 1;
- in_arg[0].integer.value = enable;
- status = acpi_evaluate_object(dev->handle, "_PSW", &arg_list, NULL);
+ status = acpi_execute_simple_method(dev->handle, "_PSW", enable);
if (ACPI_FAILURE(status) && (status != AE_NOT_FOUND)) {
printk(KERN_ERR PREFIX "_PSW execution failed\n");
dev->wakeup.flags.valid = 0;
@@ -786,7 +784,7 @@ int acpi_power_get_inferred_state(struct acpi_device *device, int *state)
}
}
- *state = ACPI_STATE_D3;
+ *state = ACPI_STATE_D3_COLD;
return 0;
}
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index a5e9f4a5b281..cf34d903f4fb 100644
--- a/drivers/acpi/processor_core.c
+++ b/drivers/acpi/processor_core.c
@@ -28,7 +28,7 @@ static int __init set_no_mwait(const struct dmi_system_id *id)
return 0;
}
-static struct dmi_system_id __initdata processor_idle_dmi_table[] = {
+static struct dmi_system_id processor_idle_dmi_table[] __initdata = {
{
set_no_mwait, "Extensa 5220", {
DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies LTD"),
diff --git a/drivers/acpi/processor_driver.c b/drivers/acpi/processor_driver.c
index 870eaf5fa547..e534ba66d5b8 100644
--- a/drivers/acpi/processor_driver.c
+++ b/drivers/acpi/processor_driver.c
@@ -91,21 +91,17 @@ static void acpi_processor_notify(acpi_handle handle, u32 event, void *data)
acpi_processor_ppc_has_changed(pr, 1);
if (saved == pr->performance_platform_limit)
break;
- acpi_bus_generate_proc_event(device, event,
- pr->performance_platform_limit);
acpi_bus_generate_netlink_event(device->pnp.device_class,
dev_name(&device->dev), event,
pr->performance_platform_limit);
break;
case ACPI_PROCESSOR_NOTIFY_POWER:
acpi_processor_cst_has_changed(pr);
- acpi_bus_generate_proc_event(device, event, 0);
acpi_bus_generate_netlink_event(device->pnp.device_class,
dev_name(&device->dev), event, 0);
break;
case ACPI_PROCESSOR_NOTIFY_THROTTLING:
acpi_processor_tstate_has_changed(pr);
- acpi_bus_generate_proc_event(device, event, 0);
acpi_bus_generate_netlink_event(device->pnp.device_class,
dev_name(&device->dev), event, 0);
break;
@@ -179,7 +175,9 @@ static int __acpi_processor_start(struct acpi_device *device)
acpi_processor_load_module(pr);
#endif
acpi_processor_get_throttling_info(pr);
- acpi_processor_get_limit_info(pr);
+
+ if (pr->flags.throttling)
+ pr->flags.limit = 1;
if (!cpuidle_get_driver() || cpuidle_get_driver() == &acpi_idle_driver)
acpi_processor_power_init(pr);
diff --git a/drivers/acpi/processor_perflib.c b/drivers/acpi/processor_perflib.c
index 1e9732d809bf..51d7948611da 100644
--- a/drivers/acpi/processor_perflib.c
+++ b/drivers/acpi/processor_perflib.c
@@ -164,17 +164,12 @@ static void acpi_processor_ppc_ost(acpi_handle handle, int status)
{.type = ACPI_TYPE_INTEGER,},
};
struct acpi_object_list arg_list = {2, params};
- acpi_handle temp;
- params[0].integer.value = ACPI_PROCESSOR_NOTIFY_PERFORMANCE;
- params[1].integer.value = status;
-
- /* when there is no _OST , skip it */
- if (ACPI_FAILURE(acpi_get_handle(handle, "_OST", &temp)))
- return;
-
- acpi_evaluate_object(handle, "_OST", &arg_list, NULL);
- return;
+ if (acpi_has_method(handle, "_OST")) {
+ params[0].integer.value = ACPI_PROCESSOR_NOTIFY_PERFORMANCE;
+ params[1].integer.value = status;
+ acpi_evaluate_object(handle, "_OST", &arg_list, NULL);
+ }
}
int acpi_processor_ppc_has_changed(struct acpi_processor *pr, int event_flag)
@@ -468,14 +463,11 @@ static int acpi_processor_get_performance_states(struct acpi_processor *pr)
int acpi_processor_get_performance_info(struct acpi_processor *pr)
{
int result = 0;
- acpi_status status = AE_OK;
- acpi_handle handle = NULL;
if (!pr || !pr->performance || !pr->handle)
return -EINVAL;
- status = acpi_get_handle(pr->handle, "_PCT", &handle);
- if (ACPI_FAILURE(status)) {
+ if (!acpi_has_method(pr->handle, "_PCT")) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"ACPI-based processor performance control unavailable\n"));
return -ENODEV;
@@ -501,7 +493,7 @@ int acpi_processor_get_performance_info(struct acpi_processor *pr)
*/
update_bios:
#ifdef CONFIG_X86
- if (ACPI_SUCCESS(acpi_get_handle(pr->handle, "_PPC", &handle))){
+ if (acpi_has_method(pr->handle, "_PPC")) {
if(boot_cpu_has(X86_FEATURE_EST))
printk(KERN_WARNING FW_BUG "BIOS needs update for CPU "
"frequency support\n");
diff --git a/drivers/acpi/processor_thermal.c b/drivers/acpi/processor_thermal.c
index e8e652710e65..d1d2e7fb5b30 100644
--- a/drivers/acpi/processor_thermal.c
+++ b/drivers/acpi/processor_thermal.c
@@ -186,18 +186,6 @@ static int cpufreq_set_cur_state(unsigned int cpu, int state)
#endif
-int acpi_processor_get_limit_info(struct acpi_processor *pr)
-{
-
- if (!pr)
- return -EINVAL;
-
- if (pr->flags.throttling)
- pr->flags.limit = 1;
-
- return 0;
-}
-
/* thermal coolign device callbacks */
static int acpi_processor_max_state(struct acpi_processor *pr)
{
diff --git a/drivers/acpi/resource.c b/drivers/acpi/resource.c
index 3322b47ab7ca..b7201fc6f1e1 100644
--- a/drivers/acpi/resource.c
+++ b/drivers/acpi/resource.c
@@ -505,14 +505,12 @@ int acpi_dev_get_resources(struct acpi_device *adev, struct list_head *list,
void *preproc_data)
{
struct res_proc_context c;
- acpi_handle not_used;
acpi_status status;
if (!adev || !adev->handle || !list_empty(list))
return -EINVAL;
- status = acpi_get_handle(adev->handle, METHOD_NAME__CRS, &not_used);
- if (ACPI_FAILURE(status))
+ if (!acpi_has_method(adev->handle, METHOD_NAME__CRS))
return 0;
c.list = list;
diff --git a/drivers/acpi/sbs.c b/drivers/acpi/sbs.c
index b6241eeb1132..aef7e1cd1e5d 100644
--- a/drivers/acpi/sbs.c
+++ b/drivers/acpi/sbs.c
@@ -873,14 +873,9 @@ static void acpi_sbs_callback(void *context)
u8 saved_charger_state = sbs->charger_present;
u8 saved_battery_state;
acpi_ac_get_present(sbs);
- if (sbs->charger_present != saved_charger_state) {
-#ifdef CONFIG_ACPI_PROC_EVENT
- acpi_bus_generate_proc_event4(ACPI_AC_CLASS, ACPI_AC_DIR_NAME,
- ACPI_SBS_NOTIFY_STATUS,
- sbs->charger_present);
-#endif
+ if (sbs->charger_present != saved_charger_state)
kobject_uevent(&sbs->charger.dev->kobj, KOBJ_CHANGE);
- }
+
if (sbs->manager_present) {
for (id = 0; id < MAX_SBS_BAT; ++id) {
if (!(sbs->batteries_supported & (1 << id)))
@@ -890,12 +885,6 @@ static void acpi_sbs_callback(void *context)
acpi_battery_read(bat);
if (saved_battery_state == bat->present)
continue;
-#ifdef CONFIG_ACPI_PROC_EVENT
- acpi_bus_generate_proc_event4(ACPI_BATTERY_CLASS,
- bat->name,
- ACPI_SBS_NOTIFY_STATUS,
- bat->present);
-#endif
kobject_uevent(&bat->bat.dev->kobj, KOBJ_CHANGE);
}
}
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 8a46c924effd..61d090b6ce25 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -193,9 +193,6 @@ static acpi_status acpi_bus_online_companions(acpi_handle handle, u32 lvl,
static int acpi_scan_hot_remove(struct acpi_device *device)
{
acpi_handle handle = device->handle;
- acpi_handle not_used;
- struct acpi_object_list arg_list;
- union acpi_object arg;
struct device *errdev;
acpi_status status;
unsigned long long sta;
@@ -258,32 +255,15 @@ static int acpi_scan_hot_remove(struct acpi_device *device)
put_device(&device->dev);
device = NULL;
- if (ACPI_SUCCESS(acpi_get_handle(handle, "_LCK", &not_used))) {
- arg_list.count = 1;
- arg_list.pointer = &arg;
- arg.type = ACPI_TYPE_INTEGER;
- arg.integer.value = 0;
- acpi_evaluate_object(handle, "_LCK", &arg_list, NULL);
- }
-
- arg_list.count = 1;
- arg_list.pointer = &arg;
- arg.type = ACPI_TYPE_INTEGER;
- arg.integer.value = 1;
-
+ acpi_evaluate_lck(handle, 0);
/*
* TBD: _EJD support.
*/
- status = acpi_evaluate_object(handle, "_EJ0", &arg_list, NULL);
- if (ACPI_FAILURE(status)) {
- if (status == AE_NOT_FOUND) {
- return -ENODEV;
- } else {
- acpi_handle_warn(handle, "Eject failed (0x%x)\n",
- status);
- return -EIO;
- }
- }
+ status = acpi_evaluate_ej0(handle);
+ if (status == AE_NOT_FOUND)
+ return -ENODEV;
+ else if (ACPI_FAILURE(status))
+ return -EIO;
/*
* Verify if eject was indeed successful. If not, log an error
@@ -307,6 +287,7 @@ static void acpi_bus_device_eject(void *context)
struct acpi_device *device = NULL;
struct acpi_scan_handler *handler;
u32 ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE;
+ int error;
mutex_lock(&acpi_scan_lock);
@@ -321,17 +302,13 @@ static void acpi_bus_device_eject(void *context)
}
acpi_evaluate_hotplug_ost(handle, ACPI_NOTIFY_EJECT_REQUEST,
ACPI_OST_SC_EJECT_IN_PROGRESS, NULL);
- if (handler->hotplug.mode == AHM_CONTAINER) {
- device->flags.eject_pending = true;
+ if (handler->hotplug.mode == AHM_CONTAINER)
kobject_uevent(&device->dev.kobj, KOBJ_OFFLINE);
- } else {
- int error;
- get_device(&device->dev);
- error = acpi_scan_hot_remove(device);
- if (error)
- goto err_out;
- }
+ get_device(&device->dev);
+ error = acpi_scan_hot_remove(device);
+ if (error)
+ goto err_out;
out:
mutex_unlock(&acpi_scan_lock);
@@ -516,7 +493,6 @@ acpi_eject_store(struct device *d, struct device_attribute *attr,
struct acpi_eject_event *ej_event;
acpi_object_type not_used;
acpi_status status;
- u32 ost_source;
int ret;
if (!count || buf[0] != '1')
@@ -530,43 +506,28 @@ acpi_eject_store(struct device *d, struct device_attribute *attr,
if (ACPI_FAILURE(status) || !acpi_device->flags.ejectable)
return -ENODEV;
- mutex_lock(&acpi_scan_lock);
-
- if (acpi_device->flags.eject_pending) {
- /* ACPI eject notification event. */
- ost_source = ACPI_NOTIFY_EJECT_REQUEST;
- acpi_device->flags.eject_pending = 0;
- } else {
- /* Eject initiated by user space. */
- ost_source = ACPI_OST_EC_OSPM_EJECT;
- }
ej_event = kmalloc(sizeof(*ej_event), GFP_KERNEL);
if (!ej_event) {
ret = -ENOMEM;
goto err_out;
}
- acpi_evaluate_hotplug_ost(acpi_device->handle, ost_source,
+ acpi_evaluate_hotplug_ost(acpi_device->handle, ACPI_OST_EC_OSPM_EJECT,
ACPI_OST_SC_EJECT_IN_PROGRESS, NULL);
ej_event->device = acpi_device;
- ej_event->event = ost_source;
+ ej_event->event = ACPI_OST_EC_OSPM_EJECT;
get_device(&acpi_device->dev);
status = acpi_os_hotplug_execute(acpi_bus_hot_remove_device, ej_event);
- if (ACPI_FAILURE(status)) {
- put_device(&acpi_device->dev);
- kfree(ej_event);
- ret = status == AE_NO_MEMORY ? -ENOMEM : -EAGAIN;
- goto err_out;
- }
- ret = count;
+ if (ACPI_SUCCESS(status))
+ return count;
- out:
- mutex_unlock(&acpi_scan_lock);
- return ret;
+ put_device(&acpi_device->dev);
+ kfree(ej_event);
+ ret = status == AE_NO_MEMORY ? -ENOMEM : -EAGAIN;
err_out:
- acpi_evaluate_hotplug_ost(acpi_device->handle, ost_source,
+ acpi_evaluate_hotplug_ost(acpi_device->handle, ACPI_OST_EC_OSPM_EJECT,
ACPI_OST_SC_NON_SPECIFIC_FAILURE, NULL);
- goto out;
+ return ret;
}
static DEVICE_ATTR(eject, 0200, NULL, acpi_eject_store);
@@ -654,7 +615,6 @@ static int acpi_device_setup_files(struct acpi_device *dev)
{
struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
acpi_status status;
- acpi_handle temp;
unsigned long long sun;
int result = 0;
@@ -680,8 +640,7 @@ static int acpi_device_setup_files(struct acpi_device *dev)
/*
* If device has _STR, 'description' file is created
*/
- status = acpi_get_handle(dev->handle, "_STR", &temp);
- if (ACPI_SUCCESS(status)) {
+ if (acpi_has_method(dev->handle, "_STR")) {
status = acpi_evaluate_object(dev->handle, "_STR",
NULL, &buffer);
if (ACPI_FAILURE(status))
@@ -711,8 +670,7 @@ static int acpi_device_setup_files(struct acpi_device *dev)
* If device has _EJ0, 'eject' file is created that is used to trigger
* hot-removal function from userland.
*/
- status = acpi_get_handle(dev->handle, "_EJ0", &temp);
- if (ACPI_SUCCESS(status)) {
+ if (acpi_has_method(dev->handle, "_EJ0")) {
result = device_create_file(&dev->dev, &dev_attr_eject);
if (result)
return result;
@@ -734,9 +692,6 @@ end:
static void acpi_device_remove_files(struct acpi_device *dev)
{
- acpi_status status;
- acpi_handle temp;
-
if (dev->flags.power_manageable) {
device_remove_file(&dev->dev, &dev_attr_power_state);
if (dev->power.flags.power_resources)
@@ -747,20 +702,17 @@ static void acpi_device_remove_files(struct acpi_device *dev)
/*
* If device has _STR, remove 'description' file
*/
- status = acpi_get_handle(dev->handle, "_STR", &temp);
- if (ACPI_SUCCESS(status)) {
+ if (acpi_has_method(dev->handle, "_STR")) {
kfree(dev->pnp.str_obj);
device_remove_file(&dev->dev, &dev_attr_description);
}
/*
* If device has _EJ0, remove 'eject' file.
*/
- status = acpi_get_handle(dev->handle, "_EJ0", &temp);
- if (ACPI_SUCCESS(status))
+ if (acpi_has_method(dev->handle, "_EJ0"))
device_remove_file(&dev->dev, &dev_attr_eject);
- status = acpi_get_handle(dev->handle, "_SUN", &temp);
- if (ACPI_SUCCESS(status))
+ if (acpi_has_method(dev->handle, "_SUN"))
device_remove_file(&dev->dev, &dev_attr_sun);
if (dev->pnp.unique_id)
@@ -999,6 +951,28 @@ struct bus_type acpi_bus_type = {
.uevent = acpi_device_uevent,
};
+static void acpi_bus_data_handler(acpi_handle handle, void *context)
+{
+ /* Intentionally empty. */
+}
+
+int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device)
+{
+ acpi_status status;
+
+ if (!device)
+ return -EINVAL;
+
+ status = acpi_get_data(handle, acpi_bus_data_handler, (void **)device);
+ if (ACPI_FAILURE(status) || !*device) {
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No context for object [%p]\n",
+ handle));
+ return -ENODEV;
+ }
+ return 0;
+}
+EXPORT_SYMBOL_GPL(acpi_bus_get_device);
+
int acpi_device_add(struct acpi_device *device,
void (*release)(struct device *))
{
@@ -1210,14 +1184,6 @@ acpi_bus_get_ejd(acpi_handle handle, acpi_handle *ejd)
}
EXPORT_SYMBOL_GPL(acpi_bus_get_ejd);
-void acpi_bus_data_handler(acpi_handle handle, void *context)
-{
-
- /* TBD */
-
- return;
-}
-
static int acpi_bus_extract_wakeup_device_power_package(acpi_handle handle,
struct acpi_device_wakeup *wakeup)
{
@@ -1336,13 +1302,10 @@ static void acpi_bus_set_run_wake_flags(struct acpi_device *device)
static void acpi_bus_get_wakeup_device_flags(struct acpi_device *device)
{
- acpi_handle temp;
- acpi_status status = 0;
int err;
/* Presence of _PRW indicates wake capable */
- status = acpi_get_handle(device->handle, "_PRW", &temp);
- if (ACPI_FAILURE(status))
+ if (!acpi_has_method(device->handle, "_PRW"))
return;
err = acpi_bus_extract_wakeup_device_power_package(device->handle,
@@ -1372,7 +1335,6 @@ static void acpi_bus_init_power_state(struct acpi_device *device, int state)
struct acpi_device_power_state *ps = &device->power.states[state];
char pathname[5] = { '_', 'P', 'R', '0' + state, '\0' };
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
- acpi_handle handle;
acpi_status status;
INIT_LIST_HEAD(&ps->resources);
@@ -1395,8 +1357,7 @@ static void acpi_bus_init_power_state(struct acpi_device *device, int state)
/* Evaluate "_PSx" to see if we can do explicit sets */
pathname[2] = 'S';
- status = acpi_get_handle(device->handle, pathname, &handle);
- if (ACPI_SUCCESS(status))
+ if (acpi_has_method(device->handle, pathname))
ps->flags.explicit_set = 1;
/*
@@ -1415,28 +1376,21 @@ static void acpi_bus_init_power_state(struct acpi_device *device, int state)
static void acpi_bus_get_power_flags(struct acpi_device *device)
{
- acpi_status status;
- acpi_handle handle;
u32 i;
/* Presence of _PS0|_PR0 indicates 'power manageable' */
- status = acpi_get_handle(device->handle, "_PS0", &handle);
- if (ACPI_FAILURE(status)) {
- status = acpi_get_handle(device->handle, "_PR0", &handle);
- if (ACPI_FAILURE(status))
- return;
- }
+ if (!acpi_has_method(device->handle, "_PS0") &&
+ !acpi_has_method(device->handle, "_PR0"))
+ return;
device->flags.power_manageable = 1;
/*
* Power Management Flags
*/
- status = acpi_get_handle(device->handle, "_PSC", &handle);
- if (ACPI_SUCCESS(status))
+ if (acpi_has_method(device->handle, "_PSC"))
device->power.flags.explicit_get = 1;
- status = acpi_get_handle(device->handle, "_IRC", &handle);
- if (ACPI_SUCCESS(status))
+ if (acpi_has_method(device->handle, "_IRC"))
device->power.flags.inrush_current = 1;
/*
@@ -1450,8 +1404,8 @@ static void acpi_bus_get_power_flags(struct acpi_device *device)
/* Set defaults for D0 and D3 states (always valid) */
device->power.states[ACPI_STATE_D0].flags.valid = 1;
device->power.states[ACPI_STATE_D0].power = 100;
- device->power.states[ACPI_STATE_D3].flags.valid = 1;
- device->power.states[ACPI_STATE_D3].power = 0;
+ device->power.states[ACPI_STATE_D3_COLD].flags.valid = 1;
+ device->power.states[ACPI_STATE_D3_COLD].power = 0;
/* Set D3cold's explicit_set flag if _PS3 exists. */
if (device->power.states[ACPI_STATE_D3_HOT].flags.explicit_set)
@@ -1470,28 +1424,18 @@ static void acpi_bus_get_power_flags(struct acpi_device *device)
static void acpi_bus_get_flags(struct acpi_device *device)
{
- acpi_status status = AE_OK;
- acpi_handle temp = NULL;
-
/* Presence of _STA indicates 'dynamic_status' */
- status = acpi_get_handle(device->handle, "_STA", &temp);
- if (ACPI_SUCCESS(status))
+ if (acpi_has_method(device->handle, "_STA"))
device->flags.dynamic_status = 1;
/* Presence of _RMV indicates 'removable' */
- status = acpi_get_handle(device->handle, "_RMV", &temp);
- if (ACPI_SUCCESS(status))
+ if (acpi_has_method(device->handle, "_RMV"))
device->flags.removable = 1;
/* Presence of _EJD|_EJ0 indicates 'ejectable' */
- status = acpi_get_handle(device->handle, "_EJD", &temp);
- if (ACPI_SUCCESS(status))
+ if (acpi_has_method(device->handle, "_EJD") ||
+ acpi_has_method(device->handle, "_EJ0"))
device->flags.ejectable = 1;
- else {
- status = acpi_get_handle(device->handle, "_EJ0", &temp);
- if (ACPI_SUCCESS(status))
- device->flags.ejectable = 1;
- }
}
static void acpi_device_get_busid(struct acpi_device *device)
@@ -1533,46 +1477,45 @@ static void acpi_device_get_busid(struct acpi_device *device)
}
/*
+ * acpi_ata_match - see if an acpi object is an ATA device
+ *
+ * If an acpi object has one of the ACPI ATA methods defined,
+ * then we can safely call it an ATA device.
+ */
+bool acpi_ata_match(acpi_handle handle)
+{
+ return acpi_has_method(handle, "_GTF") ||
+ acpi_has_method(handle, "_GTM") ||
+ acpi_has_method(handle, "_STM") ||
+ acpi_has_method(handle, "_SDD");
+}
+
+/*
* acpi_bay_match - see if an acpi object is an ejectable driver bay
*
* If an acpi object is ejectable and has one of the ACPI ATA methods defined,
* then we can safely call it an ejectable drive bay
*/
-static int acpi_bay_match(acpi_handle handle)
+bool acpi_bay_match(acpi_handle handle)
{
- acpi_status status;
- acpi_handle tmp;
acpi_handle phandle;
- status = acpi_get_handle(handle, "_EJ0", &tmp);
- if (ACPI_FAILURE(status))
- return -ENODEV;
-
- if ((ACPI_SUCCESS(acpi_get_handle(handle, "_GTF", &tmp))) ||
- (ACPI_SUCCESS(acpi_get_handle(handle, "_GTM", &tmp))) ||
- (ACPI_SUCCESS(acpi_get_handle(handle, "_STM", &tmp))) ||
- (ACPI_SUCCESS(acpi_get_handle(handle, "_SDD", &tmp))))
- return 0;
+ if (!acpi_has_method(handle, "_EJ0"))
+ return false;
+ if (acpi_ata_match(handle))
+ return true;
+ if (ACPI_FAILURE(acpi_get_parent(handle, &phandle)))
+ return false;
- if (acpi_get_parent(handle, &phandle))
- return -ENODEV;
-
- if ((ACPI_SUCCESS(acpi_get_handle(phandle, "_GTF", &tmp))) ||
- (ACPI_SUCCESS(acpi_get_handle(phandle, "_GTM", &tmp))) ||
- (ACPI_SUCCESS(acpi_get_handle(phandle, "_STM", &tmp))) ||
- (ACPI_SUCCESS(acpi_get_handle(phandle, "_SDD", &tmp))))
- return 0;
-
- return -ENODEV;
+ return acpi_ata_match(phandle);
}
/*
* acpi_dock_match - see if an acpi object has a _DCK method
*/
-static int acpi_dock_match(acpi_handle handle)
+bool acpi_dock_match(acpi_handle handle)
{
- acpi_handle tmp;
- return acpi_get_handle(handle, "_DCK", &tmp);
+ return acpi_has_method(handle, "_DCK");
}
const char *acpi_device_hid(struct acpi_device *device)
@@ -1610,34 +1553,26 @@ static void acpi_add_id(struct acpi_device_pnp *pnp, const char *dev_id)
* lacks the SMBUS01 HID and the methods do not have the necessary "_"
* prefix. Work around this.
*/
-static int acpi_ibm_smbus_match(acpi_handle handle)
+static bool acpi_ibm_smbus_match(acpi_handle handle)
{
- acpi_handle h_dummy;
- struct acpi_buffer path = {ACPI_ALLOCATE_BUFFER, NULL};
- int result;
+ char node_name[ACPI_PATH_SEGMENT_LENGTH];
+ struct acpi_buffer path = { sizeof(node_name), node_name };
if (!dmi_name_in_vendors("IBM"))
- return -ENODEV;
+ return false;
/* Look for SMBS object */
- result = acpi_get_name(handle, ACPI_SINGLE_NAME, &path);
- if (result)
- return result;
-
- if (strcmp("SMBS", path.pointer)) {
- result = -ENODEV;
- goto out;
- }
+ if (ACPI_FAILURE(acpi_get_name(handle, ACPI_SINGLE_NAME, &path)) ||
+ strcmp("SMBS", path.pointer))
+ return false;
/* Does it have the necessary (but misnamed) methods? */
- result = -ENODEV;
- if (ACPI_SUCCESS(acpi_get_handle(handle, "SBI", &h_dummy)) &&
- ACPI_SUCCESS(acpi_get_handle(handle, "SBR", &h_dummy)) &&
- ACPI_SUCCESS(acpi_get_handle(handle, "SBW", &h_dummy)))
- result = 0;
-out:
- kfree(path.pointer);
- return result;
+ if (acpi_has_method(handle, "SBI") &&
+ acpi_has_method(handle, "SBR") &&
+ acpi_has_method(handle, "SBW"))
+ return true;
+
+ return false;
}
static void acpi_set_pnp_ids(acpi_handle handle, struct acpi_device_pnp *pnp,
@@ -1685,11 +1620,11 @@ static void acpi_set_pnp_ids(acpi_handle handle, struct acpi_device_pnp *pnp,
*/
if (acpi_is_video_device(handle))
acpi_add_id(pnp, ACPI_VIDEO_HID);
- else if (ACPI_SUCCESS(acpi_bay_match(handle)))
+ else if (acpi_bay_match(handle))
acpi_add_id(pnp, ACPI_BAY_HID);
- else if (ACPI_SUCCESS(acpi_dock_match(handle)))
+ else if (acpi_dock_match(handle))
acpi_add_id(pnp, ACPI_DOCK_HID);
- else if (!acpi_ibm_smbus_match(handle))
+ else if (acpi_ibm_smbus_match(handle))
acpi_add_id(pnp, ACPI_SMBUS_IBM_HID);
else if (list_empty(&pnp->ids) && handle == ACPI_ROOT_OBJECT) {
acpi_add_id(pnp, ACPI_BUS_HID); /* \_SB, LNXSYBUS */
@@ -1900,7 +1835,6 @@ static acpi_status acpi_bus_check_add(acpi_handle handle, u32 lvl_not_used,
struct acpi_device *device = NULL;
int type;
unsigned long long sta;
- acpi_status status;
int result;
acpi_bus_get_device(handle, &device);
@@ -1921,10 +1855,8 @@ static acpi_status acpi_bus_check_add(acpi_handle handle, u32 lvl_not_used,
if (!(sta & ACPI_STA_DEVICE_PRESENT) &&
!(sta & ACPI_STA_DEVICE_FUNCTIONING)) {
struct acpi_device_wakeup wakeup;
- acpi_handle temp;
- status = acpi_get_handle(handle, "_PRW", &temp);
- if (ACPI_SUCCESS(status)) {
+ if (acpi_has_method(handle, "_PRW")) {
acpi_bus_extract_wakeup_device_power_package(handle,
&wakeup);
acpi_power_resources_list_free(&wakeup.resources);
diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index 187ab61889e6..14df30580e15 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -31,12 +31,9 @@ static u8 sleep_states[ACPI_S_STATE_COUNT];
static void acpi_sleep_tts_switch(u32 acpi_state)
{
- union acpi_object in_arg = { ACPI_TYPE_INTEGER };
- struct acpi_object_list arg_list = { 1, &in_arg };
- acpi_status status = AE_OK;
+ acpi_status status;
- in_arg.integer.value = acpi_state;
- status = acpi_evaluate_object(NULL, "\\_TTS", &arg_list, NULL);
+ status = acpi_execute_simple_method(NULL, "\\_TTS", acpi_state);
if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
/*
* OS can't evaluate the _TTS object correctly. Some warning
@@ -141,7 +138,7 @@ static int __init init_nvs_nosave(const struct dmi_system_id *d)
return 0;
}
-static struct dmi_system_id __initdata acpisleep_dmi_table[] = {
+static struct dmi_system_id acpisleep_dmi_table[] __initdata = {
{
.callback = init_old_suspend_ordering,
.ident = "Abit KN9 (nForce4 variant)",
@@ -423,10 +420,21 @@ static void acpi_pm_finish(void)
}
/**
- * acpi_pm_end - Finish up suspend sequence.
+ * acpi_pm_start - Start system PM transition.
+ */
+static void acpi_pm_start(u32 acpi_state)
+{
+ acpi_target_sleep_state = acpi_state;
+ acpi_sleep_tts_switch(acpi_target_sleep_state);
+ acpi_scan_lock_acquire();
+}
+
+/**
+ * acpi_pm_end - Finish up system PM transition.
*/
static void acpi_pm_end(void)
{
+ acpi_scan_lock_release();
/*
* This is necessary in case acpi_pm_finish() is not called during a
* failing transition to a sleep state.
@@ -454,21 +462,19 @@ static u32 acpi_suspend_states[] = {
static int acpi_suspend_begin(suspend_state_t pm_state)
{
u32 acpi_state = acpi_suspend_states[pm_state];
- int error = 0;
+ int error;
error = (nvs_nosave || nvs_nosave_s3) ? 0 : suspend_nvs_alloc();
if (error)
return error;
- if (sleep_states[acpi_state]) {
- acpi_target_sleep_state = acpi_state;
- acpi_sleep_tts_switch(acpi_target_sleep_state);
- } else {
- printk(KERN_ERR "ACPI does not support this state: %d\n",
- pm_state);
- error = -ENOSYS;
+ if (!sleep_states[acpi_state]) {
+ pr_err("ACPI does not support sleep state S%u\n", acpi_state);
+ return -ENOSYS;
}
- return error;
+
+ acpi_pm_start(acpi_state);
+ return 0;
}
/**
@@ -634,10 +640,8 @@ static int acpi_hibernation_begin(void)
int error;
error = nvs_nosave ? 0 : suspend_nvs_alloc();
- if (!error) {
- acpi_target_sleep_state = ACPI_STATE_S4;
- acpi_sleep_tts_switch(acpi_target_sleep_state);
- }
+ if (!error)
+ acpi_pm_start(ACPI_STATE_S4);
return error;
}
@@ -716,8 +720,10 @@ static int acpi_hibernation_begin_old(void)
if (!error) {
if (!nvs_nosave)
error = suspend_nvs_alloc();
- if (!error)
+ if (!error) {
acpi_target_sleep_state = ACPI_STATE_S4;
+ acpi_scan_lock_acquire();
+ }
}
return error;
}
diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index a33821ca3895..6a0329340b42 100644
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -50,11 +50,6 @@
#define ACPI_THERMAL_CLASS "thermal_zone"
#define ACPI_THERMAL_DEVICE_NAME "Thermal Zone"
-#define ACPI_THERMAL_FILE_STATE "state"
-#define ACPI_THERMAL_FILE_TEMPERATURE "temperature"
-#define ACPI_THERMAL_FILE_TRIP_POINTS "trip_points"
-#define ACPI_THERMAL_FILE_COOLING_MODE "cooling_mode"
-#define ACPI_THERMAL_FILE_POLLING_FREQ "polling_frequency"
#define ACPI_THERMAL_NOTIFY_TEMPERATURE 0x80
#define ACPI_THERMAL_NOTIFY_THRESHOLDS 0x81
#define ACPI_THERMAL_NOTIFY_DEVICES 0x82
@@ -190,7 +185,6 @@ struct acpi_thermal {
struct thermal_zone_device *thermal_zone;
int tz_enabled;
int kelvin_offset;
- struct mutex lock;
};
/* --------------------------------------------------------------------------
@@ -239,26 +233,16 @@ static int acpi_thermal_get_polling_frequency(struct acpi_thermal *tz)
static int acpi_thermal_set_cooling_mode(struct acpi_thermal *tz, int mode)
{
- acpi_status status = AE_OK;
- union acpi_object arg0 = { ACPI_TYPE_INTEGER };
- struct acpi_object_list arg_list = { 1, &arg0 };
- acpi_handle handle = NULL;
-
-
if (!tz)
return -EINVAL;
- status = acpi_get_handle(tz->device->handle, "_SCP", &handle);
- if (ACPI_FAILURE(status)) {
+ if (!acpi_has_method(tz->device->handle, "_SCP")) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "_SCP not present\n"));
return -ENODEV;
- }
-
- arg0.integer.value = mode;
-
- status = acpi_evaluate_object(handle, NULL, &arg_list, NULL);
- if (ACPI_FAILURE(status))
+ } else if (ACPI_FAILURE(acpi_execute_simple_method(tz->device->handle,
+ "_SCP", mode))) {
return -ENODEV;
+ }
return 0;
}
@@ -491,14 +475,14 @@ static int acpi_thermal_trips_update(struct acpi_thermal *tz, int flag)
break;
}
- if (flag & ACPI_TRIPS_DEVICES) {
- memset(&devices, 0, sizeof(struct acpi_handle_list));
+ if ((flag & ACPI_TRIPS_DEVICES)
+ && acpi_has_method(tz->device->handle, "_TZD")) {
+ memset(&devices, 0, sizeof(devices));
status = acpi_evaluate_reference(tz->device->handle, "_TZD",
NULL, &devices);
- if (memcmp(&tz->devices, &devices,
- sizeof(struct acpi_handle_list))) {
- memcpy(&tz->devices, &devices,
- sizeof(struct acpi_handle_list));
+ if (ACPI_SUCCESS(status)
+ && memcmp(&tz->devices, &devices, sizeof(devices))) {
+ tz->devices = devices;
ACPI_THERMAL_TRIPS_EXCEPTION(flag, "device");
}
}
@@ -769,7 +753,6 @@ static int thermal_notify(struct thermal_zone_device *thermal, int trip,
else
return 0;
- acpi_bus_generate_proc_event(tz->device, type, 1);
acpi_bus_generate_netlink_event(tz->device->pnp.device_class,
dev_name(&tz->device->dev), type, 1);
@@ -850,12 +833,13 @@ static int acpi_thermal_cooling_device_cb(struct thermal_zone_device *thermal,
if (ACPI_SUCCESS(status) && (dev == device)) {
if (bind)
result = thermal_zone_bind_cooling_device
- (thermal, -1, cdev,
- THERMAL_NO_LIMIT,
+ (thermal, THERMAL_TRIPS_NONE,
+ cdev, THERMAL_NO_LIMIT,
THERMAL_NO_LIMIT);
else
result = thermal_zone_unbind_cooling_device
- (thermal, -1, cdev);
+ (thermal, THERMAL_TRIPS_NONE,
+ cdev);
if (result)
goto failed;
}
@@ -980,14 +964,12 @@ static void acpi_thermal_notify(struct acpi_device *device, u32 event)
case ACPI_THERMAL_NOTIFY_THRESHOLDS:
acpi_thermal_trips_update(tz, ACPI_TRIPS_REFRESH_THRESHOLDS);
acpi_thermal_check(tz);
- acpi_bus_generate_proc_event(device, event, 0);
acpi_bus_generate_netlink_event(device->pnp.device_class,
dev_name(&device->dev), event, 0);
break;
case ACPI_THERMAL_NOTIFY_DEVICES:
acpi_thermal_trips_update(tz, ACPI_TRIPS_REFRESH_DEVICES);
acpi_thermal_check(tz);
- acpi_bus_generate_proc_event(device, event, 0);
acpi_bus_generate_netlink_event(device->pnp.device_class,
dev_name(&device->dev), event, 0);
break;
@@ -1101,8 +1083,6 @@ static int acpi_thermal_add(struct acpi_device *device)
strcpy(acpi_device_name(device), ACPI_THERMAL_DEVICE_NAME);
strcpy(acpi_device_class(device), ACPI_THERMAL_CLASS);
device->driver_data = tz;
- mutex_init(&tz->lock);
-
result = acpi_thermal_get_info(tz);
if (result)
@@ -1135,7 +1115,6 @@ static int acpi_thermal_remove(struct acpi_device *device)
tz = acpi_driver_data(device);
acpi_thermal_unregister_thermal_zone(tz);
- mutex_destroy(&tz->lock);
kfree(tz);
return 0;
}
diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c
index 744371304313..552248b0005b 100644
--- a/drivers/acpi/utils.c
+++ b/drivers/acpi/utils.c
@@ -495,3 +495,73 @@ acpi_handle_printk(const char *level, acpi_handle handle, const char *fmt, ...)
kfree(buffer.pointer);
}
EXPORT_SYMBOL(acpi_handle_printk);
+
+/**
+ * acpi_has_method: Check whether @handle has a method named @name
+ * @handle: ACPI device handle
+ * @name: name of object or method
+ *
+ * Check whether @handle has a method named @name.
+ */
+bool acpi_has_method(acpi_handle handle, char *name)
+{
+ acpi_handle tmp;
+
+ return ACPI_SUCCESS(acpi_get_handle(handle, name, &tmp));
+}
+EXPORT_SYMBOL(acpi_has_method);
+
+acpi_status acpi_execute_simple_method(acpi_handle handle, char *method,
+ u64 arg)
+{
+ union acpi_object obj = { .type = ACPI_TYPE_INTEGER };
+ struct acpi_object_list arg_list = { .count = 1, .pointer = &obj, };
+
+ obj.integer.value = arg;
+
+ return acpi_evaluate_object(handle, method, &arg_list, NULL);
+}
+EXPORT_SYMBOL(acpi_execute_simple_method);
+
+/**
+ * acpi_evaluate_ej0: Evaluate _EJ0 method for hotplug operations
+ * @handle: ACPI device handle
+ *
+ * Evaluate device's _EJ0 method for hotplug operations.
+ */
+acpi_status acpi_evaluate_ej0(acpi_handle handle)
+{
+ acpi_status status;
+
+ status = acpi_execute_simple_method(handle, "_EJ0", 1);
+ if (status == AE_NOT_FOUND)
+ acpi_handle_warn(handle, "No _EJ0 support for device\n");
+ else if (ACPI_FAILURE(status))
+ acpi_handle_warn(handle, "Eject failed (0x%x)\n", status);
+
+ return status;
+}
+
+/**
+ * acpi_evaluate_lck: Evaluate _LCK method to lock/unlock device
+ * @handle: ACPI device handle
+ * @lock: lock device if non-zero, otherwise unlock device
+ *
+ * Evaluate device's _LCK method if present to lock/unlock device
+ */
+acpi_status acpi_evaluate_lck(acpi_handle handle, int lock)
+{
+ acpi_status status;
+
+ status = acpi_execute_simple_method(handle, "_LCK", !!lock);
+ if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
+ if (lock)
+ acpi_handle_warn(handle,
+ "Locking device failed (0x%x)\n", status);
+ else
+ acpi_handle_warn(handle,
+ "Unlocking device failed (0x%x)\n", status);
+ }
+
+ return status;
+}
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index 3270d3c8ba4e..aebcf6355df4 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -1,5 +1,5 @@
/*
- * video.c - ACPI Video Driver ($Revision:$)
+ * video.c - ACPI Video Driver
*
* Copyright (C) 2004 Luming Yu <luming.yu@intel.com>
* Copyright (C) 2004 Bruno Ducrot <ducrot@poupinou.org>
@@ -88,7 +88,7 @@ module_param(allow_duplicates, bool, 0644);
static bool use_bios_initial_backlight = 1;
module_param(use_bios_initial_backlight, bool, 0644);
-static int register_count = 0;
+static int register_count;
static int acpi_video_bus_add(struct acpi_device *device);
static int acpi_video_bus_remove(struct acpi_device *device);
static void acpi_video_bus_notify(struct acpi_device *device, u32 event);
@@ -118,26 +118,26 @@ struct acpi_video_bus_flags {
};
struct acpi_video_bus_cap {
- u8 _DOS:1; /*Enable/Disable output switching */
- u8 _DOD:1; /*Enumerate all devices attached to display adapter */
- u8 _ROM:1; /*Get ROM Data */
- u8 _GPD:1; /*Get POST Device */
- u8 _SPD:1; /*Set POST Device */
- u8 _VPO:1; /*Video POST Options */
+ u8 _DOS:1; /* Enable/Disable output switching */
+ u8 _DOD:1; /* Enumerate all devices attached to display adapter */
+ u8 _ROM:1; /* Get ROM Data */
+ u8 _GPD:1; /* Get POST Device */
+ u8 _SPD:1; /* Set POST Device */
+ u8 _VPO:1; /* Video POST Options */
u8 reserved:2;
};
struct acpi_video_device_attrib {
u32 display_index:4; /* A zero-based instance of the Display */
- u32 display_port_attachment:4; /*This field differentiates the display type */
- u32 display_type:4; /*Describe the specific type in use */
- u32 vendor_specific:4; /*Chipset Vendor Specific */
- u32 bios_can_detect:1; /*BIOS can detect the device */
- u32 depend_on_vga:1; /*Non-VGA output device whose power is related to
+ u32 display_port_attachment:4; /* This field differentiates the display type */
+ u32 display_type:4; /* Describe the specific type in use */
+ u32 vendor_specific:4; /* Chipset Vendor Specific */
+ u32 bios_can_detect:1; /* BIOS can detect the device */
+ u32 depend_on_vga:1; /* Non-VGA output device whose power is related to
the VGA device. */
- u32 pipe_id:3; /*For VGA multiple-head devices. */
- u32 reserved:10; /*Must be 0 */
- u32 device_id_scheme:1; /*Device ID Scheme */
+ u32 pipe_id:3; /* For VGA multiple-head devices. */
+ u32 reserved:10; /* Must be 0 */
+ u32 device_id_scheme:1; /* Device ID Scheme */
};
struct acpi_video_enumerated_device {
@@ -174,19 +174,17 @@ struct acpi_video_device_flags {
};
struct acpi_video_device_cap {
- u8 _ADR:1; /*Return the unique ID */
- u8 _BCL:1; /*Query list of brightness control levels supported */
- u8 _BCM:1; /*Set the brightness level */
+ u8 _ADR:1; /* Return the unique ID */
+ u8 _BCL:1; /* Query list of brightness control levels supported */
+ u8 _BCM:1; /* Set the brightness level */
u8 _BQC:1; /* Get current brightness level */
u8 _BCQ:1; /* Some buggy BIOS uses _BCQ instead of _BQC */
- u8 _DDC:1; /*Return the EDID for this device */
+ u8 _DDC:1; /* Return the EDID for this device */
};
struct acpi_video_brightness_flags {
u8 _BCL_no_ac_battery_levels:1; /* no AC/Battery levels in _BCL */
- u8 _BCL_reversed:1; /* _BCL package is in a reversed order*/
- u8 _BCL_use_index:1; /* levels in _BCL are index values */
- u8 _BCM_use_index:1; /* input of _BCM is an index value */
+ u8 _BCL_reversed:1; /* _BCL package is in a reversed order */
u8 _BQC_use_index:1; /* _BQC returns an index value */
};
@@ -231,21 +229,22 @@ static int acpi_video_get_next_level(struct acpi_video_device *device,
static int acpi_video_switch_brightness(struct acpi_video_device *device,
int event);
-/*backlight device sysfs support*/
+/* backlight device sysfs support */
static int acpi_video_get_brightness(struct backlight_device *bd)
{
unsigned long long cur_level;
int i;
- struct acpi_video_device *vd =
- (struct acpi_video_device *)bl_get_data(bd);
+ struct acpi_video_device *vd = bl_get_data(bd);
if (acpi_video_device_lcd_get_level_current(vd, &cur_level, false))
return -EINVAL;
for (i = 2; i < vd->brightness->count; i++) {
if (vd->brightness->levels[i] == cur_level)
- /* The first two entries are special - see page 575
- of the ACPI spec 3.0 */
- return i-2;
+ /*
+ * The first two entries are special - see page 575
+ * of the ACPI spec 3.0
+ */
+ return i - 2;
}
return 0;
}
@@ -253,8 +252,7 @@ static int acpi_video_get_brightness(struct backlight_device *bd)
static int acpi_video_set_brightness(struct backlight_device *bd)
{
int request_level = bd->props.brightness + 2;
- struct acpi_video_device *vd =
- (struct acpi_video_device *)bl_get_data(bd);
+ struct acpi_video_device *vd = bl_get_data(bd);
return acpi_video_device_lcd_set_level(vd,
vd->brightness->levels[request_level]);
@@ -302,11 +300,11 @@ video_set_cur_state(struct thermal_cooling_device *cooling_dev, unsigned long st
struct acpi_video_device *video = acpi_driver_data(device);
int level;
- if ( state >= video->brightness->count - 2)
+ if (state >= video->brightness->count - 2)
return -EINVAL;
state = video->brightness->count - state;
- level = video->brightness->levels[state -1];
+ level = video->brightness->levels[state - 1];
return acpi_video_device_lcd_set_level(video, level);
}
@@ -316,9 +314,11 @@ static const struct thermal_cooling_device_ops video_cooling_ops = {
.set_cur_state = video_set_cur_state,
};
-/* --------------------------------------------------------------------------
- Video Management
- -------------------------------------------------------------------------- */
+/*
+ * --------------------------------------------------------------------------
+ * Video Management
+ * --------------------------------------------------------------------------
+ */
static int
acpi_video_device_lcd_query_levels(struct acpi_video_device *device,
@@ -345,7 +345,7 @@ acpi_video_device_lcd_query_levels(struct acpi_video_device *device,
return 0;
- err:
+err:
kfree(buffer.pointer);
return status;
@@ -355,14 +355,10 @@ static int
acpi_video_device_lcd_set_level(struct acpi_video_device *device, int level)
{
int status;
- union acpi_object arg0 = { ACPI_TYPE_INTEGER };
- struct acpi_object_list args = { 1, &arg0 };
int state;
- arg0.integer.value = level;
-
- status = acpi_evaluate_object(device->dev->handle, "_BCM",
- &args, NULL);
+ status = acpi_execute_simple_method(device->dev->handle,
+ "_BCM", level);
if (ACPI_FAILURE(status)) {
ACPI_ERROR((AE_INFO, "Evaluating _BCM failed"));
return -EIO;
@@ -546,7 +542,7 @@ acpi_video_device_lcd_get_level_current(struct acpi_video_device *device,
if (device->brightness->levels[i] == *level) {
device->brightness->curr = *level;
return 0;
- }
+ }
/*
* BQC returned an invalid level.
* Stop using it.
@@ -556,7 +552,8 @@ acpi_video_device_lcd_get_level_current(struct acpi_video_device *device,
buf));
device->cap._BQC = device->cap._BCQ = 0;
} else {
- /* Fixme:
+ /*
+ * Fixme:
* should we return an error or ignore this failure?
* dev->brightness->curr is a cached value which stores
* the correct current backlight level in most cases.
@@ -615,8 +612,8 @@ acpi_video_device_EDID(struct acpi_video_device *device,
/*
* Arg:
- * video : video bus device pointer
- * bios_flag :
+ * video : video bus device pointer
+ * bios_flag :
* 0. The system BIOS should NOT automatically switch(toggle)
* the active display output.
* 1. The system BIOS should automatically switch (toggle) the
@@ -628,9 +625,9 @@ acpi_video_device_EDID(struct acpi_video_device *device,
* lcd_flag :
* 0. The system BIOS should automatically control the brightness level
* of the LCD when the power changes from AC to DC
- * 1. The system BIOS should NOT automatically control the brightness
+ * 1. The system BIOS should NOT automatically control the brightness
* level of the LCD when the power changes from AC to DC.
- * Return Value:
+ * Return Value:
* -EINVAL wrong arg.
*/
@@ -638,18 +635,15 @@ static int
acpi_video_bus_DOS(struct acpi_video_bus *video, int bios_flag, int lcd_flag)
{
acpi_status status;
- union acpi_object arg0 = { ACPI_TYPE_INTEGER };
- struct acpi_object_list args = { 1, &arg0 };
if (!video->cap._DOS)
return 0;
if (bios_flag < 0 || bios_flag > 3 || lcd_flag < 0 || lcd_flag > 1)
return -EINVAL;
- arg0.integer.value = (lcd_flag << 2) | bios_flag;
- video->dos_setting = arg0.integer.value;
- status = acpi_evaluate_object(video->device->handle, "_DOS",
- &args, NULL);
+ video->dos_setting = (lcd_flag << 2) | bios_flag;
+ status = acpi_execute_simple_method(video->device->handle, "_DOS",
+ (lcd_flag << 2) | bios_flag);
if (ACPI_FAILURE(status))
return -EIO;
@@ -717,8 +711,8 @@ static int acpi_video_bqc_quirk(struct acpi_video_device *device,
/*
- * Arg:
- * device : video output device (LCD, CRT, ..)
+ * Arg:
+ * device : video output device (LCD, CRT, ..)
*
* Return Value:
* Maximum brightness level
@@ -806,16 +800,6 @@ acpi_video_init_brightness(struct acpi_video_device *device)
br->count = count;
device->brightness = br;
- /* Check the input/output of _BQC/_BCL/_BCM */
- if ((max_level < 100) && (max_level <= (count - 2)))
- br->flags._BCL_use_index = 1;
-
- /*
- * _BCM is always consistent with _BCL,
- * at least for all the laptops we have ever seen.
- */
- br->flags._BCM_use_index = br->flags._BCL_use_index;
-
/* _BQC uses INDEX while _BCL uses VALUE in some laptops */
br->curr = level = max_level;
@@ -877,7 +861,7 @@ out:
* device : video output device (LCD, CRT, ..)
*
* Return Value:
- * None
+ * None
*
* Find out all required AML methods defined under the output
* device.
@@ -885,28 +869,21 @@ out:
static void acpi_video_device_find_cap(struct acpi_video_device *device)
{
- acpi_handle h_dummy1;
-
- if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_ADR", &h_dummy1))) {
+ if (acpi_has_method(device->dev->handle, "_ADR"))
device->cap._ADR = 1;
- }
- if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_BCL", &h_dummy1))) {
+ if (acpi_has_method(device->dev->handle, "_BCL"))
device->cap._BCL = 1;
- }
- if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_BCM", &h_dummy1))) {
+ if (acpi_has_method(device->dev->handle, "_BCM"))
device->cap._BCM = 1;
- }
- if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle,"_BQC",&h_dummy1)))
+ if (acpi_has_method(device->dev->handle, "_BQC")) {
device->cap._BQC = 1;
- else if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_BCQ",
- &h_dummy1))) {
+ } else if (acpi_has_method(device->dev->handle, "_BCQ")) {
printk(KERN_WARNING FW_BUG "_BCQ is used instead of _BQC\n");
device->cap._BCQ = 1;
}
- if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DDC", &h_dummy1))) {
+ if (acpi_has_method(device->dev->handle, "_DDC"))
device->cap._DDC = 1;
- }
if (acpi_video_backlight_support()) {
struct backlight_properties props;
@@ -914,7 +891,7 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device)
acpi_handle acpi_parent;
struct device *parent = NULL;
int result;
- static int count = 0;
+ static int count;
char *name;
result = acpi_video_init_brightness(device);
@@ -983,37 +960,29 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device)
}
/*
- * Arg:
- * device : video output device (VGA)
+ * Arg:
+ * device : video output device (VGA)
*
* Return Value:
- * None
+ * None
*
* Find out all required AML methods defined under the video bus device.
*/
static void acpi_video_bus_find_cap(struct acpi_video_bus *video)
{
- acpi_handle h_dummy1;
-
- if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_DOS", &h_dummy1))) {
+ if (acpi_has_method(video->device->handle, "_DOS"))
video->cap._DOS = 1;
- }
- if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_DOD", &h_dummy1))) {
+ if (acpi_has_method(video->device->handle, "_DOD"))
video->cap._DOD = 1;
- }
- if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_ROM", &h_dummy1))) {
+ if (acpi_has_method(video->device->handle, "_ROM"))
video->cap._ROM = 1;
- }
- if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_GPD", &h_dummy1))) {
+ if (acpi_has_method(video->device->handle, "_GPD"))
video->cap._GPD = 1;
- }
- if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_SPD", &h_dummy1))) {
+ if (acpi_has_method(video->device->handle, "_SPD"))
video->cap._SPD = 1;
- }
- if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_VPO", &h_dummy1))) {
+ if (acpi_has_method(video->device->handle, "_VPO"))
video->cap._VPO = 1;
- }
}
/*
@@ -1034,7 +1003,8 @@ static int acpi_video_bus_check(struct acpi_video_bus *video)
return -ENODEV;
pci_dev_put(dev);
- /* Since there is no HID, CID and so on for VGA driver, we have
+ /*
+ * Since there is no HID, CID and so on for VGA driver, we have
* to check well known required nodes.
*/
@@ -1064,12 +1034,14 @@ static int acpi_video_bus_check(struct acpi_video_bus *video)
return status;
}
-/* --------------------------------------------------------------------------
- Driver Interface
- -------------------------------------------------------------------------- */
+/*
+ * --------------------------------------------------------------------------
+ * Driver Interface
+ * --------------------------------------------------------------------------
+ */
/* device interface */
-static struct acpi_video_device_attrib*
+static struct acpi_video_device_attrib *
acpi_video_get_device_attr(struct acpi_video_bus *video, unsigned long device_id)
{
struct acpi_video_enumerated_device *ids;
@@ -1107,7 +1079,7 @@ acpi_video_bus_get_one_device(struct acpi_device *device,
unsigned long long device_id;
int status, device_type;
struct acpi_video_device *data;
- struct acpi_video_device_attrib* attribute;
+ struct acpi_video_device_attrib *attribute;
status =
acpi_evaluate_integer(device->handle, "_ADR", NULL, &device_id);
@@ -1129,7 +1101,7 @@ acpi_video_bus_get_one_device(struct acpi_device *device,
attribute = acpi_video_get_device_attr(video, device_id);
- if((attribute != NULL) && attribute->device_id_scheme) {
+ if (attribute && attribute->device_id_scheme) {
switch (attribute->display_type) {
case ACPI_VIDEO_DISPLAY_CRT:
data->flags.crt = 1;
@@ -1147,24 +1119,24 @@ acpi_video_bus_get_one_device(struct acpi_device *device,
data->flags.unknown = 1;
break;
}
- if(attribute->bios_can_detect)
+ if (attribute->bios_can_detect)
data->flags.bios = 1;
} else {
/* Check for legacy IDs */
device_type = acpi_video_get_device_type(video, device_id);
/* Ignore bits 16 and 18-20 */
switch (device_type & 0xffe2ffff) {
- case ACPI_VIDEO_DISPLAY_LEGACY_MONITOR:
- data->flags.crt = 1;
- break;
- case ACPI_VIDEO_DISPLAY_LEGACY_PANEL:
- data->flags.lcd = 1;
- break;
- case ACPI_VIDEO_DISPLAY_LEGACY_TV:
- data->flags.tvout = 1;
- break;
- default:
- data->flags.unknown = 1;
+ case ACPI_VIDEO_DISPLAY_LEGACY_MONITOR:
+ data->flags.crt = 1;
+ break;
+ case ACPI_VIDEO_DISPLAY_LEGACY_PANEL:
+ data->flags.lcd = 1;
+ break;
+ case ACPI_VIDEO_DISPLAY_LEGACY_TV:
+ data->flags.tvout = 1;
+ break;
+ default:
+ data->flags.unknown = 1;
}
}
@@ -1187,12 +1159,12 @@ acpi_video_bus_get_one_device(struct acpi_device *device,
/*
* Arg:
- * video : video bus device
+ * video : video bus device
*
* Return:
- * none
- *
- * Enumerate the video device list of the video bus,
+ * none
+ *
+ * Enumerate the video device list of the video bus,
* bind the ids with the corresponding video devices
* under the video bus.
*/
@@ -1211,13 +1183,13 @@ static void acpi_video_device_rebind(struct acpi_video_bus *video)
/*
* Arg:
- * video : video bus device
- * device : video output device under the video
- * bus
+ * video : video bus device
+ * device : video output device under the video
+ * bus
*
* Return:
- * none
- *
+ * none
+ *
* Bind the ids with the corresponding video devices
* under the video bus.
*/
@@ -1240,11 +1212,11 @@ acpi_video_device_bind(struct acpi_video_bus *video,
/*
* Arg:
- * video : video bus device
+ * video : video bus device
*
* Return:
- * < 0 : error
- *
+ * < 0 : error
+ *
* Call _DOD to enumerate all devices attached to display adapter
*
*/
@@ -1305,7 +1277,7 @@ static int acpi_video_device_enumerate(struct acpi_video_bus *video)
video->attached_array = active_list;
video->attached_count = count;
- out:
+out:
kfree(buffer.pointer);
return status;
}
@@ -1572,7 +1544,6 @@ static void acpi_video_bus_notify(struct acpi_device *device, u32 event)
switch (event) {
case ACPI_VIDEO_NOTIFY_SWITCH: /* User requested a switch,
* most likely via hotkey. */
- acpi_bus_generate_proc_event(device, event, 0);
keycode = KEY_SWITCHVIDEOMODE;
break;
@@ -1580,20 +1551,16 @@ static void acpi_video_bus_notify(struct acpi_device *device, u32 event)
* connector. */
acpi_video_device_enumerate(video);
acpi_video_device_rebind(video);
- acpi_bus_generate_proc_event(device, event, 0);
keycode = KEY_SWITCHVIDEOMODE;
break;
case ACPI_VIDEO_NOTIFY_CYCLE: /* Cycle Display output hotkey pressed. */
- acpi_bus_generate_proc_event(device, event, 0);
keycode = KEY_SWITCHVIDEOMODE;
break;
case ACPI_VIDEO_NOTIFY_NEXT_OUTPUT: /* Next Display output hotkey pressed. */
- acpi_bus_generate_proc_event(device, event, 0);
keycode = KEY_VIDEO_NEXT;
break;
case ACPI_VIDEO_NOTIFY_PREV_OUTPUT: /* previous Display output hotkey pressed. */
- acpi_bus_generate_proc_event(device, event, 0);
keycode = KEY_VIDEO_PREV;
break;
@@ -1636,31 +1603,26 @@ static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data)
case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS: /* Cycle brightness */
if (brightness_switch_enabled)
acpi_video_switch_brightness(video_device, event);
- acpi_bus_generate_proc_event(device, event, 0);
keycode = KEY_BRIGHTNESS_CYCLE;
break;
case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS: /* Increase brightness */
if (brightness_switch_enabled)
acpi_video_switch_brightness(video_device, event);
- acpi_bus_generate_proc_event(device, event, 0);
keycode = KEY_BRIGHTNESSUP;
break;
case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS: /* Decrease brightness */
if (brightness_switch_enabled)
acpi_video_switch_brightness(video_device, event);
- acpi_bus_generate_proc_event(device, event, 0);
keycode = KEY_BRIGHTNESSDOWN;
break;
case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS: /* zero brightness */
if (brightness_switch_enabled)
acpi_video_switch_brightness(video_device, event);
- acpi_bus_generate_proc_event(device, event, 0);
keycode = KEY_BRIGHTNESS_ZERO;
break;
case ACPI_VIDEO_NOTIFY_DISPLAY_OFF: /* display device off */
if (brightness_switch_enabled)
acpi_video_switch_brightness(video_device, event);
- acpi_bus_generate_proc_event(device, event, 0);
keycode = KEY_DISPLAY_OFF;
break;
default:
@@ -1760,7 +1722,7 @@ static int acpi_video_bus_add(struct acpi_device *device)
if (!strcmp(device->pnp.bus_id, "VID")) {
if (instance)
device->pnp.bus_id[3] = '0' + instance;
- instance ++;
+ instance++;
}
/* a hack to fix the duplicate name "VGA" problem on Pa 3553 */
if (!strcmp(device->pnp.bus_id, "VGA")) {
diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c
index c3397748ba46..940edbf2fe8f 100644
--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -53,14 +53,13 @@ acpi_backlight_cap_match(acpi_handle handle, u32 level, void *context,
void **retyurn_value)
{
long *cap = context;
- acpi_handle h_dummy;
- if (ACPI_SUCCESS(acpi_get_handle(handle, "_BCM", &h_dummy)) &&
- ACPI_SUCCESS(acpi_get_handle(handle, "_BCL", &h_dummy))) {
+ if (acpi_has_method(handle, "_BCM") &&
+ acpi_has_method(handle, "_BCL")) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found generic backlight "
"support\n"));
*cap |= ACPI_VIDEO_BACKLIGHT;
- if (ACPI_FAILURE(acpi_get_handle(handle, "_BQC", &h_dummy)))
+ if (!acpi_has_method(handle, "_BQC"))
printk(KERN_WARNING FW_BUG PREFIX "No _BQC method, "
"cannot determine initial brightness\n");
/* We have backlight support, no need to scan further */
@@ -79,22 +78,20 @@ acpi_backlight_cap_match(acpi_handle handle, u32 level, void *context,
*/
long acpi_is_video_device(acpi_handle handle)
{
- acpi_handle h_dummy;
long video_caps = 0;
/* Is this device able to support video switching ? */
- if (ACPI_SUCCESS(acpi_get_handle(handle, "_DOD", &h_dummy)) ||
- ACPI_SUCCESS(acpi_get_handle(handle, "_DOS", &h_dummy)))
+ if (acpi_has_method(handle, "_DOD") || acpi_has_method(handle, "_DOS"))
video_caps |= ACPI_VIDEO_OUTPUT_SWITCHING;
/* Is this device able to retrieve a video ROM ? */
- if (ACPI_SUCCESS(acpi_get_handle(handle, "_ROM", &h_dummy)))
+ if (acpi_has_method(handle, "_ROM"))
video_caps |= ACPI_VIDEO_ROM_AVAILABLE;
/* Is this device able to configure which video head to be POSTed ? */
- if (ACPI_SUCCESS(acpi_get_handle(handle, "_VPO", &h_dummy)) &&
- ACPI_SUCCESS(acpi_get_handle(handle, "_GPD", &h_dummy)) &&
- ACPI_SUCCESS(acpi_get_handle(handle, "_SPD", &h_dummy)))
+ if (acpi_has_method(handle, "_VPO") &&
+ acpi_has_method(handle, "_GPD") &&
+ acpi_has_method(handle, "_SPD"))
video_caps |= ACPI_VIDEO_DEVICE_POSTING;
/* Only check for backlight functionality if one of the above hit. */
diff --git a/drivers/ata/libata-acpi.c b/drivers/ata/libata-acpi.c
index cf4e7020adac..da8170dfc90f 100644
--- a/drivers/ata/libata-acpi.c
+++ b/drivers/ata/libata-acpi.c
@@ -947,11 +947,11 @@ static void pata_acpi_set_state(struct ata_port *ap, pm_message_t state)
continue;
acpi_bus_set_power(dev_handle, state.event & PM_EVENT_RESUME ?
- ACPI_STATE_D0 : ACPI_STATE_D3);
+ ACPI_STATE_D0 : ACPI_STATE_D3_COLD);
}
if (!(state.event & PM_EVENT_RESUME))
- acpi_bus_set_power(port_handle, ACPI_STATE_D3);
+ acpi_bus_set_power(port_handle, ACPI_STATE_D3_COLD);
}
/**
diff --git a/drivers/base/core.c b/drivers/base/core.c
index c7b0925f627a..c7cfadcf6752 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -50,6 +50,28 @@ static struct kobject *dev_kobj;
struct kobject *sysfs_dev_char_kobj;
struct kobject *sysfs_dev_block_kobj;
+static DEFINE_MUTEX(device_hotplug_lock);
+
+void lock_device_hotplug(void)
+{
+ mutex_lock(&device_hotplug_lock);
+}
+
+void unlock_device_hotplug(void)
+{
+ mutex_unlock(&device_hotplug_lock);
+}
+
+int lock_device_hotplug_sysfs(void)
+{
+ if (mutex_trylock(&device_hotplug_lock))
+ return 0;
+
+ /* Avoid busy looping (5 ms of sleep should do). */
+ msleep(5);
+ return restart_syscall();
+}
+
#ifdef CONFIG_BLOCK
static inline int device_is_not_partition(struct device *dev)
{
@@ -407,9 +429,9 @@ static ssize_t online_show(struct device *dev, struct device_attribute *attr,
{
bool val;
- lock_device_hotplug();
+ device_lock(dev);
val = !dev->offline;
- unlock_device_hotplug();
+ device_unlock(dev);
return sprintf(buf, "%u\n", val);
}
@@ -423,7 +445,10 @@ static ssize_t online_store(struct device *dev, struct device_attribute *attr,
if (ret < 0)
return ret;
- lock_device_hotplug();
+ ret = lock_device_hotplug_sysfs();
+ if (ret)
+ return ret;
+
ret = val ? device_online(dev) : device_offline(dev);
unlock_device_hotplug();
return ret < 0 ? ret : count;
@@ -1450,18 +1475,6 @@ int __init devices_init(void)
return -ENOMEM;
}
-static DEFINE_MUTEX(device_hotplug_lock);
-
-void lock_device_hotplug(void)
-{
- mutex_lock(&device_hotplug_lock);
-}
-
-void unlock_device_hotplug(void)
-{
- mutex_unlock(&device_hotplug_lock);
-}
-
static int device_check_offline(struct device *dev, void *not_used)
{
int ret;
diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c
index 6bfaaca6955e..848ebbd25717 100644
--- a/drivers/base/cpu.c
+++ b/drivers/base/cpu.c
@@ -14,6 +14,7 @@
#include <linux/slab.h>
#include <linux/percpu.h>
#include <linux/acpi.h>
+#include <linux/of.h>
#include "base.h"
@@ -293,6 +294,7 @@ int register_cpu(struct cpu *cpu, int num)
cpu->dev.release = cpu_device_release;
cpu->dev.offline_disabled = !cpu->hotpluggable;
cpu->dev.offline = !cpu_online(num);
+ cpu->dev.of_node = of_get_cpu_node(num, NULL);
#ifdef CONFIG_ARCH_HAS_CPU_AUTOPROBE
cpu->dev.bus->uevent = arch_cpu_uevent;
#endif
diff --git a/drivers/base/memory.c b/drivers/base/memory.c
index 1c617623c8ae..9e59f6535c44 100644
--- a/drivers/base/memory.c
+++ b/drivers/base/memory.c
@@ -321,7 +321,9 @@ store_mem_state(struct device *dev,
struct memory_block *mem = to_memory_block(dev);
int ret, online_type;
- lock_device_hotplug();
+ ret = lock_device_hotplug_sysfs();
+ if (ret)
+ return ret;
if (!strncmp(buf, "online_kernel", min_t(int, count, 13)))
online_type = ONLINE_KERNEL;
diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c
index 5a9b6569dd74..9f098a82cf04 100644
--- a/drivers/base/power/main.c
+++ b/drivers/base/power/main.c
@@ -28,6 +28,7 @@
#include <linux/sched.h>
#include <linux/async.h>
#include <linux/suspend.h>
+#include <trace/events/power.h>
#include <linux/cpuidle.h>
#include "../base.h"
#include "power.h"
@@ -56,6 +57,30 @@ static pm_message_t pm_transition;
static int async_error;
+static char *pm_verb(int event)
+{
+ switch (event) {
+ case PM_EVENT_SUSPEND:
+ return "suspend";
+ case PM_EVENT_RESUME:
+ return "resume";
+ case PM_EVENT_FREEZE:
+ return "freeze";
+ case PM_EVENT_QUIESCE:
+ return "quiesce";
+ case PM_EVENT_HIBERNATE:
+ return "hibernate";
+ case PM_EVENT_THAW:
+ return "thaw";
+ case PM_EVENT_RESTORE:
+ return "restore";
+ case PM_EVENT_RECOVER:
+ return "recover";
+ default:
+ return "(unknown PM event)";
+ }
+}
+
/**
* device_pm_sleep_init - Initialize system suspend-related device fields.
* @dev: Device object being initialized.
@@ -172,16 +197,21 @@ static ktime_t initcall_debug_start(struct device *dev)
}
static void initcall_debug_report(struct device *dev, ktime_t calltime,
- int error)
+ int error, pm_message_t state, char *info)
{
- ktime_t delta, rettime;
+ ktime_t rettime;
+ s64 nsecs;
+
+ rettime = ktime_get();
+ nsecs = (s64) ktime_to_ns(ktime_sub(rettime, calltime));
if (pm_print_times_enabled) {
- rettime = ktime_get();
- delta = ktime_sub(rettime, calltime);
pr_info("call %s+ returned %d after %Ld usecs\n", dev_name(dev),
- error, (unsigned long long)ktime_to_ns(delta) >> 10);
+ error, (unsigned long long)nsecs >> 10);
}
+
+ trace_device_pm_report_time(dev, info, nsecs, pm_verb(state.event),
+ error);
}
/**
@@ -309,30 +339,6 @@ static pm_callback_t pm_noirq_op(const struct dev_pm_ops *ops, pm_message_t stat
return NULL;
}
-static char *pm_verb(int event)
-{
- switch (event) {
- case PM_EVENT_SUSPEND:
- return "suspend";
- case PM_EVENT_RESUME:
- return "resume";
- case PM_EVENT_FREEZE:
- return "freeze";
- case PM_EVENT_QUIESCE:
- return "quiesce";
- case PM_EVENT_HIBERNATE:
- return "hibernate";
- case PM_EVENT_THAW:
- return "thaw";
- case PM_EVENT_RESTORE:
- return "restore";
- case PM_EVENT_RECOVER:
- return "recover";
- default:
- return "(unknown PM event)";
- }
-}
-
static void pm_dev_dbg(struct device *dev, pm_message_t state, char *info)
{
dev_dbg(dev, "%s%s%s\n", info, pm_verb(state.event),
@@ -379,7 +385,7 @@ static int dpm_run_callback(pm_callback_t cb, struct device *dev,
error = cb(dev);
suspend_report_result(cb, error);
- initcall_debug_report(dev, calltime, error);
+ initcall_debug_report(dev, calltime, error, state, info);
return error;
}
@@ -1027,7 +1033,8 @@ EXPORT_SYMBOL_GPL(dpm_suspend_end);
* @cb: Suspend callback to execute.
*/
static int legacy_suspend(struct device *dev, pm_message_t state,
- int (*cb)(struct device *dev, pm_message_t state))
+ int (*cb)(struct device *dev, pm_message_t state),
+ char *info)
{
int error;
ktime_t calltime;
@@ -1037,7 +1044,7 @@ static int legacy_suspend(struct device *dev, pm_message_t state,
error = cb(dev, state);
suspend_report_result(cb, error);
- initcall_debug_report(dev, calltime, error);
+ initcall_debug_report(dev, calltime, error, state, info);
return error;
}
@@ -1097,7 +1104,8 @@ static int __device_suspend(struct device *dev, pm_message_t state, bool async)
goto Run;
} else if (dev->class->suspend) {
pm_dev_dbg(dev, state, "legacy class ");
- error = legacy_suspend(dev, state, dev->class->suspend);
+ error = legacy_suspend(dev, state, dev->class->suspend,
+ "legacy class ");
goto End;
}
}
@@ -1108,7 +1116,8 @@ static int __device_suspend(struct device *dev, pm_message_t state, bool async)
callback = pm_op(dev->bus->pm, state);
} else if (dev->bus->suspend) {
pm_dev_dbg(dev, state, "legacy bus ");
- error = legacy_suspend(dev, state, dev->bus->suspend);
+ error = legacy_suspend(dev, state, dev->bus->suspend,
+ "legacy bus ");
goto End;
}
}
diff --git a/drivers/base/power/opp.c b/drivers/base/power/opp.c
index c8ec186303db..ef89897c6043 100644
--- a/drivers/base/power/opp.c
+++ b/drivers/base/power/opp.c
@@ -460,6 +460,7 @@ int opp_add(struct device *dev, unsigned long freq, unsigned long u_volt)
srcu_notifier_call_chain(&dev_opp->head, OPP_EVENT_ADD, new_opp);
return 0;
}
+EXPORT_SYMBOL_GPL(opp_add);
/**
* opp_set_availability() - helper to set the availability of an opp
diff --git a/drivers/bus/arm-cci.c b/drivers/bus/arm-cci.c
index 733288967d4d..200926699778 100644
--- a/drivers/bus/arm-cci.c
+++ b/drivers/bus/arm-cci.c
@@ -122,17 +122,8 @@ EXPORT_SYMBOL_GPL(cci_ace_get_port);
static void __init cci_ace_init_ports(void)
{
- int port, ac, cpu;
- u64 hwid;
- const u32 *cell;
- struct device_node *cpun, *cpus;
-
- cpus = of_find_node_by_path("/cpus");
- if (WARN(!cpus, "Missing cpus node, bailing out\n"))
- return;
-
- if (WARN_ON(of_property_read_u32(cpus, "#address-cells", &ac)))
- ac = of_n_addr_cells(cpus);
+ int port, cpu;
+ struct device_node *cpun;
/*
* Port index look-up speeds up the function disabling ports by CPU,
@@ -141,18 +132,13 @@ static void __init cci_ace_init_ports(void)
* The stashed index array is initialized for all possible CPUs
* at probe time.
*/
- for_each_child_of_node(cpus, cpun) {
- if (of_node_cmp(cpun->type, "cpu"))
- continue;
- cell = of_get_property(cpun, "reg", NULL);
- if (WARN(!cell, "%s: missing reg property\n", cpun->full_name))
- continue;
-
- hwid = of_read_number(cell, ac);
- cpu = get_logical_index(hwid & MPIDR_HWID_BITMASK);
+ for_each_possible_cpu(cpu) {
+ /* too early to use cpu->of_node */
+ cpun = of_get_cpu_node(cpu, NULL);
- if (cpu < 0 || !cpu_possible(cpu))
+ if (WARN(!cpun, "Missing cpu device node\n"))
continue;
+
port = __cci_ace_get_port(cpun, ACE_PORT);
if (port < 0)
continue;
diff --git a/drivers/char/sonypi.c b/drivers/char/sonypi.c
index bf2349dbbf7f..7cc1fe2241fd 100644
--- a/drivers/char/sonypi.c
+++ b/drivers/char/sonypi.c
@@ -876,11 +876,6 @@ found:
if (useinput)
sonypi_report_input_event(event);
-#ifdef CONFIG_ACPI
- if (sonypi_acpi_device)
- acpi_bus_generate_proc_event(sonypi_acpi_device, 1, event);
-#endif
-
kfifo_in_locked(&sonypi_device.fifo, (unsigned char *)&event,
sizeof(event), &sonypi_device.fifo_lock);
kill_fasync(&sonypi_device.fifo_async, SIGIO, POLL_IN);
diff --git a/drivers/cpufreq/Kconfig.arm b/drivers/cpufreq/Kconfig.arm
index de4d5d93c3fd..0fa204b244bd 100644
--- a/drivers/cpufreq/Kconfig.arm
+++ b/drivers/cpufreq/Kconfig.arm
@@ -17,37 +17,47 @@ config ARM_DT_BL_CPUFREQ
big.LITTLE platform. This gets frequency tables from DT.
config ARM_EXYNOS_CPUFREQ
- bool "SAMSUNG EXYNOS SoCs"
- depends on ARCH_EXYNOS
+ bool
select CPU_FREQ_TABLE
- default y
- help
- This adds the CPUFreq driver common part for Samsung
- EXYNOS SoCs.
-
- If in doubt, say N.
config ARM_EXYNOS4210_CPUFREQ
- def_bool CPU_EXYNOS4210
+ bool "SAMSUNG EXYNOS4210"
+ depends on CPU_EXYNOS4210
+ default y
+ select ARM_EXYNOS_CPUFREQ
help
This adds the CPUFreq driver for Samsung EXYNOS4210
SoC (S5PV310 or S5PC210).
+ If in doubt, say N.
+
config ARM_EXYNOS4X12_CPUFREQ
- def_bool (SOC_EXYNOS4212 || SOC_EXYNOS4412)
+ bool "SAMSUNG EXYNOS4x12"
+ depends on (SOC_EXYNOS4212 || SOC_EXYNOS4412)
+ default y
+ select ARM_EXYNOS_CPUFREQ
help
This adds the CPUFreq driver for Samsung EXYNOS4X12
SoC (EXYNOS4212 or EXYNOS4412).
+ If in doubt, say N.
+
config ARM_EXYNOS5250_CPUFREQ
- def_bool SOC_EXYNOS5250
+ bool "SAMSUNG EXYNOS5250"
+ depends on SOC_EXYNOS5250
+ default y
+ select ARM_EXYNOS_CPUFREQ
help
This adds the CPUFreq driver for Samsung EXYNOS5250
SoC.
+ If in doubt, say N.
+
config ARM_EXYNOS5440_CPUFREQ
- def_bool SOC_EXYNOS5440
+ bool "SAMSUNG EXYNOS5440"
+ depends on SOC_EXYNOS5440
depends on HAVE_CLK && PM_OPP && OF
+ default y
select CPU_FREQ_TABLE
help
This adds the CPUFreq driver for Samsung EXYNOS5440
@@ -55,6 +65,8 @@ config ARM_EXYNOS5440_CPUFREQ
different than previous exynos controllers so not using
the common exynos framework.
+ If in doubt, say N.
+
config ARM_HIGHBANK_CPUFREQ
tristate "Calxeda Highbank-based"
depends on ARCH_HIGHBANK
diff --git a/drivers/cpufreq/Makefile b/drivers/cpufreq/Makefile
index d345b5a7aa71..ad5866c2ada0 100644
--- a/drivers/cpufreq/Makefile
+++ b/drivers/cpufreq/Makefile
@@ -23,7 +23,7 @@ obj-$(CONFIG_GENERIC_CPUFREQ_CPU0) += cpufreq-cpu0.o
# powernow-k8 can load then. ACPI is preferred to all other hardware-specific drivers.
# speedstep-* is preferred over p4-clockmod.
-obj-$(CONFIG_X86_ACPI_CPUFREQ) += acpi-cpufreq.o mperf.o
+obj-$(CONFIG_X86_ACPI_CPUFREQ) += acpi-cpufreq.o
obj-$(CONFIG_X86_POWERNOW_K8) += powernow-k8.o
obj-$(CONFIG_X86_PCC_CPUFREQ) += pcc-cpufreq.o
obj-$(CONFIG_X86_POWERNOW_K6) += powernow-k6.o
diff --git a/drivers/cpufreq/acpi-cpufreq.c b/drivers/cpufreq/acpi-cpufreq.c
index 39264020b88a..a1260b4549db 100644
--- a/drivers/cpufreq/acpi-cpufreq.c
+++ b/drivers/cpufreq/acpi-cpufreq.c
@@ -45,7 +45,6 @@
#include <asm/msr.h>
#include <asm/processor.h>
#include <asm/cpufeature.h>
-#include "mperf.h"
MODULE_AUTHOR("Paul Diefenbaugh, Dominik Brodowski");
MODULE_DESCRIPTION("ACPI Processor P-States Driver");
@@ -198,7 +197,7 @@ static ssize_t show_cpb(struct cpufreq_policy *policy, char *buf)
return sprintf(buf, "%u\n", boost_enabled);
}
-static struct freq_attr cpb = __ATTR(cpb, 0644, show_cpb, store_cpb);
+cpufreq_freq_attr_rw(cpb);
#endif
static int check_est_cpu(unsigned int cpuid)
@@ -710,7 +709,7 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
return blacklisted;
#endif
- data = kzalloc(sizeof(struct acpi_cpufreq_data), GFP_KERNEL);
+ data = kzalloc(sizeof(*data), GFP_KERNEL);
if (!data)
return -ENOMEM;
@@ -800,7 +799,7 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
goto err_unreg;
}
- data->freq_table = kmalloc(sizeof(struct cpufreq_frequency_table) *
+ data->freq_table = kmalloc(sizeof(*data->freq_table) *
(perf->state_count+1), GFP_KERNEL);
if (!data->freq_table) {
result = -ENOMEM;
@@ -861,10 +860,6 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
/* notify BIOS that we exist */
acpi_processor_notify_smm(THIS_MODULE);
- /* Check for APERF/MPERF support in hardware */
- if (boot_cpu_has(X86_FEATURE_APERFMPERF))
- acpi_cpufreq_driver.getavg = cpufreq_get_measured_perf;
-
pr_debug("CPU%u - ACPI performance management activated.\n", cpu);
for (i = 0; i < perf->state_count; i++)
pr_debug(" %cP%d: %d MHz, %d mW, %d uS\n",
@@ -941,7 +936,6 @@ static struct cpufreq_driver acpi_cpufreq_driver = {
.exit = acpi_cpufreq_cpu_exit,
.resume = acpi_cpufreq_resume,
.name = "acpi-cpufreq",
- .owner = THIS_MODULE,
.attr = acpi_cpufreq_attr,
};
diff --git a/drivers/cpufreq/arm_big_little_dt.c b/drivers/cpufreq/arm_big_little_dt.c
index fd9e3ea6a480..480c0bd0468d 100644
--- a/drivers/cpufreq/arm_big_little_dt.c
+++ b/drivers/cpufreq/arm_big_little_dt.c
@@ -19,12 +19,11 @@
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-#include <linux/cpu.h>
#include <linux/cpufreq.h>
#include <linux/device.h>
#include <linux/export.h>
#include <linux/module.h>
-#include <linux/of.h>
+#include <linux/of_device.h>
#include <linux/opp.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
@@ -34,27 +33,13 @@
/* get cpu node with valid operating-points */
static struct device_node *get_cpu_node_with_valid_op(int cpu)
{
- struct device_node *np = NULL, *parent;
- int count = 0;
+ struct device_node *np = of_cpu_device_node_get(cpu);
- parent = of_find_node_by_path("/cpus");
- if (!parent) {
- pr_err("failed to find OF /cpus\n");
- return NULL;
+ if (!of_get_property(np, "operating-points", NULL)) {
+ of_node_put(np);
+ np = NULL;
}
- for_each_child_of_node(parent, np) {
- if (count++ != cpu)
- continue;
- if (!of_get_property(np, "operating-points", NULL)) {
- of_node_put(np);
- np = NULL;
- }
-
- break;
- }
-
- of_node_put(parent);
return np;
}
@@ -63,11 +48,12 @@ static int dt_init_opp_table(struct device *cpu_dev)
struct device_node *np;
int ret;
- np = get_cpu_node_with_valid_op(cpu_dev->id);
- if (!np)
- return -ENODATA;
+ np = of_node_get(cpu_dev->of_node);
+ if (!np) {
+ pr_err("failed to find cpu%d node\n", cpu_dev->id);
+ return -ENOENT;
+ }
- cpu_dev->of_node = np;
ret = of_init_opp_table(cpu_dev);
of_node_put(np);
@@ -79,9 +65,11 @@ static int dt_get_transition_latency(struct device *cpu_dev)
struct device_node *np;
u32 transition_latency = CPUFREQ_ETERNAL;
- np = get_cpu_node_with_valid_op(cpu_dev->id);
- if (!np)
+ np = of_node_get(cpu_dev->of_node);
+ if (!np) {
+ pr_info("Failed to find cpu node. Use CPUFREQ_ETERNAL transition latency\n");
return CPUFREQ_ETERNAL;
+ }
of_property_read_u32(np, "clock-latency", &transition_latency);
of_node_put(np);
diff --git a/drivers/cpufreq/at32ap-cpufreq.c b/drivers/cpufreq/at32ap-cpufreq.c
index 654488723cb5..e0c38d938997 100644
--- a/drivers/cpufreq/at32ap-cpufreq.c
+++ b/drivers/cpufreq/at32ap-cpufreq.c
@@ -108,7 +108,6 @@ static int __init at32_cpufreq_driver_init(struct cpufreq_policy *policy)
static struct cpufreq_driver at32_driver = {
.name = "at32ap",
- .owner = THIS_MODULE,
.init = at32_cpufreq_driver_init,
.verify = at32_verify_speed,
.target = at32_set_target,
diff --git a/drivers/cpufreq/blackfin-cpufreq.c b/drivers/cpufreq/blackfin-cpufreq.c
index 9cdbbd278a80..ef05978a7237 100644
--- a/drivers/cpufreq/blackfin-cpufreq.c
+++ b/drivers/cpufreq/blackfin-cpufreq.c
@@ -225,7 +225,6 @@ static struct cpufreq_driver bfin_driver = {
.get = bfin_getfreq_khz,
.init = __bfin_cpu_init,
.name = "bfin cpufreq",
- .owner = THIS_MODULE,
.attr = bfin_freq_attr,
};
diff --git a/drivers/cpufreq/cpufreq-cpu0.c b/drivers/cpufreq/cpufreq-cpu0.c
index e9dedb27deca..cbfffa91ebdd 100644
--- a/drivers/cpufreq/cpufreq-cpu0.c
+++ b/drivers/cpufreq/cpufreq-cpu0.c
@@ -69,7 +69,7 @@ static int cpu0_set_target(struct cpufreq_policy *policy,
cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE);
- if (cpu_reg) {
+ if (!IS_ERR(cpu_reg)) {
rcu_read_lock();
opp = opp_find_freq_ceil(cpu_dev, &freq_Hz);
if (IS_ERR(opp)) {
@@ -90,7 +90,7 @@ static int cpu0_set_target(struct cpufreq_policy *policy,
freqs.new / 1000, volt ? volt / 1000 : -1);
/* scaling up? scale voltage before frequency */
- if (cpu_reg && freqs.new > freqs.old) {
+ if (!IS_ERR(cpu_reg) && freqs.new > freqs.old) {
ret = regulator_set_voltage_tol(cpu_reg, volt, tol);
if (ret) {
pr_err("failed to scale voltage up: %d\n", ret);
@@ -102,14 +102,14 @@ static int cpu0_set_target(struct cpufreq_policy *policy,
ret = clk_set_rate(cpu_clk, freq_exact);
if (ret) {
pr_err("failed to set clock rate: %d\n", ret);
- if (cpu_reg)
+ if (!IS_ERR(cpu_reg))
regulator_set_voltage_tol(cpu_reg, volt_old, tol);
freqs.new = freqs.old;
goto post_notify;
}
/* scaling down? scale voltage after frequency */
- if (cpu_reg && freqs.new < freqs.old) {
+ if (!IS_ERR(cpu_reg) && freqs.new < freqs.old) {
ret = regulator_set_voltage_tol(cpu_reg, volt, tol);
if (ret) {
pr_err("failed to scale voltage down: %d\n", ret);
@@ -174,29 +174,17 @@ static struct cpufreq_driver cpu0_cpufreq_driver = {
static int cpu0_cpufreq_probe(struct platform_device *pdev)
{
- struct device_node *np, *parent;
+ struct device_node *np;
int ret;
- parent = of_find_node_by_path("/cpus");
- if (!parent) {
- pr_err("failed to find OF /cpus\n");
- return -ENOENT;
- }
-
- for_each_child_of_node(parent, np) {
- if (of_get_property(np, "operating-points", NULL))
- break;
- }
+ cpu_dev = &pdev->dev;
+ np = of_node_get(cpu_dev->of_node);
if (!np) {
pr_err("failed to find cpu0 node\n");
- ret = -ENOENT;
- goto out_put_parent;
+ return -ENOENT;
}
- cpu_dev = &pdev->dev;
- cpu_dev->of_node = np;
-
cpu_reg = devm_regulator_get_optional(cpu_dev, "cpu0");
if (IS_ERR(cpu_reg)) {
/*
@@ -210,7 +198,6 @@ static int cpu0_cpufreq_probe(struct platform_device *pdev)
}
pr_warn("failed to get cpu0 regulator: %ld\n",
PTR_ERR(cpu_reg));
- cpu_reg = NULL;
}
cpu_clk = devm_clk_get(cpu_dev, NULL);
@@ -269,15 +256,12 @@ static int cpu0_cpufreq_probe(struct platform_device *pdev)
}
of_node_put(np);
- of_node_put(parent);
return 0;
out_free_table:
opp_free_cpufreq_table(cpu_dev, &freq_table);
out_put_node:
of_node_put(np);
-out_put_parent:
- of_node_put(parent);
return ret;
}
diff --git a/drivers/cpufreq/cpufreq-nforce2.c b/drivers/cpufreq/cpufreq-nforce2.c
index af1542d41440..b83d45f68574 100644
--- a/drivers/cpufreq/cpufreq-nforce2.c
+++ b/drivers/cpufreq/cpufreq-nforce2.c
@@ -379,7 +379,6 @@ static struct cpufreq_driver nforce2_driver = {
.get = nforce2_get,
.init = nforce2_cpu_init,
.exit = nforce2_cpu_exit,
- .owner = THIS_MODULE,
};
#ifdef MODULE
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index f0a5e2b0eb8a..5c75e3147a60 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -17,24 +17,17 @@
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-#include <asm/cputime.h>
-#include <linux/kernel.h>
-#include <linux/kernel_stat.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/notifier.h>
+#include <linux/cpu.h>
#include <linux/cpufreq.h>
#include <linux/delay.h>
-#include <linux/interrupt.h>
-#include <linux/spinlock.h>
-#include <linux/tick.h>
#include <linux/device.h>
-#include <linux/slab.h>
-#include <linux/cpu.h>
-#include <linux/completion.h>
+#include <linux/init.h>
+#include <linux/kernel_stat.h>
+#include <linux/module.h>
#include <linux/mutex.h>
+#include <linux/slab.h>
#include <linux/syscore_ops.h>
-
+#include <linux/tick.h>
#include <trace/events/power.h>
/**
@@ -44,8 +37,10 @@
*/
static struct cpufreq_driver *cpufreq_driver;
static DEFINE_PER_CPU(struct cpufreq_policy *, cpufreq_cpu_data);
+static DEFINE_PER_CPU(struct cpufreq_policy *, cpufreq_cpu_data_fallback);
static DEFINE_RWLOCK(cpufreq_driver_lock);
static DEFINE_MUTEX(cpufreq_governor_lock);
+static LIST_HEAD(cpufreq_policy_list);
#ifdef CONFIG_HOTPLUG_CPU
/* This one keeps track of the previously set governor of a removed CPU */
@@ -69,15 +64,14 @@ static DEFINE_PER_CPU(char[CPUFREQ_NAME_LEN], cpufreq_cpu_governor);
* - Lock should not be held across
* __cpufreq_governor(data, CPUFREQ_GOV_STOP);
*/
-static DEFINE_PER_CPU(int, cpufreq_policy_cpu);
static DEFINE_PER_CPU(struct rw_semaphore, cpu_policy_rwsem);
#define lock_policy_rwsem(mode, cpu) \
static int lock_policy_rwsem_##mode(int cpu) \
{ \
- int policy_cpu = per_cpu(cpufreq_policy_cpu, cpu); \
- BUG_ON(policy_cpu == -1); \
- down_##mode(&per_cpu(cpu_policy_rwsem, policy_cpu)); \
+ struct cpufreq_policy *policy = per_cpu(cpufreq_cpu_data, cpu); \
+ BUG_ON(!policy); \
+ down_##mode(&per_cpu(cpu_policy_rwsem, policy->cpu)); \
\
return 0; \
}
@@ -88,14 +82,20 @@ lock_policy_rwsem(write, cpu);
#define unlock_policy_rwsem(mode, cpu) \
static void unlock_policy_rwsem_##mode(int cpu) \
{ \
- int policy_cpu = per_cpu(cpufreq_policy_cpu, cpu); \
- BUG_ON(policy_cpu == -1); \
- up_##mode(&per_cpu(cpu_policy_rwsem, policy_cpu)); \
+ struct cpufreq_policy *policy = per_cpu(cpufreq_cpu_data, cpu); \
+ BUG_ON(!policy); \
+ up_##mode(&per_cpu(cpu_policy_rwsem, policy->cpu)); \
}
unlock_policy_rwsem(read, cpu);
unlock_policy_rwsem(write, cpu);
+/*
+ * rwsem to guarantee that cpufreq driver module doesn't unload during critical
+ * sections
+ */
+static DECLARE_RWSEM(cpufreq_rwsem);
+
/* internal prototypes */
static int __cpufreq_governor(struct cpufreq_policy *policy,
unsigned int event);
@@ -183,78 +183,46 @@ u64 get_cpu_idle_time(unsigned int cpu, u64 *wall, int io_busy)
}
EXPORT_SYMBOL_GPL(get_cpu_idle_time);
-static struct cpufreq_policy *__cpufreq_cpu_get(unsigned int cpu, bool sysfs)
+struct cpufreq_policy *cpufreq_cpu_get(unsigned int cpu)
{
- struct cpufreq_policy *data;
+ struct cpufreq_policy *policy = NULL;
unsigned long flags;
- if (cpu >= nr_cpu_ids)
- goto err_out;
+ if (cpufreq_disabled() || (cpu >= nr_cpu_ids))
+ return NULL;
+
+ if (!down_read_trylock(&cpufreq_rwsem))
+ return NULL;
/* get the cpufreq driver */
read_lock_irqsave(&cpufreq_driver_lock, flags);
- if (!cpufreq_driver)
- goto err_out_unlock;
-
- if (!try_module_get(cpufreq_driver->owner))
- goto err_out_unlock;
-
- /* get the CPU */
- data = per_cpu(cpufreq_cpu_data, cpu);
-
- if (!data)
- goto err_out_put_module;
-
- if (!sysfs && !kobject_get(&data->kobj))
- goto err_out_put_module;
+ if (cpufreq_driver) {
+ /* get the CPU */
+ policy = per_cpu(cpufreq_cpu_data, cpu);
+ if (policy)
+ kobject_get(&policy->kobj);
+ }
read_unlock_irqrestore(&cpufreq_driver_lock, flags);
- return data;
-err_out_put_module:
- module_put(cpufreq_driver->owner);
-err_out_unlock:
- read_unlock_irqrestore(&cpufreq_driver_lock, flags);
-err_out:
- return NULL;
-}
-
-struct cpufreq_policy *cpufreq_cpu_get(unsigned int cpu)
-{
- if (cpufreq_disabled())
- return NULL;
+ if (!policy)
+ up_read(&cpufreq_rwsem);
- return __cpufreq_cpu_get(cpu, false);
+ return policy;
}
EXPORT_SYMBOL_GPL(cpufreq_cpu_get);
-static struct cpufreq_policy *cpufreq_cpu_get_sysfs(unsigned int cpu)
-{
- return __cpufreq_cpu_get(cpu, true);
-}
-
-static void __cpufreq_cpu_put(struct cpufreq_policy *data, bool sysfs)
-{
- if (!sysfs)
- kobject_put(&data->kobj);
- module_put(cpufreq_driver->owner);
-}
-
-void cpufreq_cpu_put(struct cpufreq_policy *data)
+void cpufreq_cpu_put(struct cpufreq_policy *policy)
{
if (cpufreq_disabled())
return;
- __cpufreq_cpu_put(data, false);
+ kobject_put(&policy->kobj);
+ up_read(&cpufreq_rwsem);
}
EXPORT_SYMBOL_GPL(cpufreq_cpu_put);
-static void cpufreq_cpu_put_sysfs(struct cpufreq_policy *data)
-{
- __cpufreq_cpu_put(data, true);
-}
-
/*********************************************************************
* EXTERNALLY AFFECTING FREQUENCY CHANGES *
*********************************************************************/
@@ -459,8 +427,8 @@ show_one(scaling_min_freq, min);
show_one(scaling_max_freq, max);
show_one(scaling_cur_freq, cur);
-static int __cpufreq_set_policy(struct cpufreq_policy *data,
- struct cpufreq_policy *policy);
+static int __cpufreq_set_policy(struct cpufreq_policy *policy,
+ struct cpufreq_policy *new_policy);
/**
* cpufreq_per_cpu_attr_write() / store_##file_name() - sysfs write access
@@ -699,12 +667,12 @@ static ssize_t show(struct kobject *kobj, struct attribute *attr, char *buf)
struct cpufreq_policy *policy = to_policy(kobj);
struct freq_attr *fattr = to_attr(attr);
ssize_t ret = -EINVAL;
- policy = cpufreq_cpu_get_sysfs(policy->cpu);
- if (!policy)
- goto no_policy;
+
+ if (!down_read_trylock(&cpufreq_rwsem))
+ goto exit;
if (lock_policy_rwsem_read(policy->cpu) < 0)
- goto fail;
+ goto up_read;
if (fattr->show)
ret = fattr->show(policy, buf);
@@ -712,9 +680,10 @@ static ssize_t show(struct kobject *kobj, struct attribute *attr, char *buf)
ret = -EIO;
unlock_policy_rwsem_read(policy->cpu);
-fail:
- cpufreq_cpu_put_sysfs(policy);
-no_policy:
+
+up_read:
+ up_read(&cpufreq_rwsem);
+exit:
return ret;
}
@@ -724,12 +693,12 @@ static ssize_t store(struct kobject *kobj, struct attribute *attr,
struct cpufreq_policy *policy = to_policy(kobj);
struct freq_attr *fattr = to_attr(attr);
ssize_t ret = -EINVAL;
- policy = cpufreq_cpu_get_sysfs(policy->cpu);
- if (!policy)
- goto no_policy;
+
+ if (!down_read_trylock(&cpufreq_rwsem))
+ goto exit;
if (lock_policy_rwsem_write(policy->cpu) < 0)
- goto fail;
+ goto up_read;
if (fattr->store)
ret = fattr->store(policy, buf, count);
@@ -737,9 +706,10 @@ static ssize_t store(struct kobject *kobj, struct attribute *attr,
ret = -EIO;
unlock_policy_rwsem_write(policy->cpu);
-fail:
- cpufreq_cpu_put_sysfs(policy);
-no_policy:
+
+up_read:
+ up_read(&cpufreq_rwsem);
+exit:
return ret;
}
@@ -805,41 +775,32 @@ void cpufreq_sysfs_remove_file(const struct attribute *attr)
EXPORT_SYMBOL(cpufreq_sysfs_remove_file);
/* symlink affected CPUs */
-static int cpufreq_add_dev_symlink(unsigned int cpu,
- struct cpufreq_policy *policy)
+static int cpufreq_add_dev_symlink(struct cpufreq_policy *policy)
{
unsigned int j;
int ret = 0;
for_each_cpu(j, policy->cpus) {
- struct cpufreq_policy *managed_policy;
struct device *cpu_dev;
- if (j == cpu)
+ if (j == policy->cpu)
continue;
- pr_debug("CPU %u already managed, adding link\n", j);
- managed_policy = cpufreq_cpu_get(cpu);
+ pr_debug("Adding link for CPU: %u\n", j);
cpu_dev = get_cpu_device(j);
ret = sysfs_create_link(&cpu_dev->kobj, &policy->kobj,
"cpufreq");
- if (ret) {
- cpufreq_cpu_put(managed_policy);
- return ret;
- }
+ if (ret)
+ break;
}
return ret;
}
-static int cpufreq_add_dev_interface(unsigned int cpu,
- struct cpufreq_policy *policy,
+static int cpufreq_add_dev_interface(struct cpufreq_policy *policy,
struct device *dev)
{
- struct cpufreq_policy new_policy;
struct freq_attr **drv_attr;
- unsigned long flags;
int ret = 0;
- unsigned int j;
/* prepare interface data */
ret = kobject_init_and_add(&policy->kobj, &ktype_cpufreq,
@@ -871,18 +832,24 @@ static int cpufreq_add_dev_interface(unsigned int cpu,
goto err_out_kobj_put;
}
- write_lock_irqsave(&cpufreq_driver_lock, flags);
- for_each_cpu(j, policy->cpus) {
- per_cpu(cpufreq_cpu_data, j) = policy;
- per_cpu(cpufreq_policy_cpu, j) = policy->cpu;
- }
- write_unlock_irqrestore(&cpufreq_driver_lock, flags);
-
- ret = cpufreq_add_dev_symlink(cpu, policy);
+ ret = cpufreq_add_dev_symlink(policy);
if (ret)
goto err_out_kobj_put;
- memcpy(&new_policy, policy, sizeof(struct cpufreq_policy));
+ return ret;
+
+err_out_kobj_put:
+ kobject_put(&policy->kobj);
+ wait_for_completion(&policy->kobj_unregister);
+ return ret;
+}
+
+static void cpufreq_init_policy(struct cpufreq_policy *policy)
+{
+ struct cpufreq_policy new_policy;
+ int ret = 0;
+
+ memcpy(&new_policy, policy, sizeof(*policy));
/* assure that the starting sequence is run in __cpufreq_set_policy */
policy->governor = NULL;
@@ -896,72 +863,106 @@ static int cpufreq_add_dev_interface(unsigned int cpu,
if (cpufreq_driver->exit)
cpufreq_driver->exit(policy);
}
- return ret;
-
-err_out_kobj_put:
- kobject_put(&policy->kobj);
- wait_for_completion(&policy->kobj_unregister);
- return ret;
}
#ifdef CONFIG_HOTPLUG_CPU
-static int cpufreq_add_policy_cpu(unsigned int cpu, unsigned int sibling,
- struct device *dev)
+static int cpufreq_add_policy_cpu(struct cpufreq_policy *policy,
+ unsigned int cpu, struct device *dev,
+ bool frozen)
{
- struct cpufreq_policy *policy;
int ret = 0, has_target = !!cpufreq_driver->target;
unsigned long flags;
- policy = cpufreq_cpu_get(sibling);
- WARN_ON(!policy);
-
- if (has_target)
- __cpufreq_governor(policy, CPUFREQ_GOV_STOP);
+ if (has_target) {
+ ret = __cpufreq_governor(policy, CPUFREQ_GOV_STOP);
+ if (ret) {
+ pr_err("%s: Failed to stop governor\n", __func__);
+ return ret;
+ }
+ }
- lock_policy_rwsem_write(sibling);
+ lock_policy_rwsem_write(policy->cpu);
write_lock_irqsave(&cpufreq_driver_lock, flags);
cpumask_set_cpu(cpu, policy->cpus);
- per_cpu(cpufreq_policy_cpu, cpu) = policy->cpu;
per_cpu(cpufreq_cpu_data, cpu) = policy;
write_unlock_irqrestore(&cpufreq_driver_lock, flags);
- unlock_policy_rwsem_write(sibling);
+ unlock_policy_rwsem_write(policy->cpu);
if (has_target) {
- __cpufreq_governor(policy, CPUFREQ_GOV_START);
- __cpufreq_governor(policy, CPUFREQ_GOV_LIMITS);
+ if ((ret = __cpufreq_governor(policy, CPUFREQ_GOV_START)) ||
+ (ret = __cpufreq_governor(policy, CPUFREQ_GOV_LIMITS))) {
+ pr_err("%s: Failed to start governor\n", __func__);
+ return ret;
+ }
}
- ret = sysfs_create_link(&dev->kobj, &policy->kobj, "cpufreq");
- if (ret) {
- cpufreq_cpu_put(policy);
- return ret;
- }
+ /* Don't touch sysfs links during light-weight init */
+ if (!frozen)
+ ret = sysfs_create_link(&dev->kobj, &policy->kobj, "cpufreq");
- return 0;
+ return ret;
}
#endif
-/**
- * cpufreq_add_dev - add a CPU device
- *
- * Adds the cpufreq interface for a CPU device.
- *
- * The Oracle says: try running cpufreq registration/unregistration concurrently
- * with with cpu hotplugging and all hell will break loose. Tried to clean this
- * mess up, but more thorough testing is needed. - Mathieu
- */
-static int cpufreq_add_dev(struct device *dev, struct subsys_interface *sif)
+static struct cpufreq_policy *cpufreq_policy_restore(unsigned int cpu)
+{
+ struct cpufreq_policy *policy;
+ unsigned long flags;
+
+ write_lock_irqsave(&cpufreq_driver_lock, flags);
+
+ policy = per_cpu(cpufreq_cpu_data_fallback, cpu);
+
+ write_unlock_irqrestore(&cpufreq_driver_lock, flags);
+
+ return policy;
+}
+
+static struct cpufreq_policy *cpufreq_policy_alloc(void)
+{
+ struct cpufreq_policy *policy;
+
+ policy = kzalloc(sizeof(*policy), GFP_KERNEL);
+ if (!policy)
+ return NULL;
+
+ if (!alloc_cpumask_var(&policy->cpus, GFP_KERNEL))
+ goto err_free_policy;
+
+ if (!zalloc_cpumask_var(&policy->related_cpus, GFP_KERNEL))
+ goto err_free_cpumask;
+
+ INIT_LIST_HEAD(&policy->policy_list);
+ return policy;
+
+err_free_cpumask:
+ free_cpumask_var(policy->cpus);
+err_free_policy:
+ kfree(policy);
+
+ return NULL;
+}
+
+static void cpufreq_policy_free(struct cpufreq_policy *policy)
+{
+ free_cpumask_var(policy->related_cpus);
+ free_cpumask_var(policy->cpus);
+ kfree(policy);
+}
+
+static int __cpufreq_add_dev(struct device *dev, struct subsys_interface *sif,
+ bool frozen)
{
unsigned int j, cpu = dev->id;
int ret = -ENOMEM;
struct cpufreq_policy *policy;
unsigned long flags;
#ifdef CONFIG_HOTPLUG_CPU
+ struct cpufreq_policy *tpolicy;
struct cpufreq_governor *gov;
- int sibling;
#endif
if (cpu_is_offline(cpu))
@@ -977,43 +978,38 @@ static int cpufreq_add_dev(struct device *dev, struct subsys_interface *sif)
cpufreq_cpu_put(policy);
return 0;
}
+#endif
+
+ if (!down_read_trylock(&cpufreq_rwsem))
+ return 0;
#ifdef CONFIG_HOTPLUG_CPU
/* Check if this cpu was hot-unplugged earlier and has siblings */
read_lock_irqsave(&cpufreq_driver_lock, flags);
- for_each_online_cpu(sibling) {
- struct cpufreq_policy *cp = per_cpu(cpufreq_cpu_data, sibling);
- if (cp && cpumask_test_cpu(cpu, cp->related_cpus)) {
+ list_for_each_entry(tpolicy, &cpufreq_policy_list, policy_list) {
+ if (cpumask_test_cpu(cpu, tpolicy->related_cpus)) {
read_unlock_irqrestore(&cpufreq_driver_lock, flags);
- return cpufreq_add_policy_cpu(cpu, sibling, dev);
+ ret = cpufreq_add_policy_cpu(tpolicy, cpu, dev, frozen);
+ up_read(&cpufreq_rwsem);
+ return ret;
}
}
read_unlock_irqrestore(&cpufreq_driver_lock, flags);
#endif
-#endif
- if (!try_module_get(cpufreq_driver->owner)) {
- ret = -EINVAL;
- goto module_out;
- }
+ if (frozen)
+ /* Restore the saved policy when doing light-weight init */
+ policy = cpufreq_policy_restore(cpu);
+ else
+ policy = cpufreq_policy_alloc();
- policy = kzalloc(sizeof(struct cpufreq_policy), GFP_KERNEL);
if (!policy)
goto nomem_out;
- if (!alloc_cpumask_var(&policy->cpus, GFP_KERNEL))
- goto err_free_policy;
-
- if (!zalloc_cpumask_var(&policy->related_cpus, GFP_KERNEL))
- goto err_free_cpumask;
-
policy->cpu = cpu;
policy->governor = CPUFREQ_DEFAULT_GOVERNOR;
cpumask_copy(policy->cpus, cpumask_of(cpu));
- /* Initially set CPU itself as the policy_cpu */
- per_cpu(cpufreq_policy_cpu, cpu) = cpu;
-
init_completion(&policy->kobj_unregister);
INIT_WORK(&policy->update, handle_update);
@@ -1050,12 +1046,26 @@ static int cpufreq_add_dev(struct device *dev, struct subsys_interface *sif)
}
#endif
- ret = cpufreq_add_dev_interface(cpu, policy, dev);
- if (ret)
- goto err_out_unregister;
+ write_lock_irqsave(&cpufreq_driver_lock, flags);
+ for_each_cpu(j, policy->cpus)
+ per_cpu(cpufreq_cpu_data, j) = policy;
+ write_unlock_irqrestore(&cpufreq_driver_lock, flags);
+
+ if (!frozen) {
+ ret = cpufreq_add_dev_interface(policy, dev);
+ if (ret)
+ goto err_out_unregister;
+ }
+
+ write_lock_irqsave(&cpufreq_driver_lock, flags);
+ list_add(&policy->policy_list, &cpufreq_policy_list);
+ write_unlock_irqrestore(&cpufreq_driver_lock, flags);
+
+ cpufreq_init_policy(policy);
kobject_uevent(&policy->kobj, KOBJ_ADD);
- module_put(cpufreq_driver->owner);
+ up_read(&cpufreq_rwsem);
+
pr_debug("initialization complete\n");
return 0;
@@ -1066,32 +1076,33 @@ err_out_unregister:
per_cpu(cpufreq_cpu_data, j) = NULL;
write_unlock_irqrestore(&cpufreq_driver_lock, flags);
- kobject_put(&policy->kobj);
- wait_for_completion(&policy->kobj_unregister);
-
err_set_policy_cpu:
- per_cpu(cpufreq_policy_cpu, cpu) = -1;
- free_cpumask_var(policy->related_cpus);
-err_free_cpumask:
- free_cpumask_var(policy->cpus);
-err_free_policy:
- kfree(policy);
+ cpufreq_policy_free(policy);
nomem_out:
- module_put(cpufreq_driver->owner);
-module_out:
+ up_read(&cpufreq_rwsem);
+
return ret;
}
-static void update_policy_cpu(struct cpufreq_policy *policy, unsigned int cpu)
+/**
+ * cpufreq_add_dev - add a CPU device
+ *
+ * Adds the cpufreq interface for a CPU device.
+ *
+ * The Oracle says: try running cpufreq registration/unregistration concurrently
+ * with with cpu hotplugging and all hell will break loose. Tried to clean this
+ * mess up, but more thorough testing is needed. - Mathieu
+ */
+static int cpufreq_add_dev(struct device *dev, struct subsys_interface *sif)
{
- int j;
+ return __cpufreq_add_dev(dev, sif, false);
+}
+static void update_policy_cpu(struct cpufreq_policy *policy, unsigned int cpu)
+{
policy->last_cpu = policy->cpu;
policy->cpu = cpu;
- for_each_cpu(j, policy->cpus)
- per_cpu(cpufreq_policy_cpu, j) = cpu;
-
#ifdef CONFIG_CPU_FREQ_TABLE
cpufreq_frequency_table_update_policy_cpu(policy);
#endif
@@ -1099,6 +1110,37 @@ static void update_policy_cpu(struct cpufreq_policy *policy, unsigned int cpu)
CPUFREQ_UPDATE_POLICY_CPU, policy);
}
+static int cpufreq_nominate_new_policy_cpu(struct cpufreq_policy *policy,
+ unsigned int old_cpu, bool frozen)
+{
+ struct device *cpu_dev;
+ int ret;
+
+ /* first sibling now owns the new sysfs dir */
+ cpu_dev = get_cpu_device(cpumask_first(policy->cpus));
+
+ /* Don't touch sysfs files during light-weight tear-down */
+ if (frozen)
+ return cpu_dev->id;
+
+ sysfs_remove_link(&cpu_dev->kobj, "cpufreq");
+ ret = kobject_move(&policy->kobj, &cpu_dev->kobj);
+ if (ret) {
+ pr_err("%s: Failed to move kobj: %d", __func__, ret);
+
+ WARN_ON(lock_policy_rwsem_write(old_cpu));
+ cpumask_set_cpu(old_cpu, policy->cpus);
+ unlock_policy_rwsem_write(old_cpu);
+
+ ret = sysfs_create_link(&cpu_dev->kobj, &policy->kobj,
+ "cpufreq");
+
+ return -EINVAL;
+ }
+
+ return cpu_dev->id;
+}
+
/**
* __cpufreq_remove_dev - remove a CPU device
*
@@ -1107,111 +1149,126 @@ static void update_policy_cpu(struct cpufreq_policy *policy, unsigned int cpu)
* This routine frees the rwsem before returning.
*/
static int __cpufreq_remove_dev(struct device *dev,
- struct subsys_interface *sif)
+ struct subsys_interface *sif, bool frozen)
{
- unsigned int cpu = dev->id, ret, cpus;
+ unsigned int cpu = dev->id, cpus;
+ int new_cpu, ret;
unsigned long flags;
- struct cpufreq_policy *data;
+ struct cpufreq_policy *policy;
struct kobject *kobj;
struct completion *cmp;
- struct device *cpu_dev;
pr_debug("%s: unregistering CPU %u\n", __func__, cpu);
write_lock_irqsave(&cpufreq_driver_lock, flags);
- data = per_cpu(cpufreq_cpu_data, cpu);
- per_cpu(cpufreq_cpu_data, cpu) = NULL;
+ policy = per_cpu(cpufreq_cpu_data, cpu);
+
+ /* Save the policy somewhere when doing a light-weight tear-down */
+ if (frozen)
+ per_cpu(cpufreq_cpu_data_fallback, cpu) = policy;
write_unlock_irqrestore(&cpufreq_driver_lock, flags);
- if (!data) {
+ if (!policy) {
pr_debug("%s: No cpu_data found\n", __func__);
return -EINVAL;
}
- if (cpufreq_driver->target)
- __cpufreq_governor(data, CPUFREQ_GOV_STOP);
+ if (cpufreq_driver->target) {
+ ret = __cpufreq_governor(policy, CPUFREQ_GOV_STOP);
+ if (ret) {
+ pr_err("%s: Failed to stop governor\n", __func__);
+ return ret;
+ }
+ }
#ifdef CONFIG_HOTPLUG_CPU
if (!cpufreq_driver->setpolicy)
strncpy(per_cpu(cpufreq_cpu_governor, cpu),
- data->governor->name, CPUFREQ_NAME_LEN);
+ policy->governor->name, CPUFREQ_NAME_LEN);
#endif
WARN_ON(lock_policy_rwsem_write(cpu));
- cpus = cpumask_weight(data->cpus);
+ cpus = cpumask_weight(policy->cpus);
if (cpus > 1)
- cpumask_clear_cpu(cpu, data->cpus);
+ cpumask_clear_cpu(cpu, policy->cpus);
unlock_policy_rwsem_write(cpu);
- if (cpu != data->cpu) {
+ if (cpu != policy->cpu && !frozen) {
sysfs_remove_link(&dev->kobj, "cpufreq");
} else if (cpus > 1) {
- /* first sibling now owns the new sysfs dir */
- cpu_dev = get_cpu_device(cpumask_first(data->cpus));
- sysfs_remove_link(&cpu_dev->kobj, "cpufreq");
- ret = kobject_move(&data->kobj, &cpu_dev->kobj);
- if (ret) {
- pr_err("%s: Failed to move kobj: %d", __func__, ret);
+ new_cpu = cpufreq_nominate_new_policy_cpu(policy, cpu, frozen);
+ if (new_cpu >= 0) {
WARN_ON(lock_policy_rwsem_write(cpu));
- cpumask_set_cpu(cpu, data->cpus);
-
- write_lock_irqsave(&cpufreq_driver_lock, flags);
- per_cpu(cpufreq_cpu_data, cpu) = data;
- write_unlock_irqrestore(&cpufreq_driver_lock, flags);
-
+ update_policy_cpu(policy, new_cpu);
unlock_policy_rwsem_write(cpu);
- ret = sysfs_create_link(&cpu_dev->kobj, &data->kobj,
- "cpufreq");
- return -EINVAL;
+ if (!frozen) {
+ pr_debug("%s: policy Kobject moved to cpu: %d "
+ "from: %d\n",__func__, new_cpu, cpu);
+ }
}
-
- WARN_ON(lock_policy_rwsem_write(cpu));
- update_policy_cpu(data, cpu_dev->id);
- unlock_policy_rwsem_write(cpu);
- pr_debug("%s: policy Kobject moved to cpu: %d from: %d\n",
- __func__, cpu_dev->id, cpu);
}
/* If cpu is last user of policy, free policy */
if (cpus == 1) {
- if (cpufreq_driver->target)
- __cpufreq_governor(data, CPUFREQ_GOV_POLICY_EXIT);
-
- lock_policy_rwsem_read(cpu);
- kobj = &data->kobj;
- cmp = &data->kobj_unregister;
- unlock_policy_rwsem_read(cpu);
- kobject_put(kobj);
-
- /* we need to make sure that the underlying kobj is actually
- * not referenced anymore by anybody before we proceed with
- * unloading.
- */
- pr_debug("waiting for dropping of refcount\n");
- wait_for_completion(cmp);
- pr_debug("wait complete\n");
+ if (cpufreq_driver->target) {
+ ret = __cpufreq_governor(policy,
+ CPUFREQ_GOV_POLICY_EXIT);
+ if (ret) {
+ pr_err("%s: Failed to exit governor\n",
+ __func__);
+ return ret;
+ }
+ }
+
+ if (!frozen) {
+ lock_policy_rwsem_read(cpu);
+ kobj = &policy->kobj;
+ cmp = &policy->kobj_unregister;
+ unlock_policy_rwsem_read(cpu);
+ kobject_put(kobj);
+
+ /*
+ * We need to make sure that the underlying kobj is
+ * actually not referenced anymore by anybody before we
+ * proceed with unloading.
+ */
+ pr_debug("waiting for dropping of refcount\n");
+ wait_for_completion(cmp);
+ pr_debug("wait complete\n");
+ }
+ /*
+ * Perform the ->exit() even during light-weight tear-down,
+ * since this is a core component, and is essential for the
+ * subsequent light-weight ->init() to succeed.
+ */
if (cpufreq_driver->exit)
- cpufreq_driver->exit(data);
+ cpufreq_driver->exit(policy);
- free_cpumask_var(data->related_cpus);
- free_cpumask_var(data->cpus);
- kfree(data);
+ /* Remove policy from list of active policies */
+ write_lock_irqsave(&cpufreq_driver_lock, flags);
+ list_del(&policy->policy_list);
+ write_unlock_irqrestore(&cpufreq_driver_lock, flags);
+
+ if (!frozen)
+ cpufreq_policy_free(policy);
} else {
- pr_debug("%s: removing link, cpu: %d\n", __func__, cpu);
- cpufreq_cpu_put(data);
if (cpufreq_driver->target) {
- __cpufreq_governor(data, CPUFREQ_GOV_START);
- __cpufreq_governor(data, CPUFREQ_GOV_LIMITS);
+ if ((ret = __cpufreq_governor(policy, CPUFREQ_GOV_START)) ||
+ (ret = __cpufreq_governor(policy, CPUFREQ_GOV_LIMITS))) {
+ pr_err("%s: Failed to start governor\n",
+ __func__);
+ return ret;
+ }
}
}
- per_cpu(cpufreq_policy_cpu, cpu) = -1;
+ per_cpu(cpufreq_cpu_data, cpu) = NULL;
return 0;
}
@@ -1223,7 +1280,7 @@ static int cpufreq_remove_dev(struct device *dev, struct subsys_interface *sif)
if (cpu_is_offline(cpu))
return 0;
- retval = __cpufreq_remove_dev(dev, sif);
+ retval = __cpufreq_remove_dev(dev, sif, false);
return retval;
}
@@ -1344,10 +1401,9 @@ static unsigned int __cpufreq_get(unsigned int cpu)
unsigned int cpufreq_get(unsigned int cpu)
{
unsigned int ret_freq = 0;
- struct cpufreq_policy *policy = cpufreq_cpu_get(cpu);
- if (!policy)
- goto out;
+ if (!down_read_trylock(&cpufreq_rwsem))
+ return 0;
if (unlikely(lock_policy_rwsem_read(cpu)))
goto out_policy;
@@ -1357,8 +1413,8 @@ unsigned int cpufreq_get(unsigned int cpu)
unlock_policy_rwsem_read(cpu);
out_policy:
- cpufreq_cpu_put(policy);
-out:
+ up_read(&cpufreq_rwsem);
+
return ret_freq;
}
EXPORT_SYMBOL(cpufreq_get);
@@ -1381,23 +1437,23 @@ static int cpufreq_bp_suspend(void)
int ret = 0;
int cpu = smp_processor_id();
- struct cpufreq_policy *cpu_policy;
+ struct cpufreq_policy *policy;
pr_debug("suspending cpu %u\n", cpu);
/* If there's no policy for the boot CPU, we have nothing to do. */
- cpu_policy = cpufreq_cpu_get(cpu);
- if (!cpu_policy)
+ policy = cpufreq_cpu_get(cpu);
+ if (!policy)
return 0;
if (cpufreq_driver->suspend) {
- ret = cpufreq_driver->suspend(cpu_policy);
+ ret = cpufreq_driver->suspend(policy);
if (ret)
printk(KERN_ERR "cpufreq: suspend failed in ->suspend "
- "step on CPU %u\n", cpu_policy->cpu);
+ "step on CPU %u\n", policy->cpu);
}
- cpufreq_cpu_put(cpu_policy);
+ cpufreq_cpu_put(policy);
return ret;
}
@@ -1419,28 +1475,28 @@ static void cpufreq_bp_resume(void)
int ret = 0;
int cpu = smp_processor_id();
- struct cpufreq_policy *cpu_policy;
+ struct cpufreq_policy *policy;
pr_debug("resuming cpu %u\n", cpu);
/* If there's no policy for the boot CPU, we have nothing to do. */
- cpu_policy = cpufreq_cpu_get(cpu);
- if (!cpu_policy)
+ policy = cpufreq_cpu_get(cpu);
+ if (!policy)
return;
if (cpufreq_driver->resume) {
- ret = cpufreq_driver->resume(cpu_policy);
+ ret = cpufreq_driver->resume(policy);
if (ret) {
printk(KERN_ERR "cpufreq: resume failed in ->resume "
- "step on CPU %u\n", cpu_policy->cpu);
+ "step on CPU %u\n", policy->cpu);
goto fail;
}
}
- schedule_work(&cpu_policy->update);
+ schedule_work(&policy->update);
fail:
- cpufreq_cpu_put(cpu_policy);
+ cpufreq_cpu_put(policy);
}
static struct syscore_ops cpufreq_syscore_ops = {
@@ -1594,18 +1650,6 @@ fail:
}
EXPORT_SYMBOL_GPL(cpufreq_driver_target);
-int __cpufreq_driver_getavg(struct cpufreq_policy *policy, unsigned int cpu)
-{
- if (cpufreq_disabled())
- return 0;
-
- if (!cpufreq_driver->getavg)
- return 0;
-
- return cpufreq_driver->getavg(policy, cpu);
-}
-EXPORT_SYMBOL_GPL(__cpufreq_driver_getavg);
-
/*
* when "event" is CPUFREQ_GOV_LIMITS
*/
@@ -1640,8 +1684,9 @@ static int __cpufreq_governor(struct cpufreq_policy *policy,
}
}
- if (!try_module_get(policy->governor->owner))
- return -EINVAL;
+ if (event == CPUFREQ_GOV_POLICY_INIT)
+ if (!try_module_get(policy->governor->owner))
+ return -EINVAL;
pr_debug("__cpufreq_governor for CPU %u, event %u\n",
policy->cpu, event);
@@ -1677,11 +1722,8 @@ static int __cpufreq_governor(struct cpufreq_policy *policy,
mutex_unlock(&cpufreq_governor_lock);
}
- /* we keep one module reference alive for
- each CPU governed by this CPU */
- if ((event != CPUFREQ_GOV_START) || ret)
- module_put(policy->governor->owner);
- if ((event == CPUFREQ_GOV_STOP) && !ret)
+ if (((event == CPUFREQ_GOV_POLICY_INIT) && ret) ||
+ ((event == CPUFREQ_GOV_POLICY_EXIT) && !ret))
module_put(policy->governor->owner);
return ret;
@@ -1761,7 +1803,7 @@ int cpufreq_get_policy(struct cpufreq_policy *policy, unsigned int cpu)
if (!cpu_policy)
return -EINVAL;
- memcpy(policy, cpu_policy, sizeof(struct cpufreq_policy));
+ memcpy(policy, cpu_policy, sizeof(*policy));
cpufreq_cpu_put(cpu_policy);
return 0;
@@ -1772,95 +1814,94 @@ EXPORT_SYMBOL(cpufreq_get_policy);
* data : current policy.
* policy : policy to be set.
*/
-static int __cpufreq_set_policy(struct cpufreq_policy *data,
- struct cpufreq_policy *policy)
+static int __cpufreq_set_policy(struct cpufreq_policy *policy,
+ struct cpufreq_policy *new_policy)
{
int ret = 0, failed = 1;
- pr_debug("setting new policy for CPU %u: %u - %u kHz\n", policy->cpu,
- policy->min, policy->max);
+ pr_debug("setting new policy for CPU %u: %u - %u kHz\n", new_policy->cpu,
+ new_policy->min, new_policy->max);
- memcpy(&policy->cpuinfo, &data->cpuinfo,
- sizeof(struct cpufreq_cpuinfo));
+ memcpy(&new_policy->cpuinfo, &policy->cpuinfo, sizeof(policy->cpuinfo));
- if (policy->min > data->max || policy->max < data->min) {
+ if (new_policy->min > policy->max || new_policy->max < policy->min) {
ret = -EINVAL;
goto error_out;
}
/* verify the cpu speed can be set within this limit */
- ret = cpufreq_driver->verify(policy);
+ ret = cpufreq_driver->verify(new_policy);
if (ret)
goto error_out;
/* adjust if necessary - all reasons */
blocking_notifier_call_chain(&cpufreq_policy_notifier_list,
- CPUFREQ_ADJUST, policy);
+ CPUFREQ_ADJUST, new_policy);
/* adjust if necessary - hardware incompatibility*/
blocking_notifier_call_chain(&cpufreq_policy_notifier_list,
- CPUFREQ_INCOMPATIBLE, policy);
+ CPUFREQ_INCOMPATIBLE, new_policy);
/*
* verify the cpu speed can be set within this limit, which might be
* different to the first one
*/
- ret = cpufreq_driver->verify(policy);
+ ret = cpufreq_driver->verify(new_policy);
if (ret)
goto error_out;
/* notification of the new policy */
blocking_notifier_call_chain(&cpufreq_policy_notifier_list,
- CPUFREQ_NOTIFY, policy);
+ CPUFREQ_NOTIFY, new_policy);
- data->min = policy->min;
- data->max = policy->max;
+ policy->min = new_policy->min;
+ policy->max = new_policy->max;
pr_debug("new min and max freqs are %u - %u kHz\n",
- data->min, data->max);
+ policy->min, policy->max);
if (cpufreq_driver->setpolicy) {
- data->policy = policy->policy;
+ policy->policy = new_policy->policy;
pr_debug("setting range\n");
- ret = cpufreq_driver->setpolicy(policy);
+ ret = cpufreq_driver->setpolicy(new_policy);
} else {
- if (policy->governor != data->governor) {
+ if (new_policy->governor != policy->governor) {
/* save old, working values */
- struct cpufreq_governor *old_gov = data->governor;
+ struct cpufreq_governor *old_gov = policy->governor;
pr_debug("governor switch\n");
/* end old governor */
- if (data->governor) {
- __cpufreq_governor(data, CPUFREQ_GOV_STOP);
- unlock_policy_rwsem_write(policy->cpu);
- __cpufreq_governor(data,
+ if (policy->governor) {
+ __cpufreq_governor(policy, CPUFREQ_GOV_STOP);
+ unlock_policy_rwsem_write(new_policy->cpu);
+ __cpufreq_governor(policy,
CPUFREQ_GOV_POLICY_EXIT);
- lock_policy_rwsem_write(policy->cpu);
+ lock_policy_rwsem_write(new_policy->cpu);
}
/* start new governor */
- data->governor = policy->governor;
- if (!__cpufreq_governor(data, CPUFREQ_GOV_POLICY_INIT)) {
- if (!__cpufreq_governor(data, CPUFREQ_GOV_START)) {
+ policy->governor = new_policy->governor;
+ if (!__cpufreq_governor(policy, CPUFREQ_GOV_POLICY_INIT)) {
+ if (!__cpufreq_governor(policy, CPUFREQ_GOV_START)) {
failed = 0;
} else {
- unlock_policy_rwsem_write(policy->cpu);
- __cpufreq_governor(data,
+ unlock_policy_rwsem_write(new_policy->cpu);
+ __cpufreq_governor(policy,
CPUFREQ_GOV_POLICY_EXIT);
- lock_policy_rwsem_write(policy->cpu);
+ lock_policy_rwsem_write(new_policy->cpu);
}
}
if (failed) {
/* new governor failed, so re-start old one */
pr_debug("starting governor %s failed\n",
- data->governor->name);
+ policy->governor->name);
if (old_gov) {
- data->governor = old_gov;
- __cpufreq_governor(data,
+ policy->governor = old_gov;
+ __cpufreq_governor(policy,
CPUFREQ_GOV_POLICY_INIT);
- __cpufreq_governor(data,
+ __cpufreq_governor(policy,
CPUFREQ_GOV_START);
}
ret = -EINVAL;
@@ -1869,7 +1910,7 @@ static int __cpufreq_set_policy(struct cpufreq_policy *data,
/* might be a policy change, too, so fall through */
}
pr_debug("governor: change or update limits\n");
- __cpufreq_governor(data, CPUFREQ_GOV_LIMITS);
+ ret = __cpufreq_governor(policy, CPUFREQ_GOV_LIMITS);
}
error_out:
@@ -1885,11 +1926,11 @@ error_out:
*/
int cpufreq_update_policy(unsigned int cpu)
{
- struct cpufreq_policy *data = cpufreq_cpu_get(cpu);
- struct cpufreq_policy policy;
+ struct cpufreq_policy *policy = cpufreq_cpu_get(cpu);
+ struct cpufreq_policy new_policy;
int ret;
- if (!data) {
+ if (!policy) {
ret = -ENODEV;
goto no_policy;
}
@@ -1900,34 +1941,34 @@ int cpufreq_update_policy(unsigned int cpu)
}
pr_debug("updating policy for CPU %u\n", cpu);
- memcpy(&policy, data, sizeof(struct cpufreq_policy));
- policy.min = data->user_policy.min;
- policy.max = data->user_policy.max;
- policy.policy = data->user_policy.policy;
- policy.governor = data->user_policy.governor;
+ memcpy(&new_policy, policy, sizeof(*policy));
+ new_policy.min = policy->user_policy.min;
+ new_policy.max = policy->user_policy.max;
+ new_policy.policy = policy->user_policy.policy;
+ new_policy.governor = policy->user_policy.governor;
/*
* BIOS might change freq behind our back
* -> ask driver for current freq and notify governors about a change
*/
if (cpufreq_driver->get) {
- policy.cur = cpufreq_driver->get(cpu);
- if (!data->cur) {
+ new_policy.cur = cpufreq_driver->get(cpu);
+ if (!policy->cur) {
pr_debug("Driver did not initialize current freq");
- data->cur = policy.cur;
+ policy->cur = new_policy.cur;
} else {
- if (data->cur != policy.cur && cpufreq_driver->target)
- cpufreq_out_of_sync(cpu, data->cur,
- policy.cur);
+ if (policy->cur != new_policy.cur && cpufreq_driver->target)
+ cpufreq_out_of_sync(cpu, policy->cur,
+ new_policy.cur);
}
}
- ret = __cpufreq_set_policy(data, &policy);
+ ret = __cpufreq_set_policy(policy, &new_policy);
unlock_policy_rwsem_write(cpu);
fail:
- cpufreq_cpu_put(data);
+ cpufreq_cpu_put(policy);
no_policy:
return ret;
}
@@ -1938,21 +1979,26 @@ static int cpufreq_cpu_callback(struct notifier_block *nfb,
{
unsigned int cpu = (unsigned long)hcpu;
struct device *dev;
+ bool frozen = false;
dev = get_cpu_device(cpu);
if (dev) {
- switch (action) {
+
+ if (action & CPU_TASKS_FROZEN)
+ frozen = true;
+
+ switch (action & ~CPU_TASKS_FROZEN) {
case CPU_ONLINE:
- case CPU_ONLINE_FROZEN:
- cpufreq_add_dev(dev, NULL);
+ __cpufreq_add_dev(dev, NULL, frozen);
+ cpufreq_update_policy(cpu);
break;
+
case CPU_DOWN_PREPARE:
- case CPU_DOWN_PREPARE_FROZEN:
- __cpufreq_remove_dev(dev, NULL);
+ __cpufreq_remove_dev(dev, NULL, frozen);
break;
+
case CPU_DOWN_FAILED:
- case CPU_DOWN_FAILED_FROZEN:
- cpufreq_add_dev(dev, NULL);
+ __cpufreq_add_dev(dev, NULL, frozen);
break;
}
}
@@ -2059,9 +2105,13 @@ int cpufreq_unregister_driver(struct cpufreq_driver *driver)
subsys_interface_unregister(&cpufreq_interface);
unregister_hotcpu_notifier(&cpufreq_cpu_notifier);
+ down_write(&cpufreq_rwsem);
write_lock_irqsave(&cpufreq_driver_lock, flags);
+
cpufreq_driver = NULL;
+
write_unlock_irqrestore(&cpufreq_driver_lock, flags);
+ up_write(&cpufreq_rwsem);
return 0;
}
@@ -2074,10 +2124,8 @@ static int __init cpufreq_core_init(void)
if (cpufreq_disabled())
return -ENODEV;
- for_each_possible_cpu(cpu) {
- per_cpu(cpufreq_policy_cpu, cpu) = -1;
+ for_each_possible_cpu(cpu)
init_rwsem(&per_cpu(cpu_policy_rwsem, cpu));
- }
cpufreq_global_kobject = kobject_create();
BUG_ON(!cpufreq_global_kobject);
diff --git a/drivers/cpufreq/cpufreq_conservative.c b/drivers/cpufreq/cpufreq_conservative.c
index f97cb3d8c5a2..f62d822048e6 100644
--- a/drivers/cpufreq/cpufreq_conservative.c
+++ b/drivers/cpufreq/cpufreq_conservative.c
@@ -11,19 +11,7 @@
* published by the Free Software Foundation.
*/
-#include <linux/cpufreq.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/kernel_stat.h>
-#include <linux/kobject.h>
-#include <linux/module.h>
-#include <linux/mutex.h>
-#include <linux/notifier.h>
-#include <linux/percpu-defs.h>
#include <linux/slab.h>
-#include <linux/sysfs.h>
-#include <linux/types.h>
-
#include "cpufreq_governor.h"
/* Conservative governor macros */
@@ -79,8 +67,6 @@ static void cs_check_cpu(int cpu, unsigned int load)
return;
dbs_info->requested_freq += get_freq_target(cs_tuners, policy);
- if (dbs_info->requested_freq > policy->max)
- dbs_info->requested_freq = policy->max;
__cpufreq_driver_target(policy, dbs_info->requested_freq,
CPUFREQ_RELATION_H);
@@ -101,8 +87,6 @@ static void cs_check_cpu(int cpu, unsigned int load)
return;
dbs_info->requested_freq -= get_freq_target(cs_tuners, policy);
- if (dbs_info->requested_freq < policy->min)
- dbs_info->requested_freq = policy->min;
__cpufreq_driver_target(policy, dbs_info->requested_freq,
CPUFREQ_RELATION_L);
@@ -329,7 +313,7 @@ static int cs_init(struct dbs_data *dbs_data)
{
struct cs_dbs_tuners *tuners;
- tuners = kzalloc(sizeof(struct cs_dbs_tuners), GFP_KERNEL);
+ tuners = kzalloc(sizeof(*tuners), GFP_KERNEL);
if (!tuners) {
pr_err("%s: kzalloc failed\n", __func__);
return -ENOMEM;
diff --git a/drivers/cpufreq/cpufreq_governor.c b/drivers/cpufreq/cpufreq_governor.c
index e59afaa9da23..0806c31e5764 100644
--- a/drivers/cpufreq/cpufreq_governor.c
+++ b/drivers/cpufreq/cpufreq_governor.c
@@ -16,15 +16,9 @@
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-#include <asm/cputime.h>
-#include <linux/cpufreq.h>
-#include <linux/cpumask.h>
#include <linux/export.h>
#include <linux/kernel_stat.h>
-#include <linux/mutex.h>
#include <linux/slab.h>
-#include <linux/types.h>
-#include <linux/workqueue.h>
#include "cpufreq_governor.h"
@@ -53,7 +47,7 @@ void dbs_check_cpu(struct dbs_data *dbs_data, int cpu)
policy = cdbs->cur_policy;
- /* Get Absolute Load (in terms of freq for ondemand gov) */
+ /* Get Absolute Load */
for_each_cpu(j, policy->cpus) {
struct cpu_dbs_common_info *j_cdbs;
u64 cur_wall_time, cur_idle_time;
@@ -104,14 +98,6 @@ void dbs_check_cpu(struct dbs_data *dbs_data, int cpu)
load = 100 * (wall_time - idle_time) / wall_time;
- if (dbs_data->cdata->governor == GOV_ONDEMAND) {
- int freq_avg = __cpufreq_driver_getavg(policy, j);
- if (freq_avg <= 0)
- freq_avg = policy->cur;
-
- load *= freq_avg;
- }
-
if (load > max_load)
max_load = load;
}
@@ -133,8 +119,18 @@ void gov_queue_work(struct dbs_data *dbs_data, struct cpufreq_policy *policy,
{
int i;
+ if (!policy->governor_enabled)
+ return;
+
if (!all_cpus) {
- __gov_queue_work(smp_processor_id(), dbs_data, delay);
+ /*
+ * Use raw_smp_processor_id() to avoid preemptible warnings.
+ * We know that this is only called with all_cpus == false from
+ * works that have been queued with *_work_on() functions and
+ * those works are canceled during CPU_DOWN_PREPARE so they
+ * can't possibly run on any other CPU.
+ */
+ __gov_queue_work(raw_smp_processor_id(), dbs_data, delay);
} else {
for_each_cpu(i, policy->cpus)
__gov_queue_work(i, dbs_data, delay);
@@ -244,7 +240,7 @@ int cpufreq_governor_dbs(struct cpufreq_policy *policy,
policy->governor_data = dbs_data;
- /* policy latency is in nS. Convert it to uS first */
+ /* policy latency is in ns. Convert it to us first */
latency = policy->cpuinfo.transition_latency / 1000;
if (latency == 0)
latency = 1;
diff --git a/drivers/cpufreq/cpufreq_governor.h b/drivers/cpufreq/cpufreq_governor.h
index d5f12b4b11b8..88cd39f7b0e9 100644
--- a/drivers/cpufreq/cpufreq_governor.h
+++ b/drivers/cpufreq/cpufreq_governor.h
@@ -18,19 +18,18 @@
#define _CPUFREQ_GOVERNOR_H
#include <linux/cpufreq.h>
-#include <linux/kobject.h>
+#include <linux/kernel_stat.h>
+#include <linux/module.h>
#include <linux/mutex.h>
-#include <linux/workqueue.h>
-#include <linux/sysfs.h>
/*
* The polling frequency depends on the capability of the processor. Default
* polling frequency is 1000 times the transition latency of the processor. The
- * governor will work on any processor with transition latency <= 10mS, using
+ * governor will work on any processor with transition latency <= 10ms, using
* appropriate sampling rate.
*
- * For CPUs with transition latency > 10mS (mostly drivers with CPUFREQ_ETERNAL)
- * this governor will not work. All times here are in uS.
+ * For CPUs with transition latency > 10ms (mostly drivers with CPUFREQ_ETERNAL)
+ * this governor will not work. All times here are in us (micro seconds).
*/
#define MIN_SAMPLING_RATE_RATIO (2)
#define LATENCY_MULTIPLIER (1000)
@@ -163,13 +162,12 @@ struct cs_cpu_dbs_info_s {
unsigned int enable:1;
};
-/* Per policy Governers sysfs tunables */
+/* Per policy Governors sysfs tunables */
struct od_dbs_tuners {
unsigned int ignore_nice_load;
unsigned int sampling_rate;
unsigned int sampling_down_factor;
unsigned int up_threshold;
- unsigned int adj_up_threshold;
unsigned int powersave_bias;
unsigned int io_is_busy;
};
@@ -183,7 +181,7 @@ struct cs_dbs_tuners {
unsigned int freq_step;
};
-/* Common Governer data across policies */
+/* Common Governor data across policies */
struct dbs_data;
struct common_dbs_data {
/* Common across governors */
@@ -207,7 +205,7 @@ struct common_dbs_data {
void *gov_ops;
};
-/* Governer Per policy data */
+/* Governor Per policy data */
struct dbs_data {
struct common_dbs_data *cdata;
unsigned int min_sampling_rate;
@@ -223,7 +221,7 @@ struct od_ops {
void (*powersave_bias_init_cpu)(int cpu);
unsigned int (*powersave_bias_target)(struct cpufreq_policy *policy,
unsigned int freq_next, unsigned int relation);
- void (*freq_increase)(struct cpufreq_policy *p, unsigned int freq);
+ void (*freq_increase)(struct cpufreq_policy *policy, unsigned int freq);
};
struct cs_ops {
diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c
index c087347d6688..32f26f6e17c5 100644
--- a/drivers/cpufreq/cpufreq_ondemand.c
+++ b/drivers/cpufreq/cpufreq_ondemand.c
@@ -12,28 +12,16 @@
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-#include <linux/cpufreq.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/kernel_stat.h>
-#include <linux/kobject.h>
-#include <linux/module.h>
-#include <linux/mutex.h>
+#include <linux/cpu.h>
#include <linux/percpu-defs.h>
#include <linux/slab.h>
-#include <linux/sysfs.h>
#include <linux/tick.h>
-#include <linux/types.h>
-#include <linux/cpu.h>
-
#include "cpufreq_governor.h"
/* On-demand governor macros */
-#define DEF_FREQUENCY_DOWN_DIFFERENTIAL (10)
#define DEF_FREQUENCY_UP_THRESHOLD (80)
#define DEF_SAMPLING_DOWN_FACTOR (1)
#define MAX_SAMPLING_DOWN_FACTOR (100000)
-#define MICRO_FREQUENCY_DOWN_DIFFERENTIAL (3)
#define MICRO_FREQUENCY_UP_THRESHOLD (95)
#define MICRO_FREQUENCY_MIN_SAMPLE_RATE (10000)
#define MIN_FREQUENCY_UP_THRESHOLD (11)
@@ -144,31 +132,27 @@ static void ondemand_powersave_bias_init(void)
}
}
-static void dbs_freq_increase(struct cpufreq_policy *p, unsigned int freq)
+static void dbs_freq_increase(struct cpufreq_policy *policy, unsigned int freq)
{
- struct dbs_data *dbs_data = p->governor_data;
+ struct dbs_data *dbs_data = policy->governor_data;
struct od_dbs_tuners *od_tuners = dbs_data->tuners;
if (od_tuners->powersave_bias)
- freq = od_ops.powersave_bias_target(p, freq,
+ freq = od_ops.powersave_bias_target(policy, freq,
CPUFREQ_RELATION_H);
- else if (p->cur == p->max)
+ else if (policy->cur == policy->max)
return;
- __cpufreq_driver_target(p, freq, od_tuners->powersave_bias ?
+ __cpufreq_driver_target(policy, freq, od_tuners->powersave_bias ?
CPUFREQ_RELATION_L : CPUFREQ_RELATION_H);
}
/*
* Every sampling_rate, we check, if current idle time is less than 20%
- * (default), then we try to increase frequency. Every sampling_rate, we look
- * for the lowest frequency which can sustain the load while keeping idle time
- * over 30%. If such a frequency exist, we try to decrease to this frequency.
- *
- * Any frequency increase takes it to the maximum frequency. Frequency reduction
- * happens at minimum steps of 5% (default) of current frequency
+ * (default), then we try to increase frequency. Else, we adjust the frequency
+ * proportional to load.
*/
-static void od_check_cpu(int cpu, unsigned int load_freq)
+static void od_check_cpu(int cpu, unsigned int load)
{
struct od_cpu_dbs_info_s *dbs_info = &per_cpu(od_cpu_dbs_info, cpu);
struct cpufreq_policy *policy = dbs_info->cdbs.cur_policy;
@@ -178,36 +162,21 @@ static void od_check_cpu(int cpu, unsigned int load_freq)
dbs_info->freq_lo = 0;
/* Check for frequency increase */
- if (load_freq > od_tuners->up_threshold * policy->cur) {
+ if (load > od_tuners->up_threshold) {
/* If switching to max speed, apply sampling_down_factor */
if (policy->cur < policy->max)
dbs_info->rate_mult =
od_tuners->sampling_down_factor;
dbs_freq_increase(policy, policy->max);
return;
- }
-
- /* Check for frequency decrease */
- /* if we cannot reduce the frequency anymore, break out early */
- if (policy->cur == policy->min)
- return;
-
- /*
- * The optimal frequency is the frequency that is the lowest that can
- * support the current CPU usage without triggering the up policy. To be
- * safe, we focus 10 points under the threshold.
- */
- if (load_freq < od_tuners->adj_up_threshold
- * policy->cur) {
+ } else {
+ /* Calculate the next frequency proportional to load */
unsigned int freq_next;
- freq_next = load_freq / od_tuners->adj_up_threshold;
+ freq_next = load * policy->cpuinfo.max_freq / 100;
/* No longer fully busy, reset rate_mult */
dbs_info->rate_mult = 1;
- if (freq_next < policy->min)
- freq_next = policy->min;
-
if (!od_tuners->powersave_bias) {
__cpufreq_driver_target(policy, freq_next,
CPUFREQ_RELATION_L);
@@ -374,9 +343,6 @@ static ssize_t store_up_threshold(struct dbs_data *dbs_data, const char *buf,
input < MIN_FREQUENCY_UP_THRESHOLD) {
return -EINVAL;
}
- /* Calculate the new adj_up_threshold */
- od_tuners->adj_up_threshold += input;
- od_tuners->adj_up_threshold -= od_tuners->up_threshold;
od_tuners->up_threshold = input;
return count;
@@ -513,7 +479,7 @@ static int od_init(struct dbs_data *dbs_data)
u64 idle_time;
int cpu;
- tuners = kzalloc(sizeof(struct od_dbs_tuners), GFP_KERNEL);
+ tuners = kzalloc(sizeof(*tuners), GFP_KERNEL);
if (!tuners) {
pr_err("%s: kzalloc failed\n", __func__);
return -ENOMEM;
@@ -525,8 +491,6 @@ static int od_init(struct dbs_data *dbs_data)
if (idle_time != -1ULL) {
/* Idle micro accounting is supported. Use finer thresholds */
tuners->up_threshold = MICRO_FREQUENCY_UP_THRESHOLD;
- tuners->adj_up_threshold = MICRO_FREQUENCY_UP_THRESHOLD -
- MICRO_FREQUENCY_DOWN_DIFFERENTIAL;
/*
* In nohz/micro accounting case we set the minimum frequency
* not depending on HZ, but fixed (very low). The deferred
@@ -535,8 +499,6 @@ static int od_init(struct dbs_data *dbs_data)
dbs_data->min_sampling_rate = MICRO_FREQUENCY_MIN_SAMPLE_RATE;
} else {
tuners->up_threshold = DEF_FREQUENCY_UP_THRESHOLD;
- tuners->adj_up_threshold = DEF_FREQUENCY_UP_THRESHOLD -
- DEF_FREQUENCY_DOWN_DIFFERENTIAL;
/* For correct statistics, we need 10 ticks for each measure */
dbs_data->min_sampling_rate = MIN_SAMPLING_RATE_RATIO *
diff --git a/drivers/cpufreq/cpufreq_performance.c b/drivers/cpufreq/cpufreq_performance.c
index 9fef7d6e4e6a..cf117deb39b1 100644
--- a/drivers/cpufreq/cpufreq_performance.c
+++ b/drivers/cpufreq/cpufreq_performance.c
@@ -12,10 +12,9 @@
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-#include <linux/kernel.h>
-#include <linux/module.h>
#include <linux/cpufreq.h>
#include <linux/init.h>
+#include <linux/module.h>
static int cpufreq_governor_performance(struct cpufreq_policy *policy,
unsigned int event)
diff --git a/drivers/cpufreq/cpufreq_powersave.c b/drivers/cpufreq/cpufreq_powersave.c
index 32109a14f5dc..e3b874c235ea 100644
--- a/drivers/cpufreq/cpufreq_powersave.c
+++ b/drivers/cpufreq/cpufreq_powersave.c
@@ -12,10 +12,9 @@
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-#include <linux/kernel.h>
-#include <linux/module.h>
#include <linux/cpufreq.h>
#include <linux/init.h>
+#include <linux/module.h>
static int cpufreq_governor_powersave(struct cpufreq_policy *policy,
unsigned int event)
diff --git a/drivers/cpufreq/cpufreq_stats.c b/drivers/cpufreq/cpufreq_stats.c
index d37568c5ca9c..04452f026ed0 100644
--- a/drivers/cpufreq/cpufreq_stats.c
+++ b/drivers/cpufreq/cpufreq_stats.c
@@ -9,17 +9,10 @@
* published by the Free Software Foundation.
*/
-#include <linux/kernel.h>
-#include <linux/slab.h>
#include <linux/cpu.h>
-#include <linux/sysfs.h>
#include <linux/cpufreq.h>
#include <linux/module.h>
-#include <linux/jiffies.h>
-#include <linux/percpu.h>
-#include <linux/kobject.h>
-#include <linux/spinlock.h>
-#include <linux/notifier.h>
+#include <linux/slab.h>
#include <asm/cputime.h>
static spinlock_t cpufreq_stats_lock;
@@ -200,22 +193,22 @@ static int cpufreq_stats_create_table(struct cpufreq_policy *policy,
{
unsigned int i, j, count = 0, ret = 0;
struct cpufreq_stats *stat;
- struct cpufreq_policy *data;
+ struct cpufreq_policy *current_policy;
unsigned int alloc_size;
unsigned int cpu = policy->cpu;
if (per_cpu(cpufreq_stats_table, cpu))
return -EBUSY;
- stat = kzalloc(sizeof(struct cpufreq_stats), GFP_KERNEL);
+ stat = kzalloc(sizeof(*stat), GFP_KERNEL);
if ((stat) == NULL)
return -ENOMEM;
- data = cpufreq_cpu_get(cpu);
- if (data == NULL) {
+ current_policy = cpufreq_cpu_get(cpu);
+ if (current_policy == NULL) {
ret = -EINVAL;
goto error_get_fail;
}
- ret = sysfs_create_group(&data->kobj, &stats_attr_group);
+ ret = sysfs_create_group(&current_policy->kobj, &stats_attr_group);
if (ret)
goto error_out;
@@ -258,10 +251,10 @@ static int cpufreq_stats_create_table(struct cpufreq_policy *policy,
stat->last_time = get_jiffies_64();
stat->last_index = freq_table_get_index(stat, policy->cur);
spin_unlock(&cpufreq_stats_lock);
- cpufreq_cpu_put(data);
+ cpufreq_cpu_put(current_policy);
return 0;
error_out:
- cpufreq_cpu_put(data);
+ cpufreq_cpu_put(current_policy);
error_get_fail:
kfree(stat);
per_cpu(cpufreq_stats_table, cpu) = NULL;
@@ -348,16 +341,10 @@ static int cpufreq_stat_cpu_callback(struct notifier_block *nfb,
unsigned int cpu = (unsigned long)hcpu;
switch (action) {
- case CPU_ONLINE:
- case CPU_ONLINE_FROZEN:
- cpufreq_update_policy(cpu);
- break;
case CPU_DOWN_PREPARE:
- case CPU_DOWN_PREPARE_FROZEN:
cpufreq_stats_free_sysfs(cpu);
break;
case CPU_DEAD:
- case CPU_DEAD_FROZEN:
cpufreq_stats_free_table(cpu);
break;
}
@@ -390,8 +377,6 @@ static int __init cpufreq_stats_init(void)
return ret;
register_hotcpu_notifier(&cpufreq_stat_cpu_notifier);
- for_each_online_cpu(cpu)
- cpufreq_update_policy(cpu);
ret = cpufreq_register_notifier(&notifier_trans_block,
CPUFREQ_TRANSITION_NOTIFIER);
diff --git a/drivers/cpufreq/cris-artpec3-cpufreq.c b/drivers/cpufreq/cris-artpec3-cpufreq.c
index ee142c490575..cb8276dd19ca 100644
--- a/drivers/cpufreq/cris-artpec3-cpufreq.c
+++ b/drivers/cpufreq/cris-artpec3-cpufreq.c
@@ -111,7 +111,6 @@ static struct cpufreq_driver cris_freq_driver = {
.init = cris_freq_cpu_init,
.exit = cris_freq_cpu_exit,
.name = "cris_freq",
- .owner = THIS_MODULE,
.attr = cris_freq_attr,
};
diff --git a/drivers/cpufreq/cris-etraxfs-cpufreq.c b/drivers/cpufreq/cris-etraxfs-cpufreq.c
index 12952235d5db..72328f77dc53 100644
--- a/drivers/cpufreq/cris-etraxfs-cpufreq.c
+++ b/drivers/cpufreq/cris-etraxfs-cpufreq.c
@@ -108,7 +108,6 @@ static struct cpufreq_driver cris_freq_driver = {
.init = cris_freq_cpu_init,
.exit = cris_freq_cpu_exit,
.name = "cris_freq",
- .owner = THIS_MODULE,
.attr = cris_freq_attr,
};
diff --git a/drivers/cpufreq/e_powersaver.c b/drivers/cpufreq/e_powersaver.c
index a60efaeb4cf8..09f64cc83019 100644
--- a/drivers/cpufreq/e_powersaver.c
+++ b/drivers/cpufreq/e_powersaver.c
@@ -54,7 +54,7 @@ static struct acpi_processor_performance *eps_acpi_cpu_perf;
/* Minimum necessary to get acpi_processor_get_bios_limit() working */
static int eps_acpi_init(void)
{
- eps_acpi_cpu_perf = kzalloc(sizeof(struct acpi_processor_performance),
+ eps_acpi_cpu_perf = kzalloc(sizeof(*eps_acpi_cpu_perf),
GFP_KERNEL);
if (!eps_acpi_cpu_perf)
return -ENOMEM;
@@ -366,7 +366,7 @@ static int eps_cpu_init(struct cpufreq_policy *policy)
states = 2;
/* Allocate private data and frequency table for current cpu */
- centaur = kzalloc(sizeof(struct eps_cpu_data)
+ centaur = kzalloc(sizeof(*centaur)
+ (states + 1) * sizeof(struct cpufreq_frequency_table),
GFP_KERNEL);
if (!centaur)
@@ -436,7 +436,6 @@ static struct cpufreq_driver eps_driver = {
.exit = eps_cpu_exit,
.get = eps_get,
.name = "e_powersaver",
- .owner = THIS_MODULE,
.attr = eps_attr,
};
diff --git a/drivers/cpufreq/elanfreq.c b/drivers/cpufreq/elanfreq.c
index 658d860344b0..823a400d98fd 100644
--- a/drivers/cpufreq/elanfreq.c
+++ b/drivers/cpufreq/elanfreq.c
@@ -274,7 +274,6 @@ static struct cpufreq_driver elanfreq_driver = {
.init = elanfreq_cpu_init,
.exit = elanfreq_cpu_exit,
.name = "elanfreq",
- .owner = THIS_MODULE,
.attr = elanfreq_attr,
};
diff --git a/drivers/cpufreq/exynos-cpufreq.c b/drivers/cpufreq/exynos-cpufreq.c
index 0d32f02ef4d6..0fac34439e31 100644
--- a/drivers/cpufreq/exynos-cpufreq.c
+++ b/drivers/cpufreq/exynos-cpufreq.c
@@ -289,7 +289,7 @@ static int __init exynos_cpufreq_init(void)
{
int ret = -EINVAL;
- exynos_info = kzalloc(sizeof(struct exynos_dvfs_info), GFP_KERNEL);
+ exynos_info = kzalloc(sizeof(*exynos_info), GFP_KERNEL);
if (!exynos_info)
return -ENOMEM;
@@ -332,7 +332,6 @@ err_cpufreq:
regulator_put(arm_regulator);
err_vdd_arm:
kfree(exynos_info);
- pr_debug("%s: failed initialization\n", __func__);
return -EINVAL;
}
late_initcall(exynos_cpufreq_init);
diff --git a/drivers/cpufreq/exynos-cpufreq.h b/drivers/cpufreq/exynos-cpufreq.h
index 92b852ee5ddc..7f25cee8cec2 100644
--- a/drivers/cpufreq/exynos-cpufreq.h
+++ b/drivers/cpufreq/exynos-cpufreq.h
@@ -43,6 +43,27 @@ struct exynos_dvfs_info {
bool (*need_apll_change)(unsigned int, unsigned int);
};
+#ifdef CONFIG_ARM_EXYNOS4210_CPUFREQ
extern int exynos4210_cpufreq_init(struct exynos_dvfs_info *);
+#else
+static inline int exynos4210_cpufreq_init(struct exynos_dvfs_info *info)
+{
+ return -EOPNOTSUPP;
+}
+#endif
+#ifdef CONFIG_ARM_EXYNOS4X12_CPUFREQ
extern int exynos4x12_cpufreq_init(struct exynos_dvfs_info *);
+#else
+static inline int exynos4x12_cpufreq_init(struct exynos_dvfs_info *info)
+{
+ return -EOPNOTSUPP;
+}
+#endif
+#ifdef CONFIG_ARM_EXYNOS5250_CPUFREQ
extern int exynos5250_cpufreq_init(struct exynos_dvfs_info *);
+#else
+static inline int exynos5250_cpufreq_init(struct exynos_dvfs_info *info)
+{
+ return -EOPNOTSUPP;
+}
+#endif
diff --git a/drivers/cpufreq/exynos5440-cpufreq.c b/drivers/cpufreq/exynos5440-cpufreq.c
index 0c74018eda47..d514c152fd1a 100644
--- a/drivers/cpufreq/exynos5440-cpufreq.c
+++ b/drivers/cpufreq/exynos5440-cpufreq.c
@@ -238,6 +238,9 @@ static int exynos_target(struct cpufreq_policy *policy,
freqs.old = dvfs_info->cur_frequency;
freqs.new = freq_table[index].frequency;
+ if (freqs.old == freqs.new)
+ goto out;
+
cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE);
/* Set the target frequency in all C0_3_PSTATE register */
diff --git a/drivers/cpufreq/freq_table.c b/drivers/cpufreq/freq_table.c
index f0d87412cc91..f111454a7aea 100644
--- a/drivers/cpufreq/freq_table.c
+++ b/drivers/cpufreq/freq_table.c
@@ -11,10 +11,8 @@
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
#include <linux/cpufreq.h>
+#include <linux/module.h>
/*********************************************************************
* FREQUENCY TABLE HELPERS *
diff --git a/drivers/cpufreq/gx-suspmod.c b/drivers/cpufreq/gx-suspmod.c
index 3dfc99b9ca86..70442c7b5e71 100644
--- a/drivers/cpufreq/gx-suspmod.c
+++ b/drivers/cpufreq/gx-suspmod.c
@@ -183,7 +183,7 @@ static void gx_write_byte(int reg, int value)
* gx_detect_chipset:
*
**/
-static __init struct pci_dev *gx_detect_chipset(void)
+static struct pci_dev * __init gx_detect_chipset(void)
{
struct pci_dev *gx_pci = NULL;
@@ -446,7 +446,6 @@ static struct cpufreq_driver gx_suspmod_driver = {
.target = cpufreq_gx_target,
.init = cpufreq_gx_cpu_init,
.name = "gx-suspmod",
- .owner = THIS_MODULE,
};
static int __init cpufreq_gx_init(void)
@@ -466,7 +465,7 @@ static int __init cpufreq_gx_init(void)
pr_debug("geode suspend modulation available.\n");
- params = kzalloc(sizeof(struct gxfreq_params), GFP_KERNEL);
+ params = kzalloc(sizeof(*params), GFP_KERNEL);
if (params == NULL)
return -ENOMEM;
diff --git a/drivers/cpufreq/highbank-cpufreq.c b/drivers/cpufreq/highbank-cpufreq.c
index b61b5a3fad64..794123fcf3e3 100644
--- a/drivers/cpufreq/highbank-cpufreq.c
+++ b/drivers/cpufreq/highbank-cpufreq.c
@@ -69,23 +69,17 @@ static int hb_cpufreq_driver_init(void)
if (!of_machine_is_compatible("calxeda,highbank"))
return -ENODEV;
- for_each_child_of_node(of_find_node_by_path("/cpus"), np)
- if (of_get_property(np, "operating-points", NULL))
- break;
-
- if (!np) {
- pr_err("failed to find highbank cpufreq node\n");
- return -ENOENT;
- }
-
cpu_dev = get_cpu_device(0);
if (!cpu_dev) {
pr_err("failed to get highbank cpufreq device\n");
- ret = -ENODEV;
- goto out_put_node;
+ return -ENODEV;
}
- cpu_dev->of_node = np;
+ np = of_node_get(cpu_dev->of_node);
+ if (!np) {
+ pr_err("failed to find highbank cpufreq node\n");
+ return -ENOENT;
+ }
cpu_clk = clk_get(cpu_dev, NULL);
if (IS_ERR(cpu_clk)) {
diff --git a/drivers/cpufreq/ia64-acpi-cpufreq.c b/drivers/cpufreq/ia64-acpi-cpufreq.c
index 573c14ea802d..3e14f0317175 100644
--- a/drivers/cpufreq/ia64-acpi-cpufreq.c
+++ b/drivers/cpufreq/ia64-acpi-cpufreq.c
@@ -274,7 +274,7 @@ acpi_cpufreq_cpu_init (
pr_debug("acpi_cpufreq_cpu_init\n");
- data = kzalloc(sizeof(struct cpufreq_acpi_io), GFP_KERNEL);
+ data = kzalloc(sizeof(*data), GFP_KERNEL);
if (!data)
return (-ENOMEM);
@@ -304,7 +304,7 @@ acpi_cpufreq_cpu_init (
}
/* alloc freq_table */
- data->freq_table = kmalloc(sizeof(struct cpufreq_frequency_table) *
+ data->freq_table = kmalloc(sizeof(*data->freq_table) *
(data->acpi_data.state_count + 1),
GFP_KERNEL);
if (!data->freq_table) {
@@ -409,7 +409,6 @@ static struct cpufreq_driver acpi_cpufreq_driver = {
.init = acpi_cpufreq_cpu_init,
.exit = acpi_cpufreq_cpu_exit,
.name = "acpi-cpufreq",
- .owner = THIS_MODULE,
.attr = acpi_cpufreq_attr,
};
diff --git a/drivers/cpufreq/imx6q-cpufreq.c b/drivers/cpufreq/imx6q-cpufreq.c
index e37cdaedbb5b..3e396543aea4 100644
--- a/drivers/cpufreq/imx6q-cpufreq.c
+++ b/drivers/cpufreq/imx6q-cpufreq.c
@@ -117,28 +117,11 @@ static int imx6q_set_target(struct cpufreq_policy *policy,
* - Reprogram pll1_sys_clk and reparent pll1_sw_clk back to it
* - Disable pll2_pfd2_396m_clk
*/
- clk_prepare_enable(pll2_pfd2_396m_clk);
clk_set_parent(step_clk, pll2_pfd2_396m_clk);
clk_set_parent(pll1_sw_clk, step_clk);
if (freq_hz > clk_get_rate(pll2_pfd2_396m_clk)) {
clk_set_rate(pll1_sys_clk, freqs.new * 1000);
- /*
- * If we are leaving 396 MHz set-point, we need to enable
- * pll1_sys_clk and disable pll2_pfd2_396m_clk to keep
- * their use count correct.
- */
- if (freqs.old * 1000 <= clk_get_rate(pll2_pfd2_396m_clk)) {
- clk_prepare_enable(pll1_sys_clk);
- clk_disable_unprepare(pll2_pfd2_396m_clk);
- }
clk_set_parent(pll1_sw_clk, pll1_sys_clk);
- clk_disable_unprepare(pll2_pfd2_396m_clk);
- } else {
- /*
- * Disable pll1_sys_clk if pll2_pfd2_396m_clk is sufficient
- * to provide the frequency.
- */
- clk_disable_unprepare(pll1_sys_clk);
}
/* Ensure the arm clock divider is what we expect */
@@ -221,14 +204,12 @@ static int imx6q_cpufreq_probe(struct platform_device *pdev)
cpu_dev = &pdev->dev;
- np = of_find_node_by_path("/cpus/cpu@0");
+ np = of_node_get(cpu_dev->of_node);
if (!np) {
dev_err(cpu_dev, "failed to find cpu0 node\n");
return -ENOENT;
}
- cpu_dev->of_node = np;
-
arm_clk = devm_clk_get(cpu_dev, "arm");
pll1_sys_clk = devm_clk_get(cpu_dev, "pll1_sys");
pll1_sw_clk = devm_clk_get(cpu_dev, "pll1_sw");
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index 7cde885011ed..6efd96c196b2 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -665,7 +665,6 @@ static struct cpufreq_driver intel_pstate_driver = {
.init = intel_pstate_cpu_init,
.exit = intel_pstate_cpu_exit,
.name = "intel_pstate",
- .owner = THIS_MODULE,
};
static int __initdata no_load;
diff --git a/drivers/cpufreq/kirkwood-cpufreq.c b/drivers/cpufreq/kirkwood-cpufreq.c
index c233ea617366..ba10658a9394 100644
--- a/drivers/cpufreq/kirkwood-cpufreq.c
+++ b/drivers/cpufreq/kirkwood-cpufreq.c
@@ -14,7 +14,7 @@
#include <linux/clk.h>
#include <linux/clk-provider.h>
#include <linux/cpufreq.h>
-#include <linux/of.h>
+#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <asm/proc-fns.h>
@@ -158,7 +158,6 @@ static struct cpufreq_driver kirkwood_cpufreq_driver = {
.init = kirkwood_cpufreq_cpu_init,
.exit = kirkwood_cpufreq_cpu_exit,
.name = "kirkwood-cpufreq",
- .owner = THIS_MODULE,
.attr = kirkwood_cpufreq_attr,
};
@@ -175,9 +174,11 @@ static int kirkwood_cpufreq_probe(struct platform_device *pdev)
if (IS_ERR(priv.base))
return PTR_ERR(priv.base);
- np = of_find_node_by_path("/cpus/cpu@0");
- if (!np)
+ np = of_cpu_device_node_get(0);
+ if (!np) {
+ dev_err(&pdev->dev, "failed to get cpu device node\n");
return -ENODEV;
+ }
priv.cpu_clk = of_clk_get_by_name(np, "cpu_clk");
if (IS_ERR(priv.cpu_clk)) {
diff --git a/drivers/cpufreq/longhaul.c b/drivers/cpufreq/longhaul.c
index 8c49261df57d..4ada1cccb052 100644
--- a/drivers/cpufreq/longhaul.c
+++ b/drivers/cpufreq/longhaul.c
@@ -948,7 +948,6 @@ static struct cpufreq_driver longhaul_driver = {
.init = longhaul_cpu_init,
.exit = longhaul_cpu_exit,
.name = "longhaul",
- .owner = THIS_MODULE,
.attr = longhaul_attr,
};
diff --git a/drivers/cpufreq/longrun.c b/drivers/cpufreq/longrun.c
index 0fe041d1f77f..5aa031612d53 100644
--- a/drivers/cpufreq/longrun.c
+++ b/drivers/cpufreq/longrun.c
@@ -286,7 +286,6 @@ static struct cpufreq_driver longrun_driver = {
.get = longrun_get,
.init = longrun_cpu_init,
.name = "longrun",
- .owner = THIS_MODULE,
};
static const struct x86_cpu_id longrun_ids[] = {
diff --git a/drivers/cpufreq/loongson2_cpufreq.c b/drivers/cpufreq/loongson2_cpufreq.c
index 9536852c504a..7bc3c44d34e2 100644
--- a/drivers/cpufreq/loongson2_cpufreq.c
+++ b/drivers/cpufreq/loongson2_cpufreq.c
@@ -158,7 +158,6 @@ static struct freq_attr *loongson2_table_attr[] = {
};
static struct cpufreq_driver loongson2_cpufreq_driver = {
- .owner = THIS_MODULE,
.name = "loongson2",
.init = loongson2_cpufreq_cpu_init,
.verify = loongson2_cpufreq_verify,
diff --git a/drivers/cpufreq/maple-cpufreq.c b/drivers/cpufreq/maple-cpufreq.c
index cdd62915efaf..6168d77b296d 100644
--- a/drivers/cpufreq/maple-cpufreq.c
+++ b/drivers/cpufreq/maple-cpufreq.c
@@ -24,7 +24,7 @@
#include <linux/completion.h>
#include <linux/mutex.h>
#include <linux/time.h>
-#include <linux/of.h>
+#include <linux/of_device.h>
#define DBG(fmt...) pr_debug(fmt)
@@ -190,7 +190,6 @@ static int maple_cpufreq_cpu_init(struct cpufreq_policy *policy)
static struct cpufreq_driver maple_cpufreq_driver = {
.name = "maple",
- .owner = THIS_MODULE,
.flags = CPUFREQ_CONST_LOOPS,
.init = maple_cpufreq_cpu_init,
.verify = maple_cpufreq_verify,
@@ -201,7 +200,6 @@ static struct cpufreq_driver maple_cpufreq_driver = {
static int __init maple_cpufreq_init(void)
{
- struct device_node *cpus;
struct device_node *cpunode;
unsigned int psize;
unsigned long max_freq;
@@ -217,24 +215,11 @@ static int __init maple_cpufreq_init(void)
!of_machine_is_compatible("Momentum,Apache"))
return 0;
- cpus = of_find_node_by_path("/cpus");
- if (cpus == NULL) {
- DBG("No /cpus node !\n");
- return -ENODEV;
- }
-
/* Get first CPU node */
- for (cpunode = NULL;
- (cpunode = of_get_next_child(cpus, cpunode)) != NULL;) {
- const u32 *reg = of_get_property(cpunode, "reg", NULL);
- if (reg == NULL || (*reg) != 0)
- continue;
- if (!strcmp(cpunode->type, "cpu"))
- break;
- }
+ cpunode = of_cpu_device_node_get(0);
if (cpunode == NULL) {
printk(KERN_ERR "cpufreq: Can't find any CPU 0 node\n");
- goto bail_cpus;
+ goto bail_noprops;
}
/* Check 970FX for now */
@@ -290,14 +275,11 @@ static int __init maple_cpufreq_init(void)
rc = cpufreq_register_driver(&maple_cpufreq_driver);
of_node_put(cpunode);
- of_node_put(cpus);
return rc;
bail_noprops:
of_node_put(cpunode);
-bail_cpus:
- of_node_put(cpus);
return rc;
}
diff --git a/drivers/cpufreq/mperf.c b/drivers/cpufreq/mperf.c
deleted file mode 100644
index 911e193018ae..000000000000
--- a/drivers/cpufreq/mperf.c
+++ /dev/null
@@ -1,51 +0,0 @@
-#include <linux/kernel.h>
-#include <linux/smp.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/cpufreq.h>
-#include <linux/slab.h>
-
-#include "mperf.h"
-
-static DEFINE_PER_CPU(struct aperfmperf, acfreq_old_perf);
-
-/* Called via smp_call_function_single(), on the target CPU */
-static void read_measured_perf_ctrs(void *_cur)
-{
- struct aperfmperf *am = _cur;
-
- get_aperfmperf(am);
-}
-
-/*
- * Return the measured active (C0) frequency on this CPU since last call
- * to this function.
- * Input: cpu number
- * Return: Average CPU frequency in terms of max frequency (zero on error)
- *
- * We use IA32_MPERF and IA32_APERF MSRs to get the measured performance
- * over a period of time, while CPU is in C0 state.
- * IA32_MPERF counts at the rate of max advertised frequency
- * IA32_APERF counts at the rate of actual CPU frequency
- * Only IA32_APERF/IA32_MPERF ratio is architecturally defined and
- * no meaning should be associated with absolute values of these MSRs.
- */
-unsigned int cpufreq_get_measured_perf(struct cpufreq_policy *policy,
- unsigned int cpu)
-{
- struct aperfmperf perf;
- unsigned long ratio;
- unsigned int retval;
-
- if (smp_call_function_single(cpu, read_measured_perf_ctrs, &perf, 1))
- return 0;
-
- ratio = calc_aperfmperf_ratio(&per_cpu(acfreq_old_perf, cpu), &perf);
- per_cpu(acfreq_old_perf, cpu) = perf;
-
- retval = (policy->cpuinfo.max_freq * ratio) >> APERFMPERF_SHIFT;
-
- return retval;
-}
-EXPORT_SYMBOL_GPL(cpufreq_get_measured_perf);
-MODULE_LICENSE("GPL");
diff --git a/drivers/cpufreq/mperf.h b/drivers/cpufreq/mperf.h
deleted file mode 100644
index 5dbf2950dc22..000000000000
--- a/drivers/cpufreq/mperf.h
+++ /dev/null
@@ -1,9 +0,0 @@
-/*
- * (c) 2010 Advanced Micro Devices, Inc.
- * Your use of this code is subject to the terms and conditions of the
- * GNU general public license version 2. See "COPYING" or
- * http://www.gnu.org/licenses/gpl.html
- */
-
-unsigned int cpufreq_get_measured_perf(struct cpufreq_policy *policy,
- unsigned int cpu);
diff --git a/drivers/cpufreq/p4-clockmod.c b/drivers/cpufreq/p4-clockmod.c
index 9ee78170ff86..2f0a2a65c37f 100644
--- a/drivers/cpufreq/p4-clockmod.c
+++ b/drivers/cpufreq/p4-clockmod.c
@@ -279,7 +279,6 @@ static struct cpufreq_driver p4clockmod_driver = {
.exit = cpufreq_p4_cpu_exit,
.get = cpufreq_p4_get,
.name = "p4-clockmod",
- .owner = THIS_MODULE,
.attr = p4clockmod_attr,
};
diff --git a/drivers/cpufreq/pasemi-cpufreq.c b/drivers/cpufreq/pasemi-cpufreq.c
index b704da404067..534e43a60d1f 100644
--- a/drivers/cpufreq/pasemi-cpufreq.c
+++ b/drivers/cpufreq/pasemi-cpufreq.c
@@ -297,7 +297,6 @@ static int pas_cpufreq_target(struct cpufreq_policy *policy,
static struct cpufreq_driver pas_cpufreq_driver = {
.name = "pas-cpufreq",
- .owner = THIS_MODULE,
.flags = CPUFREQ_CONST_LOOPS,
.init = pas_cpufreq_cpu_init,
.exit = pas_cpufreq_cpu_exit,
diff --git a/drivers/cpufreq/pcc-cpufreq.c b/drivers/cpufreq/pcc-cpufreq.c
index 1581fcc4cf4a..d81c4e5ea0ad 100644
--- a/drivers/cpufreq/pcc-cpufreq.c
+++ b/drivers/cpufreq/pcc-cpufreq.c
@@ -587,7 +587,6 @@ static struct cpufreq_driver pcc_cpufreq_driver = {
.init = pcc_cpufreq_cpu_init,
.exit = pcc_cpufreq_cpu_exit,
.name = "pcc-cpufreq",
- .owner = THIS_MODULE,
};
static int __init pcc_cpufreq_init(void)
diff --git a/drivers/cpufreq/pmac32-cpufreq.c b/drivers/cpufreq/pmac32-cpufreq.c
index 3104fad82480..a096cd3fa23d 100644
--- a/drivers/cpufreq/pmac32-cpufreq.c
+++ b/drivers/cpufreq/pmac32-cpufreq.c
@@ -25,6 +25,7 @@
#include <linux/init.h>
#include <linux/device.h>
#include <linux/hardirq.h>
+#include <linux/of_device.h>
#include <asm/prom.h>
#include <asm/machdep.h>
#include <asm/irq.h>
@@ -477,7 +478,6 @@ static struct cpufreq_driver pmac_cpufreq_driver = {
.flags = CPUFREQ_PM_NO_WARN,
.attr = pmac_cpu_freqs_attr,
.name = "powermac",
- .owner = THIS_MODULE,
};
@@ -649,8 +649,8 @@ static int __init pmac_cpufreq_setup(void)
if (strstr(cmd_line, "nocpufreq"))
return 0;
- /* Assume only one CPU */
- cpunode = of_find_node_by_type(NULL, "cpu");
+ /* Get first CPU node */
+ cpunode = of_cpu_device_node_get(0);
if (!cpunode)
goto out;
diff --git a/drivers/cpufreq/pmac64-cpufreq.c b/drivers/cpufreq/pmac64-cpufreq.c
index 7ba423431cfe..3a51ad7e47c8 100644
--- a/drivers/cpufreq/pmac64-cpufreq.c
+++ b/drivers/cpufreq/pmac64-cpufreq.c
@@ -22,6 +22,7 @@
#include <linux/init.h>
#include <linux/completion.h>
#include <linux/mutex.h>
+#include <linux/of_device.h>
#include <asm/prom.h>
#include <asm/machdep.h>
#include <asm/irq.h>
@@ -371,7 +372,6 @@ static int g5_cpufreq_cpu_init(struct cpufreq_policy *policy)
static struct cpufreq_driver g5_cpufreq_driver = {
.name = "powermac",
- .owner = THIS_MODULE,
.flags = CPUFREQ_CONST_LOOPS,
.init = g5_cpufreq_cpu_init,
.verify = g5_cpufreq_verify,
@@ -383,9 +383,8 @@ static struct cpufreq_driver g5_cpufreq_driver = {
#ifdef CONFIG_PMAC_SMU
-static int __init g5_neo2_cpufreq_init(struct device_node *cpus)
+static int __init g5_neo2_cpufreq_init(struct device_node *cpunode)
{
- struct device_node *cpunode;
unsigned int psize, ssize;
unsigned long max_freq;
char *freq_method, *volt_method;
@@ -405,20 +404,6 @@ static int __init g5_neo2_cpufreq_init(struct device_node *cpus)
else
return -ENODEV;
- /* Get first CPU node */
- for (cpunode = NULL;
- (cpunode = of_get_next_child(cpus, cpunode)) != NULL;) {
- const u32 *reg = of_get_property(cpunode, "reg", NULL);
- if (reg == NULL || (*reg) != 0)
- continue;
- if (!strcmp(cpunode->type, "cpu"))
- break;
- }
- if (cpunode == NULL) {
- printk(KERN_ERR "cpufreq: Can't find any CPU 0 node\n");
- return -ENODEV;
- }
-
/* Check 970FX for now */
valp = of_get_property(cpunode, "cpu-version", NULL);
if (!valp) {
@@ -447,9 +432,8 @@ static int __init g5_neo2_cpufreq_init(struct device_node *cpus)
if (!shdr)
goto bail_noprops;
g5_fvt_table = (struct smu_sdbp_fvt *)&shdr[1];
- ssize = (shdr->len * sizeof(u32)) -
- sizeof(struct smu_sdbp_header);
- g5_fvt_count = ssize / sizeof(struct smu_sdbp_fvt);
+ ssize = (shdr->len * sizeof(u32)) - sizeof(*shdr);
+ g5_fvt_count = ssize / sizeof(*g5_fvt_table);
g5_fvt_cur = 0;
/* Sanity checking */
@@ -537,9 +521,9 @@ static int __init g5_neo2_cpufreq_init(struct device_node *cpus)
#endif /* CONFIG_PMAC_SMU */
-static int __init g5_pm72_cpufreq_init(struct device_node *cpus)
+static int __init g5_pm72_cpufreq_init(struct device_node *cpunode)
{
- struct device_node *cpuid = NULL, *hwclock = NULL, *cpunode = NULL;
+ struct device_node *cpuid = NULL, *hwclock = NULL;
const u8 *eeprom = NULL;
const u32 *valp;
u64 max_freq, min_freq, ih, il;
@@ -548,17 +532,6 @@ static int __init g5_pm72_cpufreq_init(struct device_node *cpus)
DBG("cpufreq: Initializing for PowerMac7,2, PowerMac7,3 and"
" RackMac3,1...\n");
- /* Get first CPU node */
- for (cpunode = NULL;
- (cpunode = of_get_next_child(cpus, cpunode)) != NULL;) {
- if (!strcmp(cpunode->type, "cpu"))
- break;
- }
- if (cpunode == NULL) {
- printk(KERN_ERR "cpufreq: Can't find any CPU node\n");
- return -ENODEV;
- }
-
/* Lookup the cpuid eeprom node */
cpuid = of_find_node_by_path("/u3@0,f8000000/i2c@f8001000/cpuid@a0");
if (cpuid != NULL)
@@ -718,25 +691,25 @@ static int __init g5_pm72_cpufreq_init(struct device_node *cpus)
static int __init g5_cpufreq_init(void)
{
- struct device_node *cpus;
+ struct device_node *cpunode;
int rc = 0;
- cpus = of_find_node_by_path("/cpus");
- if (cpus == NULL) {
- DBG("No /cpus node !\n");
+ /* Get first CPU node */
+ cpunode = of_cpu_device_node_get(0);
+ if (cpunode == NULL) {
+ pr_err("cpufreq: Can't find any CPU node\n");
return -ENODEV;
}
if (of_machine_is_compatible("PowerMac7,2") ||
of_machine_is_compatible("PowerMac7,3") ||
of_machine_is_compatible("RackMac3,1"))
- rc = g5_pm72_cpufreq_init(cpus);
+ rc = g5_pm72_cpufreq_init(cpunode);
#ifdef CONFIG_PMAC_SMU
else
- rc = g5_neo2_cpufreq_init(cpus);
+ rc = g5_neo2_cpufreq_init(cpunode);
#endif /* CONFIG_PMAC_SMU */
- of_node_put(cpus);
return rc;
}
diff --git a/drivers/cpufreq/powernow-k6.c b/drivers/cpufreq/powernow-k6.c
index ea8e10382ec5..85f1c8c25ddc 100644
--- a/drivers/cpufreq/powernow-k6.c
+++ b/drivers/cpufreq/powernow-k6.c
@@ -207,7 +207,6 @@ static struct cpufreq_driver powernow_k6_driver = {
.exit = powernow_k6_cpu_exit,
.get = powernow_k6_get,
.name = "powernow-k6",
- .owner = THIS_MODULE,
.attr = powernow_k6_attr,
};
diff --git a/drivers/cpufreq/powernow-k7.c b/drivers/cpufreq/powernow-k7.c
index 955870877935..14ce480be8ab 100644
--- a/drivers/cpufreq/powernow-k7.c
+++ b/drivers/cpufreq/powernow-k7.c
@@ -177,7 +177,7 @@ static int get_ranges(unsigned char *pst)
unsigned int speed;
u8 fid, vid;
- powernow_table = kzalloc((sizeof(struct cpufreq_frequency_table) *
+ powernow_table = kzalloc((sizeof(*powernow_table) *
(number_scales + 1)), GFP_KERNEL);
if (!powernow_table)
return -ENOMEM;
@@ -309,8 +309,7 @@ static int powernow_acpi_init(void)
goto err0;
}
- acpi_processor_perf = kzalloc(sizeof(struct acpi_processor_performance),
- GFP_KERNEL);
+ acpi_processor_perf = kzalloc(sizeof(*acpi_processor_perf), GFP_KERNEL);
if (!acpi_processor_perf) {
retval = -ENOMEM;
goto err0;
@@ -346,7 +345,7 @@ static int powernow_acpi_init(void)
goto err2;
}
- powernow_table = kzalloc((sizeof(struct cpufreq_frequency_table) *
+ powernow_table = kzalloc((sizeof(*powernow_table) *
(number_scales + 1)), GFP_KERNEL);
if (!powernow_table) {
retval = -ENOMEM;
@@ -497,7 +496,7 @@ static int powernow_decode_bios(int maxfid, int startvid)
"relevant to this CPU).\n",
psb->numpst);
- p += sizeof(struct psb_s);
+ p += sizeof(*psb);
pst = (struct pst_s *) p;
@@ -510,12 +509,12 @@ static int powernow_decode_bios(int maxfid, int startvid)
(maxfid == pst->maxfid) &&
(startvid == pst->startvid)) {
print_pst_entry(pst, j);
- p = (char *)pst + sizeof(struct pst_s);
+ p = (char *)pst + sizeof(*pst);
ret = get_ranges(p);
return ret;
} else {
unsigned int k;
- p = (char *)pst + sizeof(struct pst_s);
+ p = (char *)pst + sizeof(*pst);
for (k = 0; k < number_scales; k++)
p += 2;
}
@@ -717,7 +716,6 @@ static struct cpufreq_driver powernow_driver = {
.init = powernow_cpu_init,
.exit = powernow_cpu_exit,
.name = "powernow-k7",
- .owner = THIS_MODULE,
.attr = powernow_table_attr,
};
diff --git a/drivers/cpufreq/powernow-k8.c b/drivers/cpufreq/powernow-k8.c
index c39d189217cb..2344a9ed17f3 100644
--- a/drivers/cpufreq/powernow-k8.c
+++ b/drivers/cpufreq/powernow-k8.c
@@ -623,7 +623,7 @@ static int fill_powernow_table(struct powernow_k8_data *data,
if (check_pst_table(data, pst, maxvid))
return -EINVAL;
- powernow_table = kmalloc((sizeof(struct cpufreq_frequency_table)
+ powernow_table = kmalloc((sizeof(*powernow_table)
* (data->numps + 1)), GFP_KERNEL);
if (!powernow_table) {
printk(KERN_ERR PFX "powernow_table memory alloc failure\n");
@@ -793,7 +793,7 @@ static int powernow_k8_cpu_init_acpi(struct powernow_k8_data *data)
}
/* fill in data->powernow_table */
- powernow_table = kmalloc((sizeof(struct cpufreq_frequency_table)
+ powernow_table = kmalloc((sizeof(*powernow_table)
* (data->acpi_data.state_count + 1)), GFP_KERNEL);
if (!powernow_table) {
pr_debug("powernow_table memory alloc failure\n");
@@ -1106,7 +1106,7 @@ static int powernowk8_cpu_init(struct cpufreq_policy *pol)
if (rc)
return -ENODEV;
- data = kzalloc(sizeof(struct powernow_k8_data), GFP_KERNEL);
+ data = kzalloc(sizeof(*data), GFP_KERNEL);
if (!data) {
printk(KERN_ERR PFX "unable to alloc powernow_k8_data");
return -ENOMEM;
@@ -1240,7 +1240,6 @@ static struct cpufreq_driver cpufreq_amd64_driver = {
.exit = powernowk8_cpu_exit,
.get = powernowk8_get,
.name = "powernow-k8",
- .owner = THIS_MODULE,
.attr = powernow_k8_attr,
};
diff --git a/drivers/cpufreq/ppc-corenet-cpufreq.c b/drivers/cpufreq/ppc-corenet-cpufreq.c
index 3cae4529f959..60e81d524ea8 100644
--- a/drivers/cpufreq/ppc-corenet-cpufreq.c
+++ b/drivers/cpufreq/ppc-corenet-cpufreq.c
@@ -300,7 +300,6 @@ static struct freq_attr *corenet_cpufreq_attr[] = {
static struct cpufreq_driver ppc_corenet_cpufreq_driver = {
.name = "ppc_cpufreq",
- .owner = THIS_MODULE,
.flags = CPUFREQ_CONST_LOOPS,
.init = corenet_cpufreq_cpu_init,
.exit = __exit_p(corenet_cpufreq_cpu_exit),
diff --git a/drivers/cpufreq/ppc_cbe_cpufreq.c b/drivers/cpufreq/ppc_cbe_cpufreq.c
index 5936f8d6f2cc..2e448f0bbdc5 100644
--- a/drivers/cpufreq/ppc_cbe_cpufreq.c
+++ b/drivers/cpufreq/ppc_cbe_cpufreq.c
@@ -181,7 +181,6 @@ static struct cpufreq_driver cbe_cpufreq_driver = {
.init = cbe_cpufreq_cpu_init,
.exit = cbe_cpufreq_cpu_exit,
.name = "cbe-cpufreq",
- .owner = THIS_MODULE,
.flags = CPUFREQ_CONST_LOOPS,
};
diff --git a/drivers/cpufreq/pxa2xx-cpufreq.c b/drivers/cpufreq/pxa2xx-cpufreq.c
index fb3981ac829f..8749eaf18793 100644
--- a/drivers/cpufreq/pxa2xx-cpufreq.c
+++ b/drivers/cpufreq/pxa2xx-cpufreq.c
@@ -191,7 +191,7 @@ static int pxa_cpufreq_change_voltage(pxa_freqs_t *pxa_freq)
return ret;
}
-static __init void pxa_cpufreq_init_voltages(void)
+static void __init pxa_cpufreq_init_voltages(void)
{
vcc_core = regulator_get(NULL, "vcc_core");
if (IS_ERR(vcc_core)) {
@@ -207,7 +207,7 @@ static int pxa_cpufreq_change_voltage(pxa_freqs_t *pxa_freq)
return 0;
}
-static __init void pxa_cpufreq_init_voltages(void) { }
+static void __init pxa_cpufreq_init_voltages(void) { }
#endif
static void find_freq_tables(struct cpufreq_frequency_table **freq_table,
diff --git a/drivers/cpufreq/pxa3xx-cpufreq.c b/drivers/cpufreq/pxa3xx-cpufreq.c
index 9c92ef032a9e..d26306fb00d2 100644
--- a/drivers/cpufreq/pxa3xx-cpufreq.c
+++ b/drivers/cpufreq/pxa3xx-cpufreq.c
@@ -213,10 +213,12 @@ static int pxa3xx_cpufreq_init(struct cpufreq_policy *policy)
policy->cur = policy->min = policy->max;
if (cpu_is_pxa300() || cpu_is_pxa310())
- ret = setup_freqs_table(policy, ARRAY_AND_SIZE(pxa300_freqs));
+ ret = setup_freqs_table(policy, pxa300_freqs,
+ ARRAY_SIZE(pxa300_freqs));
if (cpu_is_pxa320())
- ret = setup_freqs_table(policy, ARRAY_AND_SIZE(pxa320_freqs));
+ ret = setup_freqs_table(policy, pxa320_freqs,
+ ARRAY_SIZE(pxa320_freqs));
if (ret) {
pr_err("failed to setup frequency table\n");
diff --git a/drivers/cpufreq/s3c2416-cpufreq.c b/drivers/cpufreq/s3c2416-cpufreq.c
index ce5b9fca9c18..22dcb81ef9d0 100644
--- a/drivers/cpufreq/s3c2416-cpufreq.c
+++ b/drivers/cpufreq/s3c2416-cpufreq.c
@@ -524,7 +524,6 @@ static struct freq_attr *s3c2416_cpufreq_attr[] = {
};
static struct cpufreq_driver s3c2416_cpufreq_driver = {
- .owner = THIS_MODULE,
.flags = 0,
.verify = s3c2416_cpufreq_verify_speed,
.target = s3c2416_cpufreq_set_target,
diff --git a/drivers/cpufreq/s3c24xx-cpufreq.c b/drivers/cpufreq/s3c24xx-cpufreq.c
index 87781eb20d6d..b0f343fcb7ee 100644
--- a/drivers/cpufreq/s3c24xx-cpufreq.c
+++ b/drivers/cpufreq/s3c24xx-cpufreq.c
@@ -392,7 +392,7 @@ static int s3c_cpufreq_init(struct cpufreq_policy *policy)
return 0;
}
-static __init int s3c_cpufreq_initclks(void)
+static int __init s3c_cpufreq_initclks(void)
{
_clk_mpll = s3c_cpufreq_clk_get(NULL, "mpll");
_clk_xtal = s3c_cpufreq_clk_get(NULL, "xtal");
@@ -522,7 +522,7 @@ int __init s3c_cpufreq_setboard(struct s3c_cpufreq_board *board)
/* Copy the board information so that each board can make this
* initdata. */
- ours = kzalloc(sizeof(struct s3c_cpufreq_board), GFP_KERNEL);
+ ours = kzalloc(sizeof(*ours), GFP_KERNEL);
if (ours == NULL) {
printk(KERN_ERR "%s: no memory\n", __func__);
return -ENOMEM;
@@ -615,7 +615,7 @@ static int s3c_cpufreq_build_freq(void)
size = cpu_cur.info->calc_freqtable(&cpu_cur, NULL, 0);
size++;
- ftab = kmalloc(sizeof(struct cpufreq_frequency_table) * size, GFP_KERNEL);
+ ftab = kmalloc(sizeof(*ftab) * size, GFP_KERNEL);
if (!ftab) {
printk(KERN_ERR "%s: no memory for tables\n", __func__);
return -ENOMEM;
@@ -691,7 +691,7 @@ int __init s3c_plltab_register(struct cpufreq_frequency_table *plls,
struct cpufreq_frequency_table *vals;
unsigned int size;
- size = sizeof(struct cpufreq_frequency_table) * (plls_no + 1);
+ size = sizeof(*vals) * (plls_no + 1);
vals = kmalloc(size, GFP_KERNEL);
if (vals) {
diff --git a/drivers/cpufreq/s3c64xx-cpufreq.c b/drivers/cpufreq/s3c64xx-cpufreq.c
index 13bb4bae64ee..8a72b0c555f8 100644
--- a/drivers/cpufreq/s3c64xx-cpufreq.c
+++ b/drivers/cpufreq/s3c64xx-cpufreq.c
@@ -263,7 +263,6 @@ static int s3c64xx_cpufreq_driver_init(struct cpufreq_policy *policy)
}
static struct cpufreq_driver s3c64xx_cpufreq_driver = {
- .owner = THIS_MODULE,
.flags = 0,
.verify = s3c64xx_cpufreq_verify_speed,
.target = s3c64xx_cpufreq_set_target,
diff --git a/drivers/cpufreq/sc520_freq.c b/drivers/cpufreq/sc520_freq.c
index 77a210975fc4..d6f6c6f4efa7 100644
--- a/drivers/cpufreq/sc520_freq.c
+++ b/drivers/cpufreq/sc520_freq.c
@@ -147,7 +147,6 @@ static struct cpufreq_driver sc520_freq_driver = {
.init = sc520_freq_cpu_init,
.exit = sc520_freq_cpu_exit,
.name = "sc520_freq",
- .owner = THIS_MODULE,
.attr = sc520_freq_attr,
};
diff --git a/drivers/cpufreq/sh-cpufreq.c b/drivers/cpufreq/sh-cpufreq.c
index 73adb64651e8..ffc6d24b0cfb 100644
--- a/drivers/cpufreq/sh-cpufreq.c
+++ b/drivers/cpufreq/sh-cpufreq.c
@@ -160,7 +160,6 @@ static struct freq_attr *sh_freq_attr[] = {
};
static struct cpufreq_driver sh_cpufreq_driver = {
- .owner = THIS_MODULE,
.name = "sh",
.get = sh_cpufreq_get,
.target = sh_cpufreq_target,
diff --git a/drivers/cpufreq/sparc-us2e-cpufreq.c b/drivers/cpufreq/sparc-us2e-cpufreq.c
index 93061a408773..cf5bc2ca16fa 100644
--- a/drivers/cpufreq/sparc-us2e-cpufreq.c
+++ b/drivers/cpufreq/sparc-us2e-cpufreq.c
@@ -351,12 +351,11 @@ static int __init us2e_freq_init(void)
struct cpufreq_driver *driver;
ret = -ENOMEM;
- driver = kzalloc(sizeof(struct cpufreq_driver), GFP_KERNEL);
+ driver = kzalloc(sizeof(*driver), GFP_KERNEL);
if (!driver)
goto err_out;
- us2e_freq_table = kzalloc(
- (NR_CPUS * sizeof(struct us2e_freq_percpu_info)),
+ us2e_freq_table = kzalloc((NR_CPUS * sizeof(*us2e_freq_table)),
GFP_KERNEL);
if (!us2e_freq_table)
goto err_out;
@@ -366,7 +365,6 @@ static int __init us2e_freq_init(void)
driver->target = us2e_freq_target;
driver->get = us2e_freq_get;
driver->exit = us2e_freq_cpu_exit;
- driver->owner = THIS_MODULE,
strcpy(driver->name, "UltraSPARC-IIe");
cpufreq_us2e_driver = driver;
diff --git a/drivers/cpufreq/sparc-us3-cpufreq.c b/drivers/cpufreq/sparc-us3-cpufreq.c
index 880ee293d61e..ac76b489979d 100644
--- a/drivers/cpufreq/sparc-us3-cpufreq.c
+++ b/drivers/cpufreq/sparc-us3-cpufreq.c
@@ -212,12 +212,11 @@ static int __init us3_freq_init(void)
struct cpufreq_driver *driver;
ret = -ENOMEM;
- driver = kzalloc(sizeof(struct cpufreq_driver), GFP_KERNEL);
+ driver = kzalloc(sizeof(*driver), GFP_KERNEL);
if (!driver)
goto err_out;
- us3_freq_table = kzalloc(
- (NR_CPUS * sizeof(struct us3_freq_percpu_info)),
+ us3_freq_table = kzalloc((NR_CPUS * sizeof(*us3_freq_table)),
GFP_KERNEL);
if (!us3_freq_table)
goto err_out;
@@ -227,7 +226,6 @@ static int __init us3_freq_init(void)
driver->target = us3_freq_target;
driver->get = us3_freq_get;
driver->exit = us3_freq_cpu_exit;
- driver->owner = THIS_MODULE,
strcpy(driver->name, "UltraSPARC-III");
cpufreq_us3_driver = driver;
diff --git a/drivers/cpufreq/spear-cpufreq.c b/drivers/cpufreq/spear-cpufreq.c
index c3efa7f2a908..19e364fa5955 100644
--- a/drivers/cpufreq/spear-cpufreq.c
+++ b/drivers/cpufreq/spear-cpufreq.c
@@ -18,7 +18,7 @@
#include <linux/err.h>
#include <linux/init.h>
#include <linux/module.h>
-#include <linux/of.h>
+#include <linux/of_device.h>
#include <linux/slab.h>
#include <linux/types.h>
@@ -223,7 +223,7 @@ static int spear_cpufreq_driver_init(void)
const __be32 *val;
int cnt, i, ret;
- np = of_find_node_by_path("/cpus/cpu@0");
+ np = of_cpu_device_node_get(0);
if (!np) {
pr_err("No cpu node found");
return -ENODEV;
diff --git a/drivers/cpufreq/speedstep-centrino.c b/drivers/cpufreq/speedstep-centrino.c
index 0915e712fbdc..f897d5105842 100644
--- a/drivers/cpufreq/speedstep-centrino.c
+++ b/drivers/cpufreq/speedstep-centrino.c
@@ -575,7 +575,6 @@ static struct cpufreq_driver centrino_driver = {
.target = centrino_target,
.get = get_cur_freq,
.attr = centrino_attr,
- .owner = THIS_MODULE,
};
/*
diff --git a/drivers/cpufreq/speedstep-ich.c b/drivers/cpufreq/speedstep-ich.c
index e2e5aa971452..5355abb69afc 100644
--- a/drivers/cpufreq/speedstep-ich.c
+++ b/drivers/cpufreq/speedstep-ich.c
@@ -378,7 +378,6 @@ static struct cpufreq_driver speedstep_driver = {
.init = speedstep_cpu_init,
.exit = speedstep_cpu_exit,
.get = speedstep_get,
- .owner = THIS_MODULE,
.attr = speedstep_attr,
};
diff --git a/drivers/cpufreq/speedstep-smi.c b/drivers/cpufreq/speedstep-smi.c
index f5a6b70ee6c0..abfba4f731eb 100644
--- a/drivers/cpufreq/speedstep-smi.c
+++ b/drivers/cpufreq/speedstep-smi.c
@@ -375,7 +375,6 @@ static struct cpufreq_driver speedstep_driver = {
.exit = speedstep_cpu_exit,
.get = speedstep_get,
.resume = speedstep_resume,
- .owner = THIS_MODULE,
.attr = speedstep_attr,
};
diff --git a/drivers/cpufreq/tegra-cpufreq.c b/drivers/cpufreq/tegra-cpufreq.c
index cd66b85d927c..a7b876fdc1d8 100644
--- a/drivers/cpufreq/tegra-cpufreq.c
+++ b/drivers/cpufreq/tegra-cpufreq.c
@@ -255,7 +255,7 @@ static struct cpufreq_driver tegra_cpufreq_driver = {
static int __init tegra_cpufreq_init(void)
{
- cpu_clk = clk_get_sys(NULL, "cpu");
+ cpu_clk = clk_get_sys(NULL, "cclk");
if (IS_ERR(cpu_clk))
return PTR_ERR(cpu_clk);
@@ -263,7 +263,7 @@ static int __init tegra_cpufreq_init(void)
if (IS_ERR(pll_x_clk))
return PTR_ERR(pll_x_clk);
- pll_p_clk = clk_get_sys(NULL, "pll_p_cclk");
+ pll_p_clk = clk_get_sys(NULL, "pll_p");
if (IS_ERR(pll_p_clk))
return PTR_ERR(pll_p_clk);
diff --git a/drivers/cpufreq/unicore2-cpufreq.c b/drivers/cpufreq/unicore2-cpufreq.c
index 12fc904d7dab..b225f04d8ae5 100644
--- a/drivers/cpufreq/unicore2-cpufreq.c
+++ b/drivers/cpufreq/unicore2-cpufreq.c
@@ -24,7 +24,7 @@ static struct cpufreq_driver ucv2_driver;
/* make sure that only the "userspace" governor is run
* -- anything else wouldn't make sense on this platform, anyway.
*/
-int ucv2_verify_speed(struct cpufreq_policy *policy)
+static int ucv2_verify_speed(struct cpufreq_policy *policy)
{
if (policy->cpu)
return -EINVAL;
diff --git a/drivers/cpuidle/Kconfig b/drivers/cpuidle/Kconfig
index 0e2cd5cab4d0..b3fb81d7cf04 100644
--- a/drivers/cpuidle/Kconfig
+++ b/drivers/cpuidle/Kconfig
@@ -1,5 +1,6 @@
+menu "CPU Idle"
-menuconfig CPU_IDLE
+config CPU_IDLE
bool "CPU idle PM support"
default y if ACPI || PPC_PSERIES
select CPU_IDLE_GOV_LADDER if (!NO_HZ && !NO_HZ_IDLE)
@@ -29,20 +30,13 @@ config CPU_IDLE_GOV_MENU
bool "Menu governor (for tickless system)"
default y
-config CPU_IDLE_CALXEDA
- bool "CPU Idle Driver for Calxeda processors"
- depends on ARCH_HIGHBANK
- select ARM_CPU_SUSPEND
- help
- Select this to enable cpuidle on Calxeda processors.
-
-config CPU_IDLE_ZYNQ
- bool "CPU Idle Driver for Xilinx Zynq processors"
- depends on ARCH_ZYNQ
- help
- Select this to enable cpuidle on Xilinx Zynq processors.
+menu "ARM CPU Idle Drivers"
+depends on ARM
+source "drivers/cpuidle/Kconfig.arm"
+endmenu
endif
config ARCH_NEEDS_CPU_IDLE_COUPLED
def_bool n
+endmenu
diff --git a/drivers/cpuidle/Kconfig.arm b/drivers/cpuidle/Kconfig.arm
new file mode 100644
index 000000000000..b3302193c15a
--- /dev/null
+++ b/drivers/cpuidle/Kconfig.arm
@@ -0,0 +1,29 @@
+#
+# ARM CPU Idle drivers
+#
+
+config ARM_HIGHBANK_CPUIDLE
+ bool "CPU Idle Driver for Calxeda processors"
+ depends on ARCH_HIGHBANK
+ select ARM_CPU_SUSPEND
+ help
+ Select this to enable cpuidle on Calxeda processors.
+
+config ARM_KIRKWOOD_CPUIDLE
+ bool "CPU Idle Driver for Marvell Kirkwood SoCs"
+ depends on ARCH_KIRKWOOD
+ help
+ This adds the CPU Idle driver for Marvell Kirkwood SoCs.
+
+config ARM_ZYNQ_CPUIDLE
+ bool "CPU Idle Driver for Xilinx Zynq processors"
+ depends on ARCH_ZYNQ
+ help
+ Select this to enable cpuidle on Xilinx Zynq processors.
+
+config ARM_U8500_CPUIDLE
+ bool "Cpu Idle Driver for the ST-E u8500 processors"
+ depends on ARCH_U8500
+ help
+ Select this to enable cpuidle for ST-E u8500 processors
+
diff --git a/drivers/cpuidle/Makefile b/drivers/cpuidle/Makefile
index 8767a7b3eb91..0b9d200c7e45 100644
--- a/drivers/cpuidle/Makefile
+++ b/drivers/cpuidle/Makefile
@@ -5,6 +5,9 @@
obj-y += cpuidle.o driver.o governor.o sysfs.o governors/
obj-$(CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED) += coupled.o
-obj-$(CONFIG_CPU_IDLE_CALXEDA) += cpuidle-calxeda.o
-obj-$(CONFIG_ARCH_KIRKWOOD) += cpuidle-kirkwood.o
-obj-$(CONFIG_CPU_IDLE_ZYNQ) += cpuidle-zynq.o
+##################################################################################
+# ARM SoC drivers
+obj-$(CONFIG_ARM_HIGHBANK_CPUIDLE) += cpuidle-calxeda.o
+obj-$(CONFIG_ARM_KIRKWOOD_CPUIDLE) += cpuidle-kirkwood.o
+obj-$(CONFIG_ARM_ZYNQ_CPUIDLE) += cpuidle-zynq.o
+obj-$(CONFIG_ARM_U8500_CPUIDLE) += cpuidle-ux500.o
diff --git a/drivers/cpuidle/coupled.c b/drivers/cpuidle/coupled.c
index 2a297f86dbad..f8a86364c6b6 100644
--- a/drivers/cpuidle/coupled.c
+++ b/drivers/cpuidle/coupled.c
@@ -106,6 +106,7 @@ struct cpuidle_coupled {
cpumask_t coupled_cpus;
int requested_state[NR_CPUS];
atomic_t ready_waiting_counts;
+ atomic_t abort_barrier;
int online_count;
int refcnt;
int prevent;
@@ -122,12 +123,19 @@ static DEFINE_MUTEX(cpuidle_coupled_lock);
static DEFINE_PER_CPU(struct call_single_data, cpuidle_coupled_poke_cb);
/*
- * The cpuidle_coupled_poked_mask mask is used to avoid calling
+ * The cpuidle_coupled_poke_pending mask is used to avoid calling
* __smp_call_function_single with the per cpu call_single_data struct already
* in use. This prevents a deadlock where two cpus are waiting for each others
* call_single_data struct to be available
*/
-static cpumask_t cpuidle_coupled_poked_mask;
+static cpumask_t cpuidle_coupled_poke_pending;
+
+/*
+ * The cpuidle_coupled_poked mask is used to ensure that each cpu has been poked
+ * once to minimize entering the ready loop with a poke pending, which would
+ * require aborting and retrying.
+ */
+static cpumask_t cpuidle_coupled_poked;
/**
* cpuidle_coupled_parallel_barrier - synchronize all online coupled cpus
@@ -291,10 +299,11 @@ static inline int cpuidle_coupled_get_state(struct cpuidle_device *dev,
return state;
}
-static void cpuidle_coupled_poked(void *info)
+static void cpuidle_coupled_handle_poke(void *info)
{
int cpu = (unsigned long)info;
- cpumask_clear_cpu(cpu, &cpuidle_coupled_poked_mask);
+ cpumask_set_cpu(cpu, &cpuidle_coupled_poked);
+ cpumask_clear_cpu(cpu, &cpuidle_coupled_poke_pending);
}
/**
@@ -313,7 +322,7 @@ static void cpuidle_coupled_poke(int cpu)
{
struct call_single_data *csd = &per_cpu(cpuidle_coupled_poke_cb, cpu);
- if (!cpumask_test_and_set_cpu(cpu, &cpuidle_coupled_poked_mask))
+ if (!cpumask_test_and_set_cpu(cpu, &cpuidle_coupled_poke_pending))
__smp_call_function_single(cpu, csd, 0);
}
@@ -340,30 +349,19 @@ static void cpuidle_coupled_poke_others(int this_cpu,
* @coupled: the struct coupled that contains the current cpu
* @next_state: the index in drv->states of the requested state for this cpu
*
- * Updates the requested idle state for the specified cpuidle device,
- * poking all coupled cpus out of idle if necessary to let them see the new
- * state.
+ * Updates the requested idle state for the specified cpuidle device.
+ * Returns the number of waiting cpus.
*/
-static void cpuidle_coupled_set_waiting(int cpu,
+static int cpuidle_coupled_set_waiting(int cpu,
struct cpuidle_coupled *coupled, int next_state)
{
- int w;
-
coupled->requested_state[cpu] = next_state;
/*
- * If this is the last cpu to enter the waiting state, poke
- * all the other cpus out of their waiting state so they can
- * enter a deeper state. This can race with one of the cpus
- * exiting the waiting state due to an interrupt and
- * decrementing waiting_count, see comment below.
- *
* The atomic_inc_return provides a write barrier to order the write
* to requested_state with the later write that increments ready_count.
*/
- w = atomic_inc_return(&coupled->ready_waiting_counts) & WAITING_MASK;
- if (w == coupled->online_count)
- cpuidle_coupled_poke_others(cpu, coupled);
+ return atomic_inc_return(&coupled->ready_waiting_counts) & WAITING_MASK;
}
/**
@@ -410,19 +408,33 @@ static void cpuidle_coupled_set_done(int cpu, struct cpuidle_coupled *coupled)
* been processed and the poke bit has been cleared.
*
* Other interrupts may also be processed while interrupts are enabled, so
- * need_resched() must be tested after turning interrupts off again to make sure
+ * need_resched() must be tested after this function returns to make sure
* the interrupt didn't schedule work that should take the cpu out of idle.
*
- * Returns 0 if need_resched was false, -EINTR if need_resched was true.
+ * Returns 0 if no poke was pending, 1 if a poke was cleared.
*/
static int cpuidle_coupled_clear_pokes(int cpu)
{
+ if (!cpumask_test_cpu(cpu, &cpuidle_coupled_poke_pending))
+ return 0;
+
local_irq_enable();
- while (cpumask_test_cpu(cpu, &cpuidle_coupled_poked_mask))
+ while (cpumask_test_cpu(cpu, &cpuidle_coupled_poke_pending))
cpu_relax();
local_irq_disable();
- return need_resched() ? -EINTR : 0;
+ return 1;
+}
+
+static bool cpuidle_coupled_any_pokes_pending(struct cpuidle_coupled *coupled)
+{
+ cpumask_t cpus;
+ int ret;
+
+ cpumask_and(&cpus, cpu_online_mask, &coupled->coupled_cpus);
+ ret = cpumask_and(&cpus, &cpuidle_coupled_poke_pending, &cpus);
+
+ return ret;
}
/**
@@ -449,31 +461,56 @@ int cpuidle_enter_state_coupled(struct cpuidle_device *dev,
{
int entered_state = -1;
struct cpuidle_coupled *coupled = dev->coupled;
+ int w;
if (!coupled)
return -EINVAL;
while (coupled->prevent) {
- if (cpuidle_coupled_clear_pokes(dev->cpu)) {
+ cpuidle_coupled_clear_pokes(dev->cpu);
+ if (need_resched()) {
local_irq_enable();
return entered_state;
}
entered_state = cpuidle_enter_state(dev, drv,
dev->safe_state_index);
+ local_irq_disable();
}
/* Read barrier ensures online_count is read after prevent is cleared */
smp_rmb();
- cpuidle_coupled_set_waiting(dev->cpu, coupled, next_state);
+reset:
+ cpumask_clear_cpu(dev->cpu, &cpuidle_coupled_poked);
+
+ w = cpuidle_coupled_set_waiting(dev->cpu, coupled, next_state);
+ /*
+ * If this is the last cpu to enter the waiting state, poke
+ * all the other cpus out of their waiting state so they can
+ * enter a deeper state. This can race with one of the cpus
+ * exiting the waiting state due to an interrupt and
+ * decrementing waiting_count, see comment below.
+ */
+ if (w == coupled->online_count) {
+ cpumask_set_cpu(dev->cpu, &cpuidle_coupled_poked);
+ cpuidle_coupled_poke_others(dev->cpu, coupled);
+ }
retry:
/*
* Wait for all coupled cpus to be idle, using the deepest state
- * allowed for a single cpu.
+ * allowed for a single cpu. If this was not the poking cpu, wait
+ * for at least one poke before leaving to avoid a race where
+ * two cpus could arrive at the waiting loop at the same time,
+ * but the first of the two to arrive could skip the loop without
+ * processing the pokes from the last to arrive.
*/
- while (!cpuidle_coupled_cpus_waiting(coupled)) {
- if (cpuidle_coupled_clear_pokes(dev->cpu)) {
+ while (!cpuidle_coupled_cpus_waiting(coupled) ||
+ !cpumask_test_cpu(dev->cpu, &cpuidle_coupled_poked)) {
+ if (cpuidle_coupled_clear_pokes(dev->cpu))
+ continue;
+
+ if (need_resched()) {
cpuidle_coupled_set_not_waiting(dev->cpu, coupled);
goto out;
}
@@ -485,14 +522,22 @@ retry:
entered_state = cpuidle_enter_state(dev, drv,
dev->safe_state_index);
+ local_irq_disable();
}
- if (cpuidle_coupled_clear_pokes(dev->cpu)) {
+ cpuidle_coupled_clear_pokes(dev->cpu);
+ if (need_resched()) {
cpuidle_coupled_set_not_waiting(dev->cpu, coupled);
goto out;
}
/*
+ * Make sure final poke status for this cpu is visible before setting
+ * cpu as ready.
+ */
+ smp_wmb();
+
+ /*
* All coupled cpus are probably idle. There is a small chance that
* one of the other cpus just became active. Increment the ready count,
* and spin until all coupled cpus have incremented the counter. Once a
@@ -511,6 +556,28 @@ retry:
cpu_relax();
}
+ /*
+ * Make sure read of all cpus ready is done before reading pending pokes
+ */
+ smp_rmb();
+
+ /*
+ * There is a small chance that a cpu left and reentered idle after this
+ * cpu saw that all cpus were waiting. The cpu that reentered idle will
+ * have sent this cpu a poke, which will still be pending after the
+ * ready loop. The pending interrupt may be lost by the interrupt
+ * controller when entering the deep idle state. It's not possible to
+ * clear a pending interrupt without turning interrupts on and handling
+ * it, and it's too late to turn on interrupts here, so reset the
+ * coupled idle state of all cpus and retry.
+ */
+ if (cpuidle_coupled_any_pokes_pending(coupled)) {
+ cpuidle_coupled_set_done(dev->cpu, coupled);
+ /* Wait for all cpus to see the pending pokes */
+ cpuidle_coupled_parallel_barrier(dev, &coupled->abort_barrier);
+ goto reset;
+ }
+
/* all cpus have acked the coupled state */
next_state = cpuidle_coupled_get_state(dev, coupled);
@@ -596,7 +663,7 @@ have_coupled:
coupled->refcnt++;
csd = &per_cpu(cpuidle_coupled_poke_cb, dev->cpu);
- csd->func = cpuidle_coupled_poked;
+ csd->func = cpuidle_coupled_handle_poke;
csd->info = (void *)(unsigned long)dev->cpu;
return 0;
diff --git a/drivers/cpuidle/cpuidle-calxeda.c b/drivers/cpuidle/cpuidle-calxeda.c
index 0e6e408c0a63..346058479572 100644
--- a/drivers/cpuidle/cpuidle-calxeda.c
+++ b/drivers/cpuidle/cpuidle-calxeda.c
@@ -35,7 +35,7 @@
#include <asm/cp15.h>
extern void highbank_set_cpu_jump(int cpu, void *jump_addr);
-extern void *scu_base_addr;
+extern void __iomem *scu_base_addr;
static noinline void calxeda_idle_restore(void)
{
diff --git a/drivers/cpuidle/cpuidle-kirkwood.c b/drivers/cpuidle/cpuidle-kirkwood.c
index 521b0a7fdd89..41ba843251b8 100644
--- a/drivers/cpuidle/cpuidle-kirkwood.c
+++ b/drivers/cpuidle/cpuidle-kirkwood.c
@@ -60,9 +60,6 @@ static int kirkwood_cpuidle_probe(struct platform_device *pdev)
struct resource *res;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (res == NULL)
- return -EINVAL;
-
ddr_operation_base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(ddr_operation_base))
return PTR_ERR(ddr_operation_base);
@@ -70,7 +67,7 @@ static int kirkwood_cpuidle_probe(struct platform_device *pdev)
return cpuidle_register(&kirkwood_idle_driver, NULL);
}
-int kirkwood_cpuidle_remove(struct platform_device *pdev)
+static int kirkwood_cpuidle_remove(struct platform_device *pdev)
{
cpuidle_unregister(&kirkwood_idle_driver);
return 0;
diff --git a/drivers/cpuidle/cpuidle-ux500.c b/drivers/cpuidle/cpuidle-ux500.c
new file mode 100644
index 000000000000..e0564652af35
--- /dev/null
+++ b/drivers/cpuidle/cpuidle-ux500.c
@@ -0,0 +1,131 @@
+/*
+ * Copyright (c) 2012 Linaro : Daniel Lezcano <daniel.lezcano@linaro.org> (IBM)
+ *
+ * Based on the work of Rickard Andersson <rickard.andersson@stericsson.com>
+ * and Jonas Aaberg <jonas.aberg@stericsson.com>.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/cpuidle.h>
+#include <linux/spinlock.h>
+#include <linux/atomic.h>
+#include <linux/smp.h>
+#include <linux/mfd/dbx500-prcmu.h>
+#include <linux/platform_data/arm-ux500-pm.h>
+#include <linux/platform_device.h>
+
+#include <asm/cpuidle.h>
+#include <asm/proc-fns.h>
+
+static atomic_t master = ATOMIC_INIT(0);
+static DEFINE_SPINLOCK(master_lock);
+
+static inline int ux500_enter_idle(struct cpuidle_device *dev,
+ struct cpuidle_driver *drv, int index)
+{
+ int this_cpu = smp_processor_id();
+ bool recouple = false;
+
+ if (atomic_inc_return(&master) == num_online_cpus()) {
+
+ /* With this lock, we prevent the other cpu to exit and enter
+ * this function again and become the master */
+ if (!spin_trylock(&master_lock))
+ goto wfi;
+
+ /* decouple the gic from the A9 cores */
+ if (prcmu_gic_decouple()) {
+ spin_unlock(&master_lock);
+ goto out;
+ }
+
+ /* If an error occur, we will have to recouple the gic
+ * manually */
+ recouple = true;
+
+ /* At this state, as the gic is decoupled, if the other
+ * cpu is in WFI, we have the guarantee it won't be wake
+ * up, so we can safely go to retention */
+ if (!prcmu_is_cpu_in_wfi(this_cpu ? 0 : 1))
+ goto out;
+
+ /* The prcmu will be in charge of watching the interrupts
+ * and wake up the cpus */
+ if (prcmu_copy_gic_settings())
+ goto out;
+
+ /* Check in the meantime an interrupt did
+ * not occur on the gic ... */
+ if (prcmu_gic_pending_irq())
+ goto out;
+
+ /* ... and the prcmu */
+ if (prcmu_pending_irq())
+ goto out;
+
+ /* Go to the retention state, the prcmu will wait for the
+ * cpu to go WFI and this is what happens after exiting this
+ * 'master' critical section */
+ if (prcmu_set_power_state(PRCMU_AP_IDLE, true, true))
+ goto out;
+
+ /* When we switch to retention, the prcmu is in charge
+ * of recoupling the gic automatically */
+ recouple = false;
+
+ spin_unlock(&master_lock);
+ }
+wfi:
+ cpu_do_idle();
+out:
+ atomic_dec(&master);
+
+ if (recouple) {
+ prcmu_gic_recouple();
+ spin_unlock(&master_lock);
+ }
+
+ return index;
+}
+
+static struct cpuidle_driver ux500_idle_driver = {
+ .name = "ux500_idle",
+ .owner = THIS_MODULE,
+ .states = {
+ ARM_CPUIDLE_WFI_STATE,
+ {
+ .enter = ux500_enter_idle,
+ .exit_latency = 70,
+ .target_residency = 260,
+ .flags = CPUIDLE_FLAG_TIME_VALID |
+ CPUIDLE_FLAG_TIMER_STOP,
+ .name = "ApIdle",
+ .desc = "ARM Retention",
+ },
+ },
+ .safe_state_index = 0,
+ .state_count = 2,
+};
+
+static int __init dbx500_cpuidle_probe(struct platform_device *pdev)
+{
+ /* Configure wake up reasons */
+ prcmu_enable_wakeups(PRCMU_WAKEUP(ARM) | PRCMU_WAKEUP(RTC) |
+ PRCMU_WAKEUP(ABB));
+
+ return cpuidle_register(&ux500_idle_driver, NULL);
+}
+
+static struct platform_driver dbx500_cpuidle_plat_driver = {
+ .driver = {
+ .name = "cpuidle-dbx500",
+ .owner = THIS_MODULE,
+ },
+ .probe = dbx500_cpuidle_probe,
+};
+
+module_platform_driver(dbx500_cpuidle_plat_driver);
diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c
index fdc432f18022..d75040ddd2b3 100644
--- a/drivers/cpuidle/cpuidle.c
+++ b/drivers/cpuidle/cpuidle.c
@@ -42,8 +42,6 @@ void disable_cpuidle(void)
off = 1;
}
-static int __cpuidle_register_device(struct cpuidle_device *dev);
-
/**
* cpuidle_play_dead - cpu off-lining
*
@@ -278,7 +276,7 @@ static void poll_idle_init(struct cpuidle_driver *drv) {}
*/
int cpuidle_enable_device(struct cpuidle_device *dev)
{
- int ret, i;
+ int ret;
struct cpuidle_driver *drv;
if (!dev)
@@ -292,15 +290,12 @@ int cpuidle_enable_device(struct cpuidle_device *dev)
if (!drv || !cpuidle_curr_governor)
return -EIO;
+ if (!dev->registered)
+ return -EINVAL;
+
if (!dev->state_count)
dev->state_count = drv->state_count;
- if (dev->registered == 0) {
- ret = __cpuidle_register_device(dev);
- if (ret)
- return ret;
- }
-
poll_idle_init(drv);
ret = cpuidle_add_device_sysfs(dev);
@@ -311,12 +306,6 @@ int cpuidle_enable_device(struct cpuidle_device *dev)
(ret = cpuidle_curr_governor->enable(drv, dev)))
goto fail_sysfs;
- for (i = 0; i < dev->state_count; i++) {
- dev->states_usage[i].usage = 0;
- dev->states_usage[i].time = 0;
- }
- dev->last_residency = 0;
-
smp_wmb();
dev->enabled = 1;
@@ -360,6 +349,23 @@ void cpuidle_disable_device(struct cpuidle_device *dev)
EXPORT_SYMBOL_GPL(cpuidle_disable_device);
+static void __cpuidle_unregister_device(struct cpuidle_device *dev)
+{
+ struct cpuidle_driver *drv = cpuidle_get_cpu_driver(dev);
+
+ list_del(&dev->device_list);
+ per_cpu(cpuidle_devices, dev->cpu) = NULL;
+ module_put(drv->owner);
+}
+
+static int __cpuidle_device_init(struct cpuidle_device *dev)
+{
+ memset(dev->states_usage, 0, sizeof(dev->states_usage));
+ dev->last_residency = 0;
+
+ return 0;
+}
+
/**
* __cpuidle_register_device - internal register function called before register
* and enable routines
@@ -377,24 +383,15 @@ static int __cpuidle_register_device(struct cpuidle_device *dev)
per_cpu(cpuidle_devices, dev->cpu) = dev;
list_add(&dev->device_list, &cpuidle_detected_devices);
- ret = cpuidle_add_sysfs(dev);
- if (ret)
- goto err_sysfs;
ret = cpuidle_coupled_register_device(dev);
- if (ret)
- goto err_coupled;
+ if (ret) {
+ __cpuidle_unregister_device(dev);
+ return ret;
+ }
dev->registered = 1;
return 0;
-
-err_coupled:
- cpuidle_remove_sysfs(dev);
-err_sysfs:
- list_del(&dev->device_list);
- per_cpu(cpuidle_devices, dev->cpu) = NULL;
- module_put(drv->owner);
- return ret;
}
/**
@@ -403,25 +400,44 @@ err_sysfs:
*/
int cpuidle_register_device(struct cpuidle_device *dev)
{
- int ret;
+ int ret = -EBUSY;
if (!dev)
return -EINVAL;
mutex_lock(&cpuidle_lock);
- if ((ret = __cpuidle_register_device(dev))) {
- mutex_unlock(&cpuidle_lock);
- return ret;
- }
+ if (dev->registered)
+ goto out_unlock;
+
+ ret = __cpuidle_device_init(dev);
+ if (ret)
+ goto out_unlock;
+
+ ret = __cpuidle_register_device(dev);
+ if (ret)
+ goto out_unlock;
+
+ ret = cpuidle_add_sysfs(dev);
+ if (ret)
+ goto out_unregister;
+
+ ret = cpuidle_enable_device(dev);
+ if (ret)
+ goto out_sysfs;
- cpuidle_enable_device(dev);
cpuidle_install_idle_handler();
+out_unlock:
mutex_unlock(&cpuidle_lock);
- return 0;
+ return ret;
+out_sysfs:
+ cpuidle_remove_sysfs(dev);
+out_unregister:
+ __cpuidle_unregister_device(dev);
+ goto out_unlock;
}
EXPORT_SYMBOL_GPL(cpuidle_register_device);
@@ -432,8 +448,6 @@ EXPORT_SYMBOL_GPL(cpuidle_register_device);
*/
void cpuidle_unregister_device(struct cpuidle_device *dev)
{
- struct cpuidle_driver *drv = cpuidle_get_cpu_driver(dev);
-
if (dev->registered == 0)
return;
@@ -442,14 +456,12 @@ void cpuidle_unregister_device(struct cpuidle_device *dev)
cpuidle_disable_device(dev);
cpuidle_remove_sysfs(dev);
- list_del(&dev->device_list);
- per_cpu(cpuidle_devices, dev->cpu) = NULL;
+
+ __cpuidle_unregister_device(dev);
cpuidle_coupled_unregister_device(dev);
cpuidle_resume_and_unlock();
-
- module_put(drv->owner);
}
EXPORT_SYMBOL_GPL(cpuidle_unregister_device);
diff --git a/drivers/cpuidle/governors/ladder.c b/drivers/cpuidle/governors/ladder.c
index 9b784051ec12..9f08e8cce1af 100644
--- a/drivers/cpuidle/governors/ladder.c
+++ b/drivers/cpuidle/governors/ladder.c
@@ -192,14 +192,4 @@ static int __init init_ladder(void)
return cpuidle_register_governor(&ladder_governor);
}
-/**
- * exit_ladder - exits the governor
- */
-static void __exit exit_ladder(void)
-{
- cpuidle_unregister_governor(&ladder_governor);
-}
-
-MODULE_LICENSE("GPL");
-module_init(init_ladder);
-module_exit(exit_ladder);
+postcore_initcall(init_ladder);
diff --git a/drivers/cpuidle/governors/menu.c b/drivers/cpuidle/governors/menu.c
index bc580b67a652..cf7f2f0e4ef5 100644
--- a/drivers/cpuidle/governors/menu.c
+++ b/drivers/cpuidle/governors/menu.c
@@ -21,6 +21,15 @@
#include <linux/math64.h>
#include <linux/module.h>
+/*
+ * Please note when changing the tuning values:
+ * If (MAX_INTERESTING-1) * RESOLUTION > UINT_MAX, the result of
+ * a scaling operation multiplication may overflow on 32 bit platforms.
+ * In that case, #define RESOLUTION as ULL to get 64 bit result:
+ * #define RESOLUTION 1024ULL
+ *
+ * The default values do not overflow.
+ */
#define BUCKETS 12
#define INTERVALS 8
#define RESOLUTION 1024
@@ -114,11 +123,11 @@ struct menu_device {
int needs_update;
unsigned int expected_us;
- u64 predicted_us;
+ unsigned int predicted_us;
unsigned int exit_us;
unsigned int bucket;
- u64 correction_factor[BUCKETS];
- u32 intervals[INTERVALS];
+ unsigned int correction_factor[BUCKETS];
+ unsigned int intervals[INTERVALS];
int interval_ptr;
};
@@ -199,16 +208,20 @@ static u64 div_round64(u64 dividend, u32 divisor)
*/
static void get_typical_interval(struct menu_device *data)
{
- int i = 0, divisor = 0;
- uint64_t max = 0, avg = 0, stddev = 0;
- int64_t thresh = LLONG_MAX; /* Discard outliers above this value. */
+ int i, divisor;
+ unsigned int max, thresh;
+ uint64_t avg, stddev;
+
+ thresh = UINT_MAX; /* Discard outliers above this value */
again:
- /* first calculate average and standard deviation of the past */
- max = avg = divisor = stddev = 0;
+ /* First calculate the average of past intervals */
+ max = 0;
+ avg = 0;
+ divisor = 0;
for (i = 0; i < INTERVALS; i++) {
- int64_t value = data->intervals[i];
+ unsigned int value = data->intervals[i];
if (value <= thresh) {
avg += value;
divisor++;
@@ -218,15 +231,38 @@ again:
}
do_div(avg, divisor);
+ /* Then try to determine standard deviation */
+ stddev = 0;
for (i = 0; i < INTERVALS; i++) {
- int64_t value = data->intervals[i];
+ unsigned int value = data->intervals[i];
if (value <= thresh) {
int64_t diff = value - avg;
stddev += diff * diff;
}
}
do_div(stddev, divisor);
- stddev = int_sqrt(stddev);
+ /*
+ * The typical interval is obtained when standard deviation is small
+ * or standard deviation is small compared to the average interval.
+ *
+ * int_sqrt() formal parameter type is unsigned long. When the
+ * greatest difference to an outlier exceeds ~65 ms * sqrt(divisor)
+ * the resulting squared standard deviation exceeds the input domain
+ * of int_sqrt on platforms where unsigned long is 32 bits in size.
+ * In such case reject the candidate average.
+ *
+ * Use this result only if there is no timer to wake us up sooner.
+ */
+ if (likely(stddev <= ULONG_MAX)) {
+ stddev = int_sqrt(stddev);
+ if (((avg > stddev * 6) && (divisor * 4 >= INTERVALS * 3))
+ || stddev <= 20) {
+ if (data->expected_us > avg)
+ data->predicted_us = avg;
+ return;
+ }
+ }
+
/*
* If we have outliers to the upside in our distribution, discard
* those by setting the threshold to exclude these outliers, then
@@ -235,20 +271,12 @@ again:
*
* This can deal with workloads that have long pauses interspersed
* with sporadic activity with a bunch of short pauses.
- *
- * The typical interval is obtained when standard deviation is small
- * or standard deviation is small compared to the average interval.
*/
- if (((avg > stddev * 6) && (divisor * 4 >= INTERVALS * 3))
- || stddev <= 20) {
- data->predicted_us = avg;
+ if ((divisor * 4) <= INTERVALS * 3)
return;
- } else if ((divisor * 4) > INTERVALS * 3) {
- /* Exclude the max interval */
- thresh = max - 1;
- goto again;
- }
+ thresh = max - 1;
+ goto again;
}
/**
@@ -293,8 +321,13 @@ static int menu_select(struct cpuidle_driver *drv, struct cpuidle_device *dev)
if (data->correction_factor[data->bucket] == 0)
data->correction_factor[data->bucket] = RESOLUTION * DECAY;
- /* Make sure to round up for half microseconds */
- data->predicted_us = div_round64(data->expected_us * data->correction_factor[data->bucket],
+ /*
+ * Force the result of multiplication to be 64 bits even if both
+ * operands are 32 bits.
+ * Make sure to round up for half microseconds.
+ */
+ data->predicted_us = div_round64((uint64_t)data->expected_us *
+ data->correction_factor[data->bucket],
RESOLUTION * DECAY);
get_typical_interval(data);
@@ -360,7 +393,7 @@ static void menu_update(struct cpuidle_driver *drv, struct cpuidle_device *dev)
unsigned int last_idle_us = cpuidle_get_last_residency(dev);
struct cpuidle_state *target = &drv->states[last_idx];
unsigned int measured_us;
- u64 new_factor;
+ unsigned int new_factor;
/*
* Ugh, this idle state doesn't support residency measurements, so we
@@ -381,10 +414,9 @@ static void menu_update(struct cpuidle_driver *drv, struct cpuidle_device *dev)
measured_us -= data->exit_us;
- /* update our correction ratio */
-
- new_factor = data->correction_factor[data->bucket]
- * (DECAY - 1) / DECAY;
+ /* Update our correction ratio */
+ new_factor = data->correction_factor[data->bucket];
+ new_factor -= new_factor / DECAY;
if (data->expected_us > 0 && measured_us < MAX_INTERESTING)
new_factor += RESOLUTION * measured_us / data->expected_us;
@@ -397,9 +429,11 @@ static void menu_update(struct cpuidle_driver *drv, struct cpuidle_device *dev)
/*
* We don't want 0 as factor; we always want at least
- * a tiny bit of estimated time.
+ * a tiny bit of estimated time. Fortunately, due to rounding,
+ * new_factor will stay nonzero regardless of measured_us values
+ * and the compiler can eliminate this test as long as DECAY > 1.
*/
- if (new_factor == 0)
+ if (DECAY == 1 && unlikely(new_factor == 0))
new_factor = 1;
data->correction_factor[data->bucket] = new_factor;
@@ -442,14 +476,4 @@ static int __init init_menu(void)
return cpuidle_register_governor(&menu_governor);
}
-/**
- * exit_menu - exits the governor
- */
-static void __exit exit_menu(void)
-{
- cpuidle_unregister_governor(&menu_governor);
-}
-
-MODULE_LICENSE("GPL");
-module_init(init_menu);
-module_exit(exit_menu);
+postcore_initcall(init_menu);
diff --git a/drivers/cpuidle/sysfs.c b/drivers/cpuidle/sysfs.c
index 428754af6236..8739cc05228c 100644
--- a/drivers/cpuidle/sysfs.c
+++ b/drivers/cpuidle/sysfs.c
@@ -11,8 +11,10 @@
#include <linux/sysfs.h>
#include <linux/slab.h>
#include <linux/cpu.h>
+#include <linux/completion.h>
#include <linux/capability.h>
#include <linux/device.h>
+#include <linux/kobject.h>
#include "cpuidle.h"
@@ -33,7 +35,8 @@ static ssize_t show_available_governors(struct device *dev,
mutex_lock(&cpuidle_lock);
list_for_each_entry(tmp, &cpuidle_governors, governor_list) {
- if (i >= (ssize_t) ((PAGE_SIZE/sizeof(char)) - CPUIDLE_NAME_LEN - 2))
+ if (i >= (ssize_t) ((PAGE_SIZE/sizeof(char)) -
+ CPUIDLE_NAME_LEN - 2))
goto out;
i += scnprintf(&buf[i], CPUIDLE_NAME_LEN, "%s ", tmp->name);
}
@@ -166,13 +169,28 @@ struct cpuidle_attr {
#define define_one_rw(_name, show, store) \
static struct cpuidle_attr attr_##_name = __ATTR(_name, 0644, show, store)
-#define kobj_to_cpuidledev(k) container_of(k, struct cpuidle_device, kobj)
#define attr_to_cpuidleattr(a) container_of(a, struct cpuidle_attr, attr)
-static ssize_t cpuidle_show(struct kobject * kobj, struct attribute * attr ,char * buf)
+
+struct cpuidle_device_kobj {
+ struct cpuidle_device *dev;
+ struct completion kobj_unregister;
+ struct kobject kobj;
+};
+
+static inline struct cpuidle_device *to_cpuidle_device(struct kobject *kobj)
+{
+ struct cpuidle_device_kobj *kdev =
+ container_of(kobj, struct cpuidle_device_kobj, kobj);
+
+ return kdev->dev;
+}
+
+static ssize_t cpuidle_show(struct kobject *kobj, struct attribute *attr,
+ char *buf)
{
int ret = -EIO;
- struct cpuidle_device *dev = kobj_to_cpuidledev(kobj);
- struct cpuidle_attr * cattr = attr_to_cpuidleattr(attr);
+ struct cpuidle_device *dev = to_cpuidle_device(kobj);
+ struct cpuidle_attr *cattr = attr_to_cpuidleattr(attr);
if (cattr->show) {
mutex_lock(&cpuidle_lock);
@@ -182,12 +200,12 @@ static ssize_t cpuidle_show(struct kobject * kobj, struct attribute * attr ,char
return ret;
}
-static ssize_t cpuidle_store(struct kobject * kobj, struct attribute * attr,
- const char * buf, size_t count)
+static ssize_t cpuidle_store(struct kobject *kobj, struct attribute *attr,
+ const char *buf, size_t count)
{
int ret = -EIO;
- struct cpuidle_device *dev = kobj_to_cpuidledev(kobj);
- struct cpuidle_attr * cattr = attr_to_cpuidleattr(attr);
+ struct cpuidle_device *dev = to_cpuidle_device(kobj);
+ struct cpuidle_attr *cattr = attr_to_cpuidleattr(attr);
if (cattr->store) {
mutex_lock(&cpuidle_lock);
@@ -204,9 +222,10 @@ static const struct sysfs_ops cpuidle_sysfs_ops = {
static void cpuidle_sysfs_release(struct kobject *kobj)
{
- struct cpuidle_device *dev = kobj_to_cpuidledev(kobj);
+ struct cpuidle_device_kobj *kdev =
+ container_of(kobj, struct cpuidle_device_kobj, kobj);
- complete(&dev->kobj_unregister);
+ complete(&kdev->kobj_unregister);
}
static struct kobj_type ktype_cpuidle = {
@@ -237,8 +256,8 @@ static ssize_t show_state_##_name(struct cpuidle_state *state, \
#define define_store_state_ull_function(_name) \
static ssize_t store_state_##_name(struct cpuidle_state *state, \
- struct cpuidle_state_usage *state_usage, \
- const char *buf, size_t size) \
+ struct cpuidle_state_usage *state_usage, \
+ const char *buf, size_t size) \
{ \
unsigned long long value; \
int err; \
@@ -256,14 +275,16 @@ static ssize_t store_state_##_name(struct cpuidle_state *state, \
#define define_show_state_ull_function(_name) \
static ssize_t show_state_##_name(struct cpuidle_state *state, \
- struct cpuidle_state_usage *state_usage, char *buf) \
+ struct cpuidle_state_usage *state_usage, \
+ char *buf) \
{ \
return sprintf(buf, "%llu\n", state_usage->_name);\
}
#define define_show_state_str_function(_name) \
static ssize_t show_state_##_name(struct cpuidle_state *state, \
- struct cpuidle_state_usage *state_usage, char *buf) \
+ struct cpuidle_state_usage *state_usage, \
+ char *buf) \
{ \
if (state->_name[0] == '\0')\
return sprintf(buf, "<null>\n");\
@@ -309,8 +330,9 @@ struct cpuidle_state_kobj {
#define kobj_to_state(k) (kobj_to_state_obj(k)->state)
#define kobj_to_state_usage(k) (kobj_to_state_obj(k)->state_usage)
#define attr_to_stateattr(a) container_of(a, struct cpuidle_state_attr, attr)
-static ssize_t cpuidle_state_show(struct kobject * kobj,
- struct attribute * attr ,char * buf)
+
+static ssize_t cpuidle_state_show(struct kobject *kobj, struct attribute *attr,
+ char * buf)
{
int ret = -EIO;
struct cpuidle_state *state = kobj_to_state(kobj);
@@ -323,8 +345,8 @@ static ssize_t cpuidle_state_show(struct kobject * kobj,
return ret;
}
-static ssize_t cpuidle_state_store(struct kobject *kobj,
- struct attribute *attr, const char *buf, size_t size)
+static ssize_t cpuidle_state_store(struct kobject *kobj, struct attribute *attr,
+ const char *buf, size_t size)
{
int ret = -EIO;
struct cpuidle_state *state = kobj_to_state(kobj);
@@ -371,6 +393,7 @@ static int cpuidle_add_state_sysfs(struct cpuidle_device *device)
{
int i, ret = -ENOMEM;
struct cpuidle_state_kobj *kobj;
+ struct cpuidle_device_kobj *kdev = device->kobj_dev;
struct cpuidle_driver *drv = cpuidle_get_cpu_driver(device);
/* state statistics */
@@ -383,7 +406,7 @@ static int cpuidle_add_state_sysfs(struct cpuidle_device *device)
init_completion(&kobj->kobj_unregister);
ret = kobject_init_and_add(&kobj->kobj, &ktype_state_cpuidle,
- &device->kobj, "state%d", i);
+ &kdev->kobj, "state%d", i);
if (ret) {
kfree(kobj);
goto error_state;
@@ -449,8 +472,8 @@ static void cpuidle_driver_sysfs_release(struct kobject *kobj)
complete(&driver_kobj->kobj_unregister);
}
-static ssize_t cpuidle_driver_show(struct kobject *kobj, struct attribute * attr,
- char * buf)
+static ssize_t cpuidle_driver_show(struct kobject *kobj, struct attribute *attr,
+ char *buf)
{
int ret = -EIO;
struct cpuidle_driver_kobj *driver_kobj = kobj_to_driver_kobj(kobj);
@@ -500,6 +523,7 @@ static struct kobj_type ktype_driver_cpuidle = {
static int cpuidle_add_driver_sysfs(struct cpuidle_device *dev)
{
struct cpuidle_driver_kobj *kdrv;
+ struct cpuidle_device_kobj *kdev = dev->kobj_dev;
struct cpuidle_driver *drv = cpuidle_get_cpu_driver(dev);
int ret;
@@ -511,7 +535,7 @@ static int cpuidle_add_driver_sysfs(struct cpuidle_device *dev)
init_completion(&kdrv->kobj_unregister);
ret = kobject_init_and_add(&kdrv->kobj, &ktype_driver_cpuidle,
- &dev->kobj, "driver");
+ &kdev->kobj, "driver");
if (ret) {
kfree(kdrv);
return ret;
@@ -580,16 +604,28 @@ void cpuidle_remove_device_sysfs(struct cpuidle_device *device)
*/
int cpuidle_add_sysfs(struct cpuidle_device *dev)
{
+ struct cpuidle_device_kobj *kdev;
struct device *cpu_dev = get_cpu_device((unsigned long)dev->cpu);
int error;
- init_completion(&dev->kobj_unregister);
+ kdev = kzalloc(sizeof(*kdev), GFP_KERNEL);
+ if (!kdev)
+ return -ENOMEM;
+ kdev->dev = dev;
+ dev->kobj_dev = kdev;
- error = kobject_init_and_add(&dev->kobj, &ktype_cpuidle, &cpu_dev->kobj,
- "cpuidle");
- if (!error)
- kobject_uevent(&dev->kobj, KOBJ_ADD);
- return error;
+ init_completion(&kdev->kobj_unregister);
+
+ error = kobject_init_and_add(&kdev->kobj, &ktype_cpuidle, &cpu_dev->kobj,
+ "cpuidle");
+ if (error) {
+ kfree(kdev);
+ return error;
+ }
+
+ kobject_uevent(&kdev->kobj, KOBJ_ADD);
+
+ return 0;
}
/**
@@ -598,6 +634,9 @@ int cpuidle_add_sysfs(struct cpuidle_device *dev)
*/
void cpuidle_remove_sysfs(struct cpuidle_device *dev)
{
- kobject_put(&dev->kobj);
- wait_for_completion(&dev->kobj_unregister);
+ struct cpuidle_device_kobj *kdev = dev->kobj_dev;
+
+ kobject_put(&kdev->kobj);
+ wait_for_completion(&kdev->kobj_unregister);
+ kfree(kdev);
}
diff --git a/drivers/ide/ide-acpi.c b/drivers/ide/ide-acpi.c
index f1a6796b165c..140c8ef50529 100644
--- a/drivers/ide/ide-acpi.c
+++ b/drivers/ide/ide-acpi.c
@@ -520,11 +520,12 @@ void ide_acpi_set_state(ide_hwif_t *hwif, int on)
ide_port_for_each_present_dev(i, drive, hwif) {
if (drive->acpidata->obj_handle)
acpi_bus_set_power(drive->acpidata->obj_handle,
- on ? ACPI_STATE_D0 : ACPI_STATE_D3);
+ on ? ACPI_STATE_D0 : ACPI_STATE_D3_COLD);
}
if (!on)
- acpi_bus_set_power(hwif->acpidata->obj_handle, ACPI_STATE_D3);
+ acpi_bus_set_power(hwif->acpidata->obj_handle,
+ ACPI_STATE_D3_COLD);
}
/**
diff --git a/drivers/mfd/db8500-prcmu.c b/drivers/mfd/db8500-prcmu.c
index 3c157faee645..0d68eb1a5ec5 100644
--- a/drivers/mfd/db8500-prcmu.c
+++ b/drivers/mfd/db8500-prcmu.c
@@ -3094,6 +3094,10 @@ static struct mfd_cell db8500_prcmu_devs[] = {
.pdata_size = sizeof(db8500_cpufreq_table),
},
{
+ .name = "cpuidle-dbx500",
+ .of_compatible = "stericsson,cpuidle-dbx500",
+ },
+ {
.name = "db8500-thermal",
.num_resources = ARRAY_SIZE(db8500_thsens_resources),
.resources = db8500_thsens_resources,
diff --git a/drivers/of/base.c b/drivers/of/base.c
index 1c3c79c79742..e486e416d5a0 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -18,6 +18,7 @@
* 2 of the License, or (at your option) any later version.
*/
#include <linux/ctype.h>
+#include <linux/cpu.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/spinlock.h>
@@ -231,6 +232,100 @@ const void *of_get_property(const struct device_node *np, const char *name,
}
EXPORT_SYMBOL(of_get_property);
+/*
+ * arch_match_cpu_phys_id - Match the given logical CPU and physical id
+ *
+ * @cpu: logical cpu index of a core/thread
+ * @phys_id: physical identifier of a core/thread
+ *
+ * CPU logical to physical index mapping is architecture specific.
+ * However this __weak function provides a default match of physical
+ * id to logical cpu index. phys_id provided here is usually values read
+ * from the device tree which must match the hardware internal registers.
+ *
+ * Returns true if the physical identifier and the logical cpu index
+ * correspond to the same core/thread, false otherwise.
+ */
+bool __weak arch_match_cpu_phys_id(int cpu, u64 phys_id)
+{
+ return (u32)phys_id == cpu;
+}
+
+/**
+ * Checks if the given "prop_name" property holds the physical id of the
+ * core/thread corresponding to the logical cpu 'cpu'. If 'thread' is not
+ * NULL, local thread number within the core is returned in it.
+ */
+static bool __of_find_n_match_cpu_property(struct device_node *cpun,
+ const char *prop_name, int cpu, unsigned int *thread)
+{
+ const __be32 *cell;
+ int ac, prop_len, tid;
+ u64 hwid;
+
+ ac = of_n_addr_cells(cpun);
+ cell = of_get_property(cpun, prop_name, &prop_len);
+ if (!cell)
+ return false;
+ prop_len /= sizeof(*cell);
+ for (tid = 0; tid < prop_len; tid++) {
+ hwid = of_read_number(cell, ac);
+ if (arch_match_cpu_phys_id(cpu, hwid)) {
+ if (thread)
+ *thread = tid;
+ return true;
+ }
+ cell += ac;
+ }
+ return false;
+}
+
+/**
+ * of_get_cpu_node - Get device node associated with the given logical CPU
+ *
+ * @cpu: CPU number(logical index) for which device node is required
+ * @thread: if not NULL, local thread number within the physical core is
+ * returned
+ *
+ * The main purpose of this function is to retrieve the device node for the
+ * given logical CPU index. It should be used to initialize the of_node in
+ * cpu device. Once of_node in cpu device is populated, all the further
+ * references can use that instead.
+ *
+ * CPU logical to physical index mapping is architecture specific and is built
+ * before booting secondary cores. This function uses arch_match_cpu_phys_id
+ * which can be overridden by architecture specific implementation.
+ *
+ * Returns a node pointer for the logical cpu if found, else NULL.
+ */
+struct device_node *of_get_cpu_node(int cpu, unsigned int *thread)
+{
+ struct device_node *cpun, *cpus;
+
+ cpus = of_find_node_by_path("/cpus");
+ if (!cpus) {
+ pr_warn("Missing cpus node, bailing out\n");
+ return NULL;
+ }
+
+ for_each_child_of_node(cpus, cpun) {
+ if (of_node_cmp(cpun->type, "cpu"))
+ continue;
+ /* Check for non-standard "ibm,ppc-interrupt-server#s" property
+ * for thread ids on PowerPC. If it doesn't exist fallback to
+ * standard "reg" property.
+ */
+ if (IS_ENABLED(CONFIG_PPC) &&
+ __of_find_n_match_cpu_property(cpun,
+ "ibm,ppc-interrupt-server#s", cpu, thread))
+ return cpun;
+ if (__of_find_n_match_cpu_property(cpun, "reg", cpu, thread))
+ return cpun;
+ }
+ return NULL;
+}
+EXPORT_SYMBOL(of_get_cpu_node);
+
/** Checks if the given "compat" string matches one of the strings in
* the device's "compatible" property
*/
diff --git a/drivers/pci/hotplug/acpiphp.h b/drivers/pci/hotplug/acpiphp.h
index 6fdd49c6f0b9..f4e028924667 100644
--- a/drivers/pci/hotplug/acpiphp.h
+++ b/drivers/pci/hotplug/acpiphp.h
@@ -49,6 +49,7 @@
#define info(format, arg...) printk(KERN_INFO "%s: " format, MY_NAME , ## arg)
#define warn(format, arg...) printk(KERN_WARNING "%s: " format, MY_NAME , ## arg)
+struct acpiphp_context;
struct acpiphp_bridge;
struct acpiphp_slot;
@@ -59,6 +60,7 @@ struct slot {
struct hotplug_slot *hotplug_slot;
struct acpiphp_slot *acpi_slot;
struct hotplug_slot_info info;
+ unsigned int sun; /* ACPI _SUN (Slot User Number) value */
};
static inline const char *slot_name(struct slot *slot)
@@ -75,15 +77,11 @@ struct acpiphp_bridge {
struct list_head list;
struct list_head slots;
struct kref ref;
- acpi_handle handle;
- /* Ejectable PCI-to-PCI bridge (PCI bridge and PCI function) */
- struct acpiphp_func *func;
+ struct acpiphp_context *context;
int nr_slots;
- u32 flags;
-
/* This bus (host bridge) or Secondary bus (PCI-to-PCI bridge) */
struct pci_bus *pci_bus;
@@ -99,15 +97,13 @@ struct acpiphp_bridge {
*/
struct acpiphp_slot {
struct list_head node;
- struct acpiphp_bridge *bridge; /* parent */
+ struct pci_bus *bus;
struct list_head funcs; /* one slot may have different
objects (i.e. for each function) */
struct slot *slot;
struct mutex crit_sect;
u8 device; /* pci device# */
-
- unsigned long long sun; /* ACPI _SUN (slot unique number) */
u32 flags; /* see below */
};
@@ -119,16 +115,32 @@ struct acpiphp_slot {
* typically 8 objects per slot (i.e. for each PCI function)
*/
struct acpiphp_func {
- struct acpiphp_slot *slot; /* parent */
+ struct acpiphp_bridge *parent;
+ struct acpiphp_slot *slot;
struct list_head sibling;
- struct notifier_block nb;
- acpi_handle handle;
u8 function; /* pci function# */
u32 flags; /* see below */
};
+struct acpiphp_context {
+ acpi_handle handle;
+ struct acpiphp_func func;
+ struct acpiphp_bridge *bridge;
+ unsigned int refcount;
+};
+
+static inline struct acpiphp_context *func_to_context(struct acpiphp_func *func)
+{
+ return container_of(func, struct acpiphp_context, func);
+}
+
+static inline acpi_handle func_to_handle(struct acpiphp_func *func)
+{
+ return func_to_context(func)->handle;
+}
+
/*
* struct acpiphp_attention_info - device specific attention registration
*
@@ -142,45 +154,32 @@ struct acpiphp_attention_info
struct module *owner;
};
-/* PCI bus bridge HID */
-#define ACPI_PCI_HOST_HID "PNP0A03"
-
/* ACPI _STA method value (ignore bit 4; battery present) */
#define ACPI_STA_ALL (0x0000000f)
-/* bridge flags */
-#define BRIDGE_HAS_EJ0 (0x00000001)
-
/* slot flags */
-#define SLOT_POWEREDON (0x00000001)
-#define SLOT_ENABLED (0x00000002)
-#define SLOT_MULTIFUNCTION (0x00000004)
+#define SLOT_ENABLED (0x00000001)
/* function flags */
#define FUNC_HAS_STA (0x00000001)
#define FUNC_HAS_EJ0 (0x00000002)
-#define FUNC_HAS_PS0 (0x00000010)
-#define FUNC_HAS_PS1 (0x00000020)
-#define FUNC_HAS_PS2 (0x00000040)
-#define FUNC_HAS_PS3 (0x00000080)
-#define FUNC_HAS_DCK (0x00000100)
+#define FUNC_HAS_DCK (0x00000004)
/* function prototypes */
/* acpiphp_core.c */
int acpiphp_register_attention(struct acpiphp_attention_info*info);
int acpiphp_unregister_attention(struct acpiphp_attention_info *info);
-int acpiphp_register_hotplug_slot(struct acpiphp_slot *slot);
+int acpiphp_register_hotplug_slot(struct acpiphp_slot *slot, unsigned int sun);
void acpiphp_unregister_hotplug_slot(struct acpiphp_slot *slot);
/* acpiphp_glue.c */
typedef int (*acpiphp_callback)(struct acpiphp_slot *slot, void *data);
int acpiphp_enable_slot(struct acpiphp_slot *slot);
-int acpiphp_disable_slot(struct acpiphp_slot *slot);
-int acpiphp_eject_slot(struct acpiphp_slot *slot);
+int acpiphp_disable_and_eject_slot(struct acpiphp_slot *slot);
u8 acpiphp_get_power_status(struct acpiphp_slot *slot);
u8 acpiphp_get_attention_status(struct acpiphp_slot *slot);
u8 acpiphp_get_latch_status(struct acpiphp_slot *slot);
diff --git a/drivers/pci/hotplug/acpiphp_core.c b/drivers/pci/hotplug/acpiphp_core.c
index ca8127950fcd..bf2203ef1308 100644
--- a/drivers/pci/hotplug/acpiphp_core.c
+++ b/drivers/pci/hotplug/acpiphp_core.c
@@ -155,15 +155,11 @@ static int enable_slot(struct hotplug_slot *hotplug_slot)
static int disable_slot(struct hotplug_slot *hotplug_slot)
{
struct slot *slot = hotplug_slot->private;
- int retval;
dbg("%s - physical_slot = %s\n", __func__, slot_name(slot));
/* disable the specified slot */
- retval = acpiphp_disable_slot(slot->acpi_slot);
- if (!retval)
- retval = acpiphp_eject_slot(slot->acpi_slot);
- return retval;
+ return acpiphp_disable_and_eject_slot(slot->acpi_slot);
}
@@ -290,7 +286,8 @@ static void release_slot(struct hotplug_slot *hotplug_slot)
}
/* callback routine to initialize 'struct slot' for each slot */
-int acpiphp_register_hotplug_slot(struct acpiphp_slot *acpiphp_slot)
+int acpiphp_register_hotplug_slot(struct acpiphp_slot *acpiphp_slot,
+ unsigned int sun)
{
struct slot *slot;
int retval = -ENOMEM;
@@ -317,12 +314,11 @@ int acpiphp_register_hotplug_slot(struct acpiphp_slot *acpiphp_slot)
slot->hotplug_slot->info->adapter_status = acpiphp_get_adapter_status(slot->acpi_slot);
acpiphp_slot->slot = slot;
- snprintf(name, SLOT_NAME_SIZE, "%llu", slot->acpi_slot->sun);
+ slot->sun = sun;
+ snprintf(name, SLOT_NAME_SIZE, "%u", sun);
- retval = pci_hp_register(slot->hotplug_slot,
- acpiphp_slot->bridge->pci_bus,
- acpiphp_slot->device,
- name);
+ retval = pci_hp_register(slot->hotplug_slot, acpiphp_slot->bus,
+ acpiphp_slot->device, name);
if (retval == -EBUSY)
goto error_hpslot;
if (retval) {
diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c
index 59df8575a48c..8054ddcdaed0 100644
--- a/drivers/pci/hotplug/acpiphp_glue.c
+++ b/drivers/pci/hotplug/acpiphp_glue.c
@@ -46,6 +46,7 @@
#include <linux/pci.h>
#include <linux/pci_hotplug.h>
#include <linux/pci-acpi.h>
+#include <linux/pm_runtime.h>
#include <linux/mutex.h>
#include <linux/slab.h>
#include <linux/acpi.h>
@@ -55,28 +56,82 @@
static LIST_HEAD(bridge_list);
static DEFINE_MUTEX(bridge_mutex);
+static DEFINE_MUTEX(acpiphp_context_lock);
#define MY_NAME "acpiphp_glue"
-static void handle_hotplug_event_bridge (acpi_handle, u32, void *);
+static void handle_hotplug_event(acpi_handle handle, u32 type, void *data);
static void acpiphp_sanitize_bus(struct pci_bus *bus);
static void acpiphp_set_hpp_values(struct pci_bus *bus);
-static void hotplug_event_func(acpi_handle handle, u32 type, void *context);
-static void handle_hotplug_event_func(acpi_handle handle, u32 type, void *context);
+static void hotplug_event(acpi_handle handle, u32 type, void *data);
static void free_bridge(struct kref *kref);
-/* callback routine to check for the existence of a pci dock device */
-static acpi_status
-is_pci_dock_device(acpi_handle handle, u32 lvl, void *context, void **rv)
+static void acpiphp_context_handler(acpi_handle handle, void *context)
{
- int *count = (int *)context;
+ /* Intentionally empty. */
+}
- if (is_dock_device(handle)) {
- (*count)++;
- return AE_CTRL_TERMINATE;
- } else {
- return AE_OK;
+/**
+ * acpiphp_init_context - Create hotplug context and grab a reference to it.
+ * @handle: ACPI object handle to create the context for.
+ *
+ * Call under acpiphp_context_lock.
+ */
+static struct acpiphp_context *acpiphp_init_context(acpi_handle handle)
+{
+ struct acpiphp_context *context;
+ acpi_status status;
+
+ context = kzalloc(sizeof(*context), GFP_KERNEL);
+ if (!context)
+ return NULL;
+
+ context->handle = handle;
+ context->refcount = 1;
+ status = acpi_attach_data(handle, acpiphp_context_handler, context);
+ if (ACPI_FAILURE(status)) {
+ kfree(context);
+ return NULL;
}
+ return context;
+}
+
+/**
+ * acpiphp_get_context - Get hotplug context and grab a reference to it.
+ * @handle: ACPI object handle to get the context for.
+ *
+ * Call under acpiphp_context_lock.
+ */
+static struct acpiphp_context *acpiphp_get_context(acpi_handle handle)
+{
+ struct acpiphp_context *context = NULL;
+ acpi_status status;
+ void *data;
+
+ status = acpi_get_data(handle, acpiphp_context_handler, &data);
+ if (ACPI_SUCCESS(status)) {
+ context = data;
+ context->refcount++;
+ }
+ return context;
+}
+
+/**
+ * acpiphp_put_context - Drop a reference to ACPI hotplug context.
+ * @handle: ACPI object handle to put the context for.
+ *
+ * The context object is removed if there are no more references to it.
+ *
+ * Call under acpiphp_context_lock.
+ */
+static void acpiphp_put_context(struct acpiphp_context *context)
+{
+ if (--context->refcount)
+ return;
+
+ WARN_ON(context->bridge);
+ acpi_detach_data(context->handle, acpiphp_context_handler);
+ kfree(context);
}
static inline void get_bridge(struct acpiphp_bridge *bridge)
@@ -91,25 +146,36 @@ static inline void put_bridge(struct acpiphp_bridge *bridge)
static void free_bridge(struct kref *kref)
{
+ struct acpiphp_context *context;
struct acpiphp_bridge *bridge;
struct acpiphp_slot *slot, *next;
struct acpiphp_func *func, *tmp;
+ mutex_lock(&acpiphp_context_lock);
+
bridge = container_of(kref, struct acpiphp_bridge, ref);
list_for_each_entry_safe(slot, next, &bridge->slots, node) {
- list_for_each_entry_safe(func, tmp, &slot->funcs, sibling) {
- kfree(func);
- }
+ list_for_each_entry_safe(func, tmp, &slot->funcs, sibling)
+ acpiphp_put_context(func_to_context(func));
+
kfree(slot);
}
- /* Release reference acquired by acpiphp_bridge_handle_to_function() */
- if ((bridge->flags & BRIDGE_HAS_EJ0) && bridge->func)
- put_bridge(bridge->func->slot->bridge);
+ context = bridge->context;
+ /* Root bridges will not have hotplug context. */
+ if (context) {
+ /* Release the reference taken by acpiphp_enumerate_slots(). */
+ put_bridge(context->func.parent);
+ context->bridge = NULL;
+ acpiphp_put_context(context);
+ }
+
put_device(&bridge->pci_bus->dev);
pci_dev_put(bridge->pci_dev);
kfree(bridge);
+
+ mutex_unlock(&acpiphp_context_lock);
}
/*
@@ -119,15 +185,14 @@ static void free_bridge(struct kref *kref)
* TBD - figure out a way to only call fixups for
* systems that require them.
*/
-static int post_dock_fixups(struct notifier_block *nb, unsigned long val,
- void *v)
+static void post_dock_fixups(acpi_handle not_used, u32 event, void *data)
{
- struct acpiphp_func *func = container_of(nb, struct acpiphp_func, nb);
- struct pci_bus *bus = func->slot->bridge->pci_bus;
+ struct acpiphp_context *context = data;
+ struct pci_bus *bus = context->func.slot->bus;
u32 buses;
if (!bus->self)
- return NOTIFY_OK;
+ return;
/* fixup bad _DCK function that rewrites
* secondary bridge on slot
@@ -143,12 +208,12 @@ static int post_dock_fixups(struct notifier_block *nb, unsigned long val,
| ((unsigned int)(bus->busn_res.end) << 16);
pci_write_config_dword(bus->self, PCI_PRIMARY_BUS, buses);
}
- return NOTIFY_OK;
}
static const struct acpi_dock_ops acpiphp_dock_ops = {
- .handler = hotplug_event_func,
+ .fixup = post_dock_fixups,
+ .handler = hotplug_event,
};
/* Check whether the PCI device is managed by native PCIe hotplug driver */
@@ -182,129 +247,118 @@ static bool device_is_managed_by_native_pciehp(struct pci_dev *pdev)
static void acpiphp_dock_init(void *data)
{
- struct acpiphp_func *func = data;
+ struct acpiphp_context *context = data;
- get_bridge(func->slot->bridge);
+ get_bridge(context->func.parent);
}
static void acpiphp_dock_release(void *data)
{
- struct acpiphp_func *func = data;
+ struct acpiphp_context *context = data;
- put_bridge(func->slot->bridge);
+ put_bridge(context->func.parent);
}
/* callback routine to register each ACPI PCI slot object */
-static acpi_status
-register_slot(acpi_handle handle, u32 lvl, void *context, void **rv)
+static acpi_status register_slot(acpi_handle handle, u32 lvl, void *data,
+ void **rv)
{
- struct acpiphp_bridge *bridge = (struct acpiphp_bridge *)context;
+ struct acpiphp_bridge *bridge = data;
+ struct acpiphp_context *context;
struct acpiphp_slot *slot;
struct acpiphp_func *newfunc;
- acpi_handle tmp;
acpi_status status = AE_OK;
- unsigned long long adr, sun;
- int device, function, retval, found = 0;
+ unsigned long long adr;
+ int device, function;
struct pci_bus *pbus = bridge->pci_bus;
- struct pci_dev *pdev;
+ struct pci_dev *pdev = bridge->pci_dev;
u32 val;
- if (!acpi_pci_check_ejectable(pbus, handle) && !is_dock_device(handle))
+ if (pdev && device_is_managed_by_native_pciehp(pdev))
return AE_OK;
status = acpi_evaluate_integer(handle, "_ADR", NULL, &adr);
if (ACPI_FAILURE(status)) {
- warn("can't evaluate _ADR (%#x)\n", status);
+ acpi_handle_warn(handle, "can't evaluate _ADR (%#x)\n", status);
return AE_OK;
}
device = (adr >> 16) & 0xffff;
function = adr & 0xffff;
- pdev = bridge->pci_dev;
- if (pdev && device_is_managed_by_native_pciehp(pdev))
- return AE_OK;
-
- newfunc = kzalloc(sizeof(struct acpiphp_func), GFP_KERNEL);
- if (!newfunc)
- return AE_NO_MEMORY;
-
- newfunc->handle = handle;
+ mutex_lock(&acpiphp_context_lock);
+ context = acpiphp_init_context(handle);
+ if (!context) {
+ mutex_unlock(&acpiphp_context_lock);
+ acpi_handle_err(handle, "No hotplug context\n");
+ return AE_NOT_EXIST;
+ }
+ newfunc = &context->func;
newfunc->function = function;
+ newfunc->parent = bridge;
+ mutex_unlock(&acpiphp_context_lock);
- if (ACPI_SUCCESS(acpi_get_handle(handle, "_EJ0", &tmp)))
+ if (acpi_has_method(handle, "_EJ0"))
newfunc->flags = FUNC_HAS_EJ0;
- if (ACPI_SUCCESS(acpi_get_handle(handle, "_STA", &tmp)))
+ if (acpi_has_method(handle, "_STA"))
newfunc->flags |= FUNC_HAS_STA;
- if (ACPI_SUCCESS(acpi_get_handle(handle, "_PS0", &tmp)))
- newfunc->flags |= FUNC_HAS_PS0;
-
- if (ACPI_SUCCESS(acpi_get_handle(handle, "_PS3", &tmp)))
- newfunc->flags |= FUNC_HAS_PS3;
-
- if (ACPI_SUCCESS(acpi_get_handle(handle, "_DCK", &tmp)))
+ if (acpi_has_method(handle, "_DCK"))
newfunc->flags |= FUNC_HAS_DCK;
- status = acpi_evaluate_integer(handle, "_SUN", NULL, &sun);
- if (ACPI_FAILURE(status)) {
- /*
- * use the count of the number of slots we've found
- * for the number of the slot
- */
- sun = bridge->nr_slots+1;
- }
-
/* search for objects that share the same slot */
list_for_each_entry(slot, &bridge->slots, node)
- if (slot->device == device) {
- if (slot->sun != sun)
- warn("sibling found, but _SUN doesn't match!\n");
- found = 1;
- break;
- }
+ if (slot->device == device)
+ goto slot_found;
- if (!found) {
- slot = kzalloc(sizeof(struct acpiphp_slot), GFP_KERNEL);
- if (!slot) {
- kfree(newfunc);
- return AE_NO_MEMORY;
- }
+ slot = kzalloc(sizeof(struct acpiphp_slot), GFP_KERNEL);
+ if (!slot) {
+ status = AE_NO_MEMORY;
+ goto err;
+ }
- slot->bridge = bridge;
- slot->device = device;
- slot->sun = sun;
- INIT_LIST_HEAD(&slot->funcs);
- mutex_init(&slot->crit_sect);
+ slot->bus = bridge->pci_bus;
+ slot->device = device;
+ INIT_LIST_HEAD(&slot->funcs);
+ mutex_init(&slot->crit_sect);
+
+ list_add_tail(&slot->node, &bridge->slots);
+
+ /* Register slots for ejectable funtions only. */
+ if (acpi_pci_check_ejectable(pbus, handle) || is_dock_device(handle)) {
+ unsigned long long sun;
+ int retval;
- mutex_lock(&bridge_mutex);
- list_add_tail(&slot->node, &bridge->slots);
- mutex_unlock(&bridge_mutex);
bridge->nr_slots++;
+ status = acpi_evaluate_integer(handle, "_SUN", NULL, &sun);
+ if (ACPI_FAILURE(status))
+ sun = bridge->nr_slots;
dbg("found ACPI PCI Hotplug slot %llu at PCI %04x:%02x:%02x\n",
- slot->sun, pci_domain_nr(pbus), pbus->number, device);
- retval = acpiphp_register_hotplug_slot(slot);
+ sun, pci_domain_nr(pbus), pbus->number, device);
+
+ retval = acpiphp_register_hotplug_slot(slot, sun);
if (retval) {
+ slot->slot = NULL;
+ bridge->nr_slots--;
if (retval == -EBUSY)
warn("Slot %llu already registered by another "
- "hotplug driver\n", slot->sun);
+ "hotplug driver\n", sun);
else
warn("acpiphp_register_hotplug_slot failed "
"(err code = 0x%x)\n", retval);
- goto err_exit;
}
+ /* Even if the slot registration fails, we can still use it. */
}
+ slot_found:
newfunc->slot = slot;
- mutex_lock(&bridge_mutex);
list_add_tail(&newfunc->sibling, &slot->funcs);
- mutex_unlock(&bridge_mutex);
if (pci_bus_read_dev_vendor_id(pbus, PCI_DEVFN(device, function),
&val, 60*1000))
- slot->flags |= (SLOT_ENABLED | SLOT_POWEREDON);
+ slot->flags |= SLOT_ENABLED;
if (is_dock_device(handle)) {
/* we don't want to call this device's _EJ0
@@ -313,136 +367,46 @@ register_slot(acpi_handle handle, u32 lvl, void *context, void **rv)
*/
newfunc->flags &= ~FUNC_HAS_EJ0;
if (register_hotplug_dock_device(handle,
- &acpiphp_dock_ops, newfunc,
+ &acpiphp_dock_ops, context,
acpiphp_dock_init, acpiphp_dock_release))
dbg("failed to register dock device\n");
-
- /* we need to be notified when dock events happen
- * outside of the hotplug operation, since we may
- * need to do fixups before we can hotplug.
- */
- newfunc->nb.notifier_call = post_dock_fixups;
- if (register_dock_notifier(&newfunc->nb))
- dbg("failed to register a dock notifier");
}
/* install notify handler */
if (!(newfunc->flags & FUNC_HAS_DCK)) {
- status = acpi_install_notify_handler(handle,
- ACPI_SYSTEM_NOTIFY,
- handle_hotplug_event_func,
- newfunc);
-
+ status = acpi_install_notify_handler(handle, ACPI_SYSTEM_NOTIFY,
+ handle_hotplug_event,
+ context);
if (ACPI_FAILURE(status))
- err("failed to register interrupt notify handler\n");
- } else
- status = AE_OK;
-
- return status;
-
- err_exit:
- bridge->nr_slots--;
- mutex_lock(&bridge_mutex);
- list_del(&slot->node);
- mutex_unlock(&bridge_mutex);
- kfree(slot);
- kfree(newfunc);
-
- return AE_OK;
-}
-
-
-/* see if it's worth looking at this bridge */
-static int detect_ejectable_slots(acpi_handle handle)
-{
- int found = acpi_pci_detect_ejectable(handle);
- if (!found) {
- acpi_walk_namespace(ACPI_TYPE_DEVICE, handle, (u32)1,
- is_pci_dock_device, NULL, (void *)&found, NULL);
- }
- return found;
-}
-
-/* initialize miscellaneous stuff for both root and PCI-to-PCI bridge */
-static void init_bridge_misc(struct acpiphp_bridge *bridge)
-{
- acpi_status status;
-
- /* must be added to the list prior to calling register_slot */
- mutex_lock(&bridge_mutex);
- list_add(&bridge->list, &bridge_list);
- mutex_unlock(&bridge_mutex);
-
- /* register all slot objects under this bridge */
- status = acpi_walk_namespace(ACPI_TYPE_DEVICE, bridge->handle, (u32)1,
- register_slot, NULL, bridge, NULL);
- if (ACPI_FAILURE(status)) {
- mutex_lock(&bridge_mutex);
- list_del(&bridge->list);
- mutex_unlock(&bridge_mutex);
- return;
+ acpi_handle_err(handle,
+ "failed to install notify handler\n");
}
- /* install notify handler for P2P bridges */
- if (!pci_is_root_bus(bridge->pci_bus)) {
- if ((bridge->flags & BRIDGE_HAS_EJ0) && bridge->func) {
- status = acpi_remove_notify_handler(bridge->func->handle,
- ACPI_SYSTEM_NOTIFY,
- handle_hotplug_event_func);
- if (ACPI_FAILURE(status))
- err("failed to remove notify handler\n");
- }
- status = acpi_install_notify_handler(bridge->handle,
- ACPI_SYSTEM_NOTIFY,
- handle_hotplug_event_bridge,
- bridge);
-
- if (ACPI_FAILURE(status)) {
- err("failed to register interrupt notify handler\n");
- }
- }
-}
-
-
-/* find acpiphp_func from acpiphp_bridge */
-static struct acpiphp_func *acpiphp_bridge_handle_to_function(acpi_handle handle)
-{
- struct acpiphp_bridge *bridge;
- struct acpiphp_slot *slot;
- struct acpiphp_func *func = NULL;
-
- mutex_lock(&bridge_mutex);
- list_for_each_entry(bridge, &bridge_list, list) {
- list_for_each_entry(slot, &bridge->slots, node) {
- list_for_each_entry(func, &slot->funcs, sibling) {
- if (func->handle == handle) {
- get_bridge(func->slot->bridge);
- mutex_unlock(&bridge_mutex);
- return func;
- }
- }
- }
- }
- mutex_unlock(&bridge_mutex);
+ return AE_OK;
- return NULL;
+ err:
+ mutex_lock(&acpiphp_context_lock);
+ acpiphp_put_context(context);
+ mutex_unlock(&acpiphp_context_lock);
+ return status;
}
-
static struct acpiphp_bridge *acpiphp_handle_to_bridge(acpi_handle handle)
{
- struct acpiphp_bridge *bridge;
-
- mutex_lock(&bridge_mutex);
- list_for_each_entry(bridge, &bridge_list, list)
- if (bridge->handle == handle) {
+ struct acpiphp_context *context;
+ struct acpiphp_bridge *bridge = NULL;
+
+ mutex_lock(&acpiphp_context_lock);
+ context = acpiphp_get_context(handle);
+ if (context) {
+ bridge = context->bridge;
+ if (bridge)
get_bridge(bridge);
- mutex_unlock(&bridge_mutex);
- return bridge;
- }
- mutex_unlock(&bridge_mutex);
- return NULL;
+ acpiphp_put_context(context);
+ }
+ mutex_unlock(&acpiphp_context_lock);
+ return bridge;
}
static void cleanup_bridge(struct acpiphp_bridge *bridge)
@@ -450,40 +414,24 @@ static void cleanup_bridge(struct acpiphp_bridge *bridge)
struct acpiphp_slot *slot;
struct acpiphp_func *func;
acpi_status status;
- acpi_handle handle = bridge->handle;
-
- if (!pci_is_root_bus(bridge->pci_bus)) {
- status = acpi_remove_notify_handler(handle,
- ACPI_SYSTEM_NOTIFY,
- handle_hotplug_event_bridge);
- if (ACPI_FAILURE(status))
- err("failed to remove notify handler\n");
- }
-
- if ((bridge->flags & BRIDGE_HAS_EJ0) && bridge->func) {
- status = acpi_install_notify_handler(bridge->func->handle,
- ACPI_SYSTEM_NOTIFY,
- handle_hotplug_event_func,
- bridge->func);
- if (ACPI_FAILURE(status))
- err("failed to install interrupt notify handler\n");
- }
list_for_each_entry(slot, &bridge->slots, node) {
list_for_each_entry(func, &slot->funcs, sibling) {
- if (is_dock_device(func->handle)) {
- unregister_hotplug_dock_device(func->handle);
- unregister_dock_notifier(&func->nb);
- }
+ acpi_handle handle = func_to_handle(func);
+
+ if (is_dock_device(handle))
+ unregister_hotplug_dock_device(handle);
+
if (!(func->flags & FUNC_HAS_DCK)) {
- status = acpi_remove_notify_handler(func->handle,
- ACPI_SYSTEM_NOTIFY,
- handle_hotplug_event_func);
+ status = acpi_remove_notify_handler(handle,
+ ACPI_SYSTEM_NOTIFY,
+ handle_hotplug_event);
if (ACPI_FAILURE(status))
err("failed to remove notify handler\n");
}
}
- acpiphp_unregister_hotplug_slot(slot);
+ if (slot->slot)
+ acpiphp_unregister_hotplug_slot(slot);
}
mutex_lock(&bridge_mutex);
@@ -491,71 +439,6 @@ static void cleanup_bridge(struct acpiphp_bridge *bridge)
mutex_unlock(&bridge_mutex);
}
-static int power_on_slot(struct acpiphp_slot *slot)
-{
- acpi_status status;
- struct acpiphp_func *func;
- int retval = 0;
-
- /* if already enabled, just skip */
- if (slot->flags & SLOT_POWEREDON)
- goto err_exit;
-
- list_for_each_entry(func, &slot->funcs, sibling) {
- if (func->flags & FUNC_HAS_PS0) {
- dbg("%s: executing _PS0\n", __func__);
- status = acpi_evaluate_object(func->handle, "_PS0", NULL, NULL);
- if (ACPI_FAILURE(status)) {
- warn("%s: _PS0 failed\n", __func__);
- retval = -1;
- goto err_exit;
- } else
- break;
- }
- }
-
- /* TBD: evaluate _STA to check if the slot is enabled */
-
- slot->flags |= SLOT_POWEREDON;
-
- err_exit:
- return retval;
-}
-
-
-static int power_off_slot(struct acpiphp_slot *slot)
-{
- acpi_status status;
- struct acpiphp_func *func;
-
- int retval = 0;
-
- /* if already disabled, just skip */
- if ((slot->flags & SLOT_POWEREDON) == 0)
- goto err_exit;
-
- list_for_each_entry(func, &slot->funcs, sibling) {
- if (func->flags & FUNC_HAS_PS3) {
- status = acpi_evaluate_object(func->handle, "_PS3", NULL, NULL);
- if (ACPI_FAILURE(status)) {
- warn("%s: _PS3 failed\n", __func__);
- retval = -1;
- goto err_exit;
- } else
- break;
- }
- }
-
- /* TBD: evaluate _STA to check if the slot is disabled */
-
- slot->flags &= (~SLOT_POWEREDON);
-
- err_exit:
- return retval;
-}
-
-
-
/**
* acpiphp_max_busnr - return the highest reserved bus number under the given bus.
* @bus: bus to start search with
@@ -583,52 +466,32 @@ static unsigned char acpiphp_max_busnr(struct pci_bus *bus)
return max;
}
-
/**
- * acpiphp_bus_add - add a new bus to acpi subsystem
- * @func: acpiphp_func of the bridge
+ * acpiphp_bus_trim - Trim device objects in an ACPI namespace subtree.
+ * @handle: ACPI device object handle to start from.
*/
-static int acpiphp_bus_add(struct acpiphp_func *func)
+static void acpiphp_bus_trim(acpi_handle handle)
{
- struct acpi_device *device;
- int ret_val;
-
- if (!acpi_bus_get_device(func->handle, &device)) {
- dbg("bus exists... trim\n");
- /* this shouldn't be in here, so remove
- * the bus then re-add it...
- */
- acpi_bus_trim(device);
- }
-
- ret_val = acpi_bus_scan(func->handle);
- if (!ret_val)
- ret_val = acpi_bus_get_device(func->handle, &device);
-
- if (ret_val)
- dbg("error adding bus, %x\n", -ret_val);
+ struct acpi_device *adev = NULL;
- return ret_val;
+ acpi_bus_get_device(handle, &adev);
+ if (adev)
+ acpi_bus_trim(adev);
}
-
/**
- * acpiphp_bus_trim - trim a bus from acpi subsystem
- * @handle: handle to acpi namespace
+ * acpiphp_bus_add - Scan ACPI namespace subtree.
+ * @handle: ACPI object handle to start the scan from.
*/
-static int acpiphp_bus_trim(acpi_handle handle)
+static void acpiphp_bus_add(acpi_handle handle)
{
- struct acpi_device *device;
- int retval;
-
- retval = acpi_bus_get_device(handle, &device);
- if (retval) {
- dbg("acpi_device not found\n");
- return retval;
- }
+ struct acpi_device *adev = NULL;
- acpi_bus_trim(device);
- return 0;
+ acpiphp_bus_trim(handle);
+ acpi_bus_scan(handle);
+ acpi_bus_get_device(handle, &adev);
+ if (adev)
+ acpi_device_set_power(adev, ACPI_STATE_D0);
}
static void acpiphp_set_acpi_region(struct acpiphp_slot *slot)
@@ -645,7 +508,8 @@ static void acpiphp_set_acpi_region(struct acpiphp_slot *slot)
params[1].type = ACPI_TYPE_INTEGER;
params[1].integer.value = 1;
/* _REG is optional, we don't care about if there is failure */
- acpi_evaluate_object(func->handle, "_REG", &arg_list, NULL);
+ acpi_evaluate_object(func_to_handle(func), "_REG", &arg_list,
+ NULL);
}
}
@@ -653,59 +517,44 @@ static void check_hotplug_bridge(struct acpiphp_slot *slot, struct pci_dev *dev)
{
struct acpiphp_func *func;
- if (!dev->subordinate)
- return;
-
/* quirk, or pcie could set it already */
if (dev->is_hotplug_bridge)
return;
- if (PCI_SLOT(dev->devfn) != slot->device)
- return;
-
list_for_each_entry(func, &slot->funcs, sibling) {
if (PCI_FUNC(dev->devfn) == func->function) {
- /* check if this bridge has ejectable slots */
- if ((detect_ejectable_slots(func->handle) > 0))
- dev->is_hotplug_bridge = 1;
+ dev->is_hotplug_bridge = 1;
break;
}
}
}
/**
- * enable_device - enable, configure a slot
+ * enable_slot - enable, configure a slot
* @slot: slot to be enabled
*
* This function should be called per *physical slot*,
* not per each slot object in ACPI namespace.
*/
-static int __ref enable_device(struct acpiphp_slot *slot)
+static void __ref enable_slot(struct acpiphp_slot *slot)
{
struct pci_dev *dev;
- struct pci_bus *bus = slot->bridge->pci_bus;
+ struct pci_bus *bus = slot->bus;
struct acpiphp_func *func;
- int num, max, pass;
+ int max, pass;
LIST_HEAD(add_list);
- if (slot->flags & SLOT_ENABLED)
- goto err_exit;
-
list_for_each_entry(func, &slot->funcs, sibling)
- acpiphp_bus_add(func);
+ acpiphp_bus_add(func_to_handle(func));
- num = pci_scan_slot(bus, PCI_DEVFN(slot->device, 0));
- if (num == 0) {
- /* Maybe only part of funcs are added. */
- dbg("No new device found\n");
- goto err_exit;
- }
+ pci_scan_slot(bus, PCI_DEVFN(slot->device, 0));
max = acpiphp_max_busnr(bus);
for (pass = 0; pass < 2; pass++) {
list_for_each_entry(dev, &bus->devices, bus_list) {
if (PCI_SLOT(dev->devfn) != slot->device)
continue;
+
if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE ||
dev->hdr_type == PCI_HEADER_TYPE_CARDBUS) {
max = pci_scan_bridge(bus, dev, max, pass);
@@ -744,16 +593,12 @@ static int __ref enable_device(struct acpiphp_slot *slot)
continue;
}
}
-
-
- err_exit:
- return 0;
}
/* return first device in slot, acquiring a reference on it */
static struct pci_dev *dev_in_slot(struct acpiphp_slot *slot)
{
- struct pci_bus *bus = slot->bridge->pci_bus;
+ struct pci_bus *bus = slot->bus;
struct pci_dev *dev;
struct pci_dev *ret = NULL;
@@ -769,16 +614,16 @@ static struct pci_dev *dev_in_slot(struct acpiphp_slot *slot)
}
/**
- * disable_device - disable a slot
+ * disable_slot - disable a slot
* @slot: ACPI PHP slot
*/
-static int disable_device(struct acpiphp_slot *slot)
+static void disable_slot(struct acpiphp_slot *slot)
{
struct acpiphp_func *func;
struct pci_dev *pdev;
/*
- * enable_device() enumerates all functions in this device via
+ * enable_slot() enumerates all functions in this device via
* pci_scan_slot(), whether they have associated ACPI hotplug
* methods (_EJ0, etc.) or not. Therefore, we remove all functions
* here.
@@ -788,13 +633,10 @@ static int disable_device(struct acpiphp_slot *slot)
pci_dev_put(pdev);
}
- list_for_each_entry(func, &slot->funcs, sibling) {
- acpiphp_bus_trim(func->handle);
- }
+ list_for_each_entry(func, &slot->funcs, sibling)
+ acpiphp_bus_trim(func_to_handle(func));
slot->flags &= (~SLOT_ENABLED);
-
- return 0;
}
@@ -812,18 +654,21 @@ static int disable_device(struct acpiphp_slot *slot)
*/
static unsigned int get_slot_status(struct acpiphp_slot *slot)
{
- acpi_status status;
unsigned long long sta = 0;
- u32 dvid;
struct acpiphp_func *func;
list_for_each_entry(func, &slot->funcs, sibling) {
if (func->flags & FUNC_HAS_STA) {
- status = acpi_evaluate_integer(func->handle, "_STA", NULL, &sta);
+ acpi_status status;
+
+ status = acpi_evaluate_integer(func_to_handle(func),
+ "_STA", NULL, &sta);
if (ACPI_SUCCESS(status) && sta)
break;
} else {
- pci_bus_read_config_dword(slot->bridge->pci_bus,
+ u32 dvid;
+
+ pci_bus_read_config_dword(slot->bus,
PCI_DEVFN(slot->device,
func->function),
PCI_VENDOR_ID, &dvid);
@@ -838,34 +683,42 @@ static unsigned int get_slot_status(struct acpiphp_slot *slot)
}
/**
- * acpiphp_eject_slot - physically eject the slot
- * @slot: ACPI PHP slot
+ * trim_stale_devices - remove PCI devices that are not responding.
+ * @dev: PCI device to start walking the hierarchy from.
*/
-int acpiphp_eject_slot(struct acpiphp_slot *slot)
+static void trim_stale_devices(struct pci_dev *dev)
{
- acpi_status status;
- struct acpiphp_func *func;
- struct acpi_object_list arg_list;
- union acpi_object arg;
+ acpi_handle handle = ACPI_HANDLE(&dev->dev);
+ struct pci_bus *bus = dev->subordinate;
+ bool alive = false;
- list_for_each_entry(func, &slot->funcs, sibling) {
- /* We don't want to call _EJ0 on non-existing functions. */
- if ((func->flags & FUNC_HAS_EJ0)) {
- /* _EJ0 method take one argument */
- arg_list.count = 1;
- arg_list.pointer = &arg;
- arg.type = ACPI_TYPE_INTEGER;
- arg.integer.value = 1;
-
- status = acpi_evaluate_object(func->handle, "_EJ0", &arg_list, NULL);
- if (ACPI_FAILURE(status)) {
- warn("%s: _EJ0 failed\n", __func__);
- return -1;
- } else
- break;
- }
+ if (handle) {
+ acpi_status status;
+ unsigned long long sta;
+
+ status = acpi_evaluate_integer(handle, "_STA", NULL, &sta);
+ alive = ACPI_SUCCESS(status) && sta == ACPI_STA_ALL;
+ }
+ if (!alive) {
+ u32 v;
+
+ /* Check if the device responds. */
+ alive = pci_bus_read_dev_vendor_id(dev->bus, dev->devfn, &v, 0);
+ }
+ if (!alive) {
+ pci_stop_and_remove_bus_device(dev);
+ if (handle)
+ acpiphp_bus_trim(handle);
+ } else if (bus) {
+ struct pci_dev *child, *tmp;
+
+ /* The device is a bridge. so check the bus below it. */
+ pm_runtime_get_sync(&dev->dev);
+ list_for_each_entry_safe(child, tmp, &bus->devices, bus_list)
+ trim_stale_devices(child);
+
+ pm_runtime_put(&dev->dev);
}
- return 0;
}
/**
@@ -875,43 +728,30 @@ int acpiphp_eject_slot(struct acpiphp_slot *slot)
* Iterate over all slots under this bridge and make sure that if a
* card is present they are enabled, and if not they are disabled.
*/
-static int acpiphp_check_bridge(struct acpiphp_bridge *bridge)
+static void acpiphp_check_bridge(struct acpiphp_bridge *bridge)
{
struct acpiphp_slot *slot;
- int retval = 0;
- int enabled, disabled;
-
- enabled = disabled = 0;
list_for_each_entry(slot, &bridge->slots, node) {
- unsigned int status = get_slot_status(slot);
- if (slot->flags & SLOT_ENABLED) {
- if (status == ACPI_STA_ALL)
- continue;
- retval = acpiphp_disable_slot(slot);
- if (retval) {
- err("Error occurred in disabling\n");
- goto err_exit;
- } else {
- acpiphp_eject_slot(slot);
- }
- disabled++;
+ struct pci_bus *bus = slot->bus;
+ struct pci_dev *dev, *tmp;
+
+ mutex_lock(&slot->crit_sect);
+ /* wake up all functions */
+ if (get_slot_status(slot) == ACPI_STA_ALL) {
+ /* remove stale devices if any */
+ list_for_each_entry_safe(dev, tmp, &bus->devices,
+ bus_list)
+ if (PCI_SLOT(dev->devfn) == slot->device)
+ trim_stale_devices(dev);
+
+ /* configure all functions */
+ enable_slot(slot);
} else {
- if (status != ACPI_STA_ALL)
- continue;
- retval = acpiphp_enable_slot(slot);
- if (retval) {
- err("Error occurred in enabling\n");
- goto err_exit;
- }
- enabled++;
+ disable_slot(slot);
}
+ mutex_unlock(&slot->crit_sect);
}
-
- dbg("%s: %d enabled, %d disabled\n", __func__, enabled, disabled);
-
- err_exit:
- return retval;
}
static void acpiphp_set_hpp_values(struct pci_bus *bus)
@@ -950,25 +790,6 @@ static void acpiphp_sanitize_bus(struct pci_bus *bus)
* ACPI event handlers
*/
-static acpi_status
-check_sub_bridges(acpi_handle handle, u32 lvl, void *context, void **rv)
-{
- struct acpiphp_bridge *bridge;
- char objname[64];
- struct acpi_buffer buffer = { .length = sizeof(objname),
- .pointer = objname };
-
- bridge = acpiphp_handle_to_bridge(handle);
- if (bridge) {
- acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer);
- dbg("%s: re-enumerating slots under %s\n",
- __func__, objname);
- acpiphp_check_bridge(bridge);
- put_bridge(bridge);
- }
- return AE_OK ;
-}
-
void acpiphp_check_host_bridge(acpi_handle handle)
{
struct acpiphp_bridge *bridge;
@@ -978,27 +799,23 @@ void acpiphp_check_host_bridge(acpi_handle handle)
acpiphp_check_bridge(bridge);
put_bridge(bridge);
}
-
- acpi_walk_namespace(ACPI_TYPE_DEVICE, handle,
- ACPI_UINT32_MAX, check_sub_bridges, NULL, NULL, NULL);
}
-static void _handle_hotplug_event_bridge(struct work_struct *work)
+static void hotplug_event(acpi_handle handle, u32 type, void *data)
{
+ struct acpiphp_context *context = data;
+ struct acpiphp_func *func = &context->func;
struct acpiphp_bridge *bridge;
char objname[64];
struct acpi_buffer buffer = { .length = sizeof(objname),
.pointer = objname };
- struct acpi_hp_work *hp_work;
- acpi_handle handle;
- u32 type;
- hp_work = container_of(work, struct acpi_hp_work, work);
- handle = hp_work->handle;
- type = hp_work->type;
- bridge = (struct acpiphp_bridge *)hp_work->context;
+ mutex_lock(&acpiphp_context_lock);
+ bridge = context->bridge;
+ if (bridge)
+ get_bridge(bridge);
- acpi_scan_lock_acquire();
+ mutex_unlock(&acpiphp_context_lock);
acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer);
@@ -1007,188 +824,129 @@ static void _handle_hotplug_event_bridge(struct work_struct *work)
/* bus re-enumerate */
dbg("%s: Bus check notify on %s\n", __func__, objname);
dbg("%s: re-enumerating slots under %s\n", __func__, objname);
- acpiphp_check_bridge(bridge);
- acpi_walk_namespace(ACPI_TYPE_DEVICE, handle,
- ACPI_UINT32_MAX, check_sub_bridges, NULL, NULL, NULL);
+ if (bridge) {
+ acpiphp_check_bridge(bridge);
+ } else {
+ struct acpiphp_slot *slot = func->slot;
+
+ mutex_lock(&slot->crit_sect);
+ enable_slot(slot);
+ mutex_unlock(&slot->crit_sect);
+ }
break;
case ACPI_NOTIFY_DEVICE_CHECK:
/* device check */
dbg("%s: Device check notify on %s\n", __func__, objname);
- acpiphp_check_bridge(bridge);
- break;
+ if (bridge)
+ acpiphp_check_bridge(bridge);
+ else
+ acpiphp_check_bridge(func->parent);
- case ACPI_NOTIFY_DEVICE_WAKE:
- /* wake event */
- dbg("%s: Device wake notify on %s\n", __func__, objname);
break;
case ACPI_NOTIFY_EJECT_REQUEST:
/* request device eject */
dbg("%s: Device eject notify on %s\n", __func__, objname);
- if ((bridge->flags & BRIDGE_HAS_EJ0) && bridge->func) {
- struct acpiphp_slot *slot;
- slot = bridge->func->slot;
- if (!acpiphp_disable_slot(slot))
- acpiphp_eject_slot(slot);
- }
+ acpiphp_disable_and_eject_slot(func->slot);
break;
+ }
- case ACPI_NOTIFY_FREQUENCY_MISMATCH:
- printk(KERN_ERR "Device %s cannot be configured due"
- " to a frequency mismatch\n", objname);
- break;
+ if (bridge)
+ put_bridge(bridge);
+}
- case ACPI_NOTIFY_BUS_MODE_MISMATCH:
- printk(KERN_ERR "Device %s cannot be configured due"
- " to a bus mode mismatch\n", objname);
- break;
+static void hotplug_event_work(struct work_struct *work)
+{
+ struct acpiphp_context *context;
+ struct acpi_hp_work *hp_work;
- case ACPI_NOTIFY_POWER_FAULT:
- printk(KERN_ERR "Device %s has suffered a power fault\n",
- objname);
- break;
+ hp_work = container_of(work, struct acpi_hp_work, work);
+ context = hp_work->context;
+ acpi_scan_lock_acquire();
- default:
- warn("notify_handler: unknown event type 0x%x for %s\n", type, objname);
- break;
- }
+ hotplug_event(hp_work->handle, hp_work->type, context);
acpi_scan_lock_release();
- kfree(hp_work); /* allocated in handle_hotplug_event_bridge */
- put_bridge(bridge);
+ kfree(hp_work); /* allocated in handle_hotplug_event() */
+ put_bridge(context->func.parent);
}
/**
- * handle_hotplug_event_bridge - handle ACPI event on bridges
+ * handle_hotplug_event - handle ACPI hotplug event
* @handle: Notify()'ed acpi_handle
* @type: Notify code
- * @context: pointer to acpiphp_bridge structure
+ * @data: pointer to acpiphp_context structure
*
- * Handles ACPI event notification on {host,p2p} bridges.
+ * Handles ACPI event notification on slots.
*/
-static void handle_hotplug_event_bridge(acpi_handle handle, u32 type,
- void *context)
+static void handle_hotplug_event(acpi_handle handle, u32 type, void *data)
{
- struct acpiphp_bridge *bridge = context;
-
- /*
- * Currently the code adds all hotplug events to the kacpid_wq
- * queue when it should add hotplug events to the kacpi_hotplug_wq.
- * The proper way to fix this is to reorganize the code so that
- * drivers (dock, etc.) do not call acpi_os_execute(), etc.
- * For now just re-add this work to the kacpi_hotplug_wq so we
- * don't deadlock on hotplug actions.
- */
- get_bridge(bridge);
- alloc_acpi_hp_work(handle, type, context, _handle_hotplug_event_bridge);
-}
-
-static void hotplug_event_func(acpi_handle handle, u32 type, void *context)
-{
- struct acpiphp_func *func = context;
- char objname[64];
- struct acpi_buffer buffer = { .length = sizeof(objname),
- .pointer = objname };
-
- acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer);
+ struct acpiphp_context *context;
switch (type) {
case ACPI_NOTIFY_BUS_CHECK:
- /* bus re-enumerate */
- dbg("%s: Bus check notify on %s\n", __func__, objname);
- acpiphp_enable_slot(func->slot);
- break;
-
case ACPI_NOTIFY_DEVICE_CHECK:
- /* device check : re-enumerate from parent bus */
- dbg("%s: Device check notify on %s\n", __func__, objname);
- acpiphp_check_bridge(func->slot->bridge);
- break;
-
- case ACPI_NOTIFY_DEVICE_WAKE:
- /* wake event */
- dbg("%s: Device wake notify on %s\n", __func__, objname);
- break;
-
case ACPI_NOTIFY_EJECT_REQUEST:
- /* request device eject */
- dbg("%s: Device eject notify on %s\n", __func__, objname);
- if (!(acpiphp_disable_slot(func->slot)))
- acpiphp_eject_slot(func->slot);
break;
- default:
- warn("notify_handler: unknown event type 0x%x for %s\n", type, objname);
- break;
- }
-}
-
-static void _handle_hotplug_event_func(struct work_struct *work)
-{
- struct acpi_hp_work *hp_work;
- struct acpiphp_func *func;
+ case ACPI_NOTIFY_DEVICE_WAKE:
+ return;
- hp_work = container_of(work, struct acpi_hp_work, work);
- func = hp_work->context;
- acpi_scan_lock_acquire();
+ case ACPI_NOTIFY_FREQUENCY_MISMATCH:
+ acpi_handle_err(handle, "Device cannot be configured due "
+ "to a frequency mismatch\n");
+ return;
- hotplug_event_func(hp_work->handle, hp_work->type, func);
+ case ACPI_NOTIFY_BUS_MODE_MISMATCH:
+ acpi_handle_err(handle, "Device cannot be configured due "
+ "to a bus mode mismatch\n");
+ return;
- acpi_scan_lock_release();
- kfree(hp_work); /* allocated in handle_hotplug_event_func */
- put_bridge(func->slot->bridge);
-}
+ case ACPI_NOTIFY_POWER_FAULT:
+ acpi_handle_err(handle, "Device has suffered a power fault\n");
+ return;
-/**
- * handle_hotplug_event_func - handle ACPI event on functions (i.e. slots)
- * @handle: Notify()'ed acpi_handle
- * @type: Notify code
- * @context: pointer to acpiphp_func structure
- *
- * Handles ACPI event notification on slots.
- */
-static void handle_hotplug_event_func(acpi_handle handle, u32 type,
- void *context)
-{
- struct acpiphp_func *func = context;
+ default:
+ acpi_handle_warn(handle, "Unsupported event type 0x%x\n", type);
+ return;
+ }
- /*
- * Currently the code adds all hotplug events to the kacpid_wq
- * queue when it should add hotplug events to the kacpi_hotplug_wq.
- * The proper way to fix this is to reorganize the code so that
- * drivers (dock, etc.) do not call acpi_os_execute(), etc.
- * For now just re-add this work to the kacpi_hotplug_wq so we
- * don't deadlock on hotplug actions.
- */
- get_bridge(func->slot->bridge);
- alloc_acpi_hp_work(handle, type, context, _handle_hotplug_event_func);
+ mutex_lock(&acpiphp_context_lock);
+ context = acpiphp_get_context(handle);
+ if (context) {
+ get_bridge(context->func.parent);
+ acpiphp_put_context(context);
+ alloc_acpi_hp_work(handle, type, context, hotplug_event_work);
+ }
+ mutex_unlock(&acpiphp_context_lock);
}
/*
* Create hotplug slots for the PCI bus.
* It should always return 0 to avoid skipping following notifiers.
*/
-void acpiphp_enumerate_slots(struct pci_bus *bus, acpi_handle handle)
+void acpiphp_enumerate_slots(struct pci_bus *bus)
{
- acpi_handle dummy_handle;
struct acpiphp_bridge *bridge;
+ acpi_handle handle;
+ acpi_status status;
if (acpiphp_disabled)
return;
- if (detect_ejectable_slots(handle) <= 0)
+ handle = ACPI_HANDLE(bus->bridge);
+ if (!handle)
return;
bridge = kzalloc(sizeof(struct acpiphp_bridge), GFP_KERNEL);
- if (bridge == NULL) {
- err("out of memory\n");
+ if (!bridge) {
+ acpi_handle_err(handle, "No memory for bridge object\n");
return;
}
INIT_LIST_HEAD(&bridge->slots);
kref_init(&bridge->ref);
- bridge->handle = handle;
bridge->pci_dev = pci_dev_get(bus->self);
bridge->pci_bus = bus;
@@ -1199,31 +957,62 @@ void acpiphp_enumerate_slots(struct pci_bus *bus, acpi_handle handle)
*/
get_device(&bus->dev);
- if (!pci_is_root_bus(bridge->pci_bus) &&
- ACPI_SUCCESS(acpi_get_handle(bridge->handle,
- "_EJ0", &dummy_handle))) {
- dbg("found ejectable p2p bridge\n");
- bridge->flags |= BRIDGE_HAS_EJ0;
- bridge->func = acpiphp_bridge_handle_to_function(handle);
+ if (!pci_is_root_bus(bridge->pci_bus)) {
+ struct acpiphp_context *context;
+
+ /*
+ * This bridge should have been registered as a hotplug function
+ * under its parent, so the context has to be there. If not, we
+ * are in deep goo.
+ */
+ mutex_lock(&acpiphp_context_lock);
+ context = acpiphp_get_context(handle);
+ if (WARN_ON(!context)) {
+ mutex_unlock(&acpiphp_context_lock);
+ put_device(&bus->dev);
+ kfree(bridge);
+ return;
+ }
+ bridge->context = context;
+ context->bridge = bridge;
+ /* Get a reference to the parent bridge. */
+ get_bridge(context->func.parent);
+ mutex_unlock(&acpiphp_context_lock);
}
- init_bridge_misc(bridge);
+ /* must be added to the list prior to calling register_slot */
+ mutex_lock(&bridge_mutex);
+ list_add(&bridge->list, &bridge_list);
+ mutex_unlock(&bridge_mutex);
+
+ /* register all slot objects under this bridge */
+ status = acpi_walk_namespace(ACPI_TYPE_DEVICE, handle, 1,
+ register_slot, NULL, bridge, NULL);
+ if (ACPI_FAILURE(status)) {
+ acpi_handle_err(handle, "failed to register slots\n");
+ cleanup_bridge(bridge);
+ put_bridge(bridge);
+ }
}
/* Destroy hotplug slots associated with the PCI bus */
void acpiphp_remove_slots(struct pci_bus *bus)
{
- struct acpiphp_bridge *bridge, *tmp;
+ struct acpiphp_bridge *bridge;
if (acpiphp_disabled)
return;
- list_for_each_entry_safe(bridge, tmp, &bridge_list, list)
+ mutex_lock(&bridge_mutex);
+ list_for_each_entry(bridge, &bridge_list, list)
if (bridge->pci_bus == bus) {
+ mutex_unlock(&bridge_mutex);
cleanup_bridge(bridge);
put_bridge(bridge);
- break;
+ return;
}
+
+ mutex_unlock(&bridge_mutex);
}
/**
@@ -1232,51 +1021,39 @@ void acpiphp_remove_slots(struct pci_bus *bus)
*/
int acpiphp_enable_slot(struct acpiphp_slot *slot)
{
- int retval;
-
mutex_lock(&slot->crit_sect);
+ /* configure all functions */
+ if (!(slot->flags & SLOT_ENABLED))
+ enable_slot(slot);
- /* wake up all functions */
- retval = power_on_slot(slot);
- if (retval)
- goto err_exit;
-
- if (get_slot_status(slot) == ACPI_STA_ALL) {
- /* configure all functions */
- retval = enable_device(slot);
- if (retval)
- power_off_slot(slot);
- } else {
- dbg("%s: Slot status is not ACPI_STA_ALL\n", __func__);
- power_off_slot(slot);
- }
-
- err_exit:
mutex_unlock(&slot->crit_sect);
- return retval;
+ return 0;
}
/**
- * acpiphp_disable_slot - power off slot
+ * acpiphp_disable_and_eject_slot - power off and eject slot
* @slot: ACPI PHP slot
*/
-int acpiphp_disable_slot(struct acpiphp_slot *slot)
+int acpiphp_disable_and_eject_slot(struct acpiphp_slot *slot)
{
+ struct acpiphp_func *func;
int retval = 0;
mutex_lock(&slot->crit_sect);
/* unconfigure all functions */
- retval = disable_device(slot);
- if (retval)
- goto err_exit;
+ disable_slot(slot);
+
+ list_for_each_entry(func, &slot->funcs, sibling)
+ if (func->flags & FUNC_HAS_EJ0) {
+ acpi_handle handle = func_to_handle(func);
- /* power off all functions */
- retval = power_off_slot(slot);
- if (retval)
- goto err_exit;
+ if (ACPI_FAILURE(acpi_evaluate_ej0(handle)))
+ acpi_handle_err(handle, "_EJ0 failed\n");
+
+ break;
+ }
- err_exit:
mutex_unlock(&slot->crit_sect);
return retval;
}
@@ -1288,7 +1065,7 @@ int acpiphp_disable_slot(struct acpiphp_slot *slot)
*/
u8 acpiphp_get_power_status(struct acpiphp_slot *slot)
{
- return (slot->flags & SLOT_POWEREDON);
+ return (slot->flags & SLOT_ENABLED);
}
@@ -1298,11 +1075,7 @@ u8 acpiphp_get_power_status(struct acpiphp_slot *slot)
*/
u8 acpiphp_get_latch_status(struct acpiphp_slot *slot)
{
- unsigned int sta;
-
- sta = get_slot_status(slot);
-
- return (sta & ACPI_STA_DEVICE_UI) ? 0 : 1;
+ return !(get_slot_status(slot) & ACPI_STA_DEVICE_UI);
}
@@ -1312,9 +1085,5 @@ u8 acpiphp_get_latch_status(struct acpiphp_slot *slot)
*/
u8 acpiphp_get_adapter_status(struct acpiphp_slot *slot)
{
- unsigned int sta;
-
- sta = get_slot_status(slot);
-
- return (sta == 0) ? 0 : 1;
+ return !!get_slot_status(slot);
}
diff --git a/drivers/pci/hotplug/acpiphp_ibm.c b/drivers/pci/hotplug/acpiphp_ibm.c
index c35e8ad6db01..2f5786c8522c 100644
--- a/drivers/pci/hotplug/acpiphp_ibm.c
+++ b/drivers/pci/hotplug/acpiphp_ibm.c
@@ -66,7 +66,7 @@ do { \
#define IBM_HARDWARE_ID1 "IBM37D0"
#define IBM_HARDWARE_ID2 "IBM37D4"
-#define hpslot_to_sun(A) (((struct slot *)((A)->private))->acpi_slot->sun)
+#define hpslot_to_sun(A) (((struct slot *)((A)->private))->sun)
/* union apci_descriptor - allows access to the
* various device descriptors that are embedded in the
@@ -270,7 +270,6 @@ static void ibm_handle_events(acpi_handle handle, u32 event, void *context)
if (subevent == 0x80) {
dbg("%s: generationg bus event\n", __func__);
- acpi_bus_generate_proc_event(note->device, note->event, detail);
acpi_bus_generate_netlink_event(note->device->pnp.device_class,
dev_name(&note->device->dev),
note->event, detail);
diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c
index 01e264fb50e0..7c29ee4ed0ae 100644
--- a/drivers/pci/pci-acpi.c
+++ b/drivers/pci/pci-acpi.c
@@ -210,7 +210,7 @@ static int acpi_pci_set_power_state(struct pci_dev *dev, pci_power_t state)
}
if (!error)
- dev_info(&dev->dev, "power state changed by ACPI to %s\n",
+ dev_dbg(&dev->dev, "power state changed by ACPI to %s\n",
acpi_power_state_string(state_conv[state]));
return error;
@@ -290,24 +290,16 @@ static struct pci_platform_pm_ops acpi_pci_platform_pm = {
void acpi_pci_add_bus(struct pci_bus *bus)
{
- acpi_handle handle = NULL;
-
- if (bus->bridge)
- handle = ACPI_HANDLE(bus->bridge);
- if (acpi_pci_disabled || handle == NULL)
+ if (acpi_pci_disabled || !bus->bridge)
return;
- acpi_pci_slot_enumerate(bus, handle);
- acpiphp_enumerate_slots(bus, handle);
+ acpi_pci_slot_enumerate(bus);
+ acpiphp_enumerate_slots(bus);
}
void acpi_pci_remove_bus(struct pci_bus *bus)
{
- /*
- * bus->bridge->acpi_node.handle has already been reset to NULL
- * when acpi_pci_remove_bus() is called, so don't check ACPI handle.
- */
- if (acpi_pci_disabled)
+ if (acpi_pci_disabled || !bus->bridge)
return;
acpiphp_remove_slots(bus);
diff --git a/drivers/platform/x86/asus-laptop.c b/drivers/platform/x86/asus-laptop.c
index 8e268da6fdbd..0e9c169b42f8 100644
--- a/drivers/platform/x86/asus-laptop.c
+++ b/drivers/platform/x86/asus-laptop.c
@@ -1543,7 +1543,6 @@ static void asus_acpi_notify(struct acpi_device *device, u32 event)
/* TODO Find a better way to handle events count. */
count = asus->event_count[event % 128]++;
- acpi_bus_generate_proc_event(asus->device, event, count);
acpi_bus_generate_netlink_event(asus->device->pnp.device_class,
dev_name(&asus->device->dev), event,
count);
diff --git a/drivers/platform/x86/eeepc-laptop.c b/drivers/platform/x86/eeepc-laptop.c
index 5d26e70bed6c..a6afd4108beb 100644
--- a/drivers/platform/x86/eeepc-laptop.c
+++ b/drivers/platform/x86/eeepc-laptop.c
@@ -1269,7 +1269,6 @@ static void eeepc_acpi_notify(struct acpi_device *device, u32 event)
if (event > ACPI_MAX_SYS_NOTIFY)
return;
count = eeepc->event_count[event % 128]++;
- acpi_bus_generate_proc_event(device, event, count);
acpi_bus_generate_netlink_event(device->pnp.device_class,
dev_name(&device->dev), event,
count);
diff --git a/drivers/platform/x86/fujitsu-laptop.c b/drivers/platform/x86/fujitsu-laptop.c
index 1c9386e7c58c..52b8a97efde1 100644
--- a/drivers/platform/x86/fujitsu-laptop.c
+++ b/drivers/platform/x86/fujitsu-laptop.c
@@ -773,8 +773,6 @@ static void acpi_fujitsu_notify(struct acpi_device *device, u32 event)
else
set_lcd_level(newb);
}
- acpi_bus_generate_proc_event(fujitsu->dev,
- ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS, 0);
keycode = KEY_BRIGHTNESSUP;
} else if (oldb > newb) {
if (disable_brightness_adjust != 1) {
@@ -783,8 +781,6 @@ static void acpi_fujitsu_notify(struct acpi_device *device, u32 event)
else
set_lcd_level(newb);
}
- acpi_bus_generate_proc_event(fujitsu->dev,
- ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS, 0);
keycode = KEY_BRIGHTNESSDOWN;
}
break;
diff --git a/drivers/platform/x86/panasonic-laptop.c b/drivers/platform/x86/panasonic-laptop.c
index 4add9a31bf60..984253da365d 100644
--- a/drivers/platform/x86/panasonic-laptop.c
+++ b/drivers/platform/x86/panasonic-laptop.c
@@ -464,9 +464,6 @@ static void acpi_pcc_generate_keyinput(struct pcc_acpi *pcc)
"error getting hotkey status\n"));
return;
}
-
- acpi_bus_generate_proc_event(pcc->device, HKEY_NOTIFY, result);
-
if (!sparse_keymap_report_event(hotk_input_dev,
result & 0xf, result & 0x80, false))
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
diff --git a/drivers/platform/x86/sony-laptop.c b/drivers/platform/x86/sony-laptop.c
index 3a1b6bf326a8..d3fd52036fd6 100644
--- a/drivers/platform/x86/sony-laptop.c
+++ b/drivers/platform/x86/sony-laptop.c
@@ -1275,9 +1275,6 @@ static void sony_nc_notify(struct acpi_device *device, u32 event)
ev_type = HOTKEY;
sony_laptop_report_input_event(real_ev);
}
-
- acpi_bus_generate_proc_event(sony_nc_acpi_device, ev_type, real_ev);
-
acpi_bus_generate_netlink_event(sony_nc_acpi_device->pnp.device_class,
dev_name(&sony_nc_acpi_device->dev), ev_type, real_ev);
}
@@ -4246,7 +4243,6 @@ static irqreturn_t sony_pic_irq(int irq, void *dev_id)
found:
sony_laptop_report_input_event(device_event);
- acpi_bus_generate_proc_event(dev->acpi_dev, 1, device_event);
sonypi_compat_report_event(device_event);
return IRQ_HANDLED;
}
diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index 54d31c0a9840..be67e5e28d18 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -2022,8 +2022,6 @@ static u32 hotkey_driver_mask; /* events needed by the driver */
static u32 hotkey_user_mask; /* events visible to userspace */
static u32 hotkey_acpi_mask; /* events enabled in firmware */
-static unsigned int hotkey_report_mode;
-
static u16 *hotkey_keycode_map;
static struct attribute_set *hotkey_dev_attributes;
@@ -2282,10 +2280,6 @@ static struct tp_acpi_drv_struct ibm_hotkey_acpidriver;
static void tpacpi_hotkey_send_key(unsigned int scancode)
{
tpacpi_input_send_key_masked(scancode);
- if (hotkey_report_mode < 2) {
- acpi_bus_generate_proc_event(ibm_hotkey_acpidriver.device,
- 0x80, TP_HKEY_EV_HOTKEY_BASE + scancode);
- }
}
static void hotkey_read_nvram(struct tp_nvram_state *n, const u32 m)
@@ -2882,18 +2876,6 @@ static void hotkey_tablet_mode_notify_change(void)
"hotkey_tablet_mode");
}
-/* sysfs hotkey report_mode -------------------------------------------- */
-static ssize_t hotkey_report_mode_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- return snprintf(buf, PAGE_SIZE, "%d\n",
- (hotkey_report_mode != 0) ? hotkey_report_mode : 1);
-}
-
-static struct device_attribute dev_attr_hotkey_report_mode =
- __ATTR(hotkey_report_mode, S_IRUGO, hotkey_report_mode_show, NULL);
-
/* sysfs wakeup reason (pollable) -------------------------------------- */
static ssize_t hotkey_wakeup_reason_show(struct device *dev,
struct device_attribute *attr,
@@ -2935,7 +2917,6 @@ static struct attribute *hotkey_attributes[] __initdata = {
&dev_attr_hotkey_enable.attr,
&dev_attr_hotkey_bios_enabled.attr,
&dev_attr_hotkey_bios_mask.attr,
- &dev_attr_hotkey_report_mode.attr,
&dev_attr_hotkey_wakeup_reason.attr,
&dev_attr_hotkey_wakeup_hotunplug_complete.attr,
&dev_attr_hotkey_mask.attr,
@@ -3439,11 +3420,6 @@ static int __init hotkey_init(struct ibm_init_struct *iibm)
"initial masks: user=0x%08x, fw=0x%08x, poll=0x%08x\n",
hotkey_user_mask, hotkey_acpi_mask, hotkey_source_mask);
- dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
- "legacy ibm/hotkey event reporting over procfs %s\n",
- (hotkey_report_mode < 2) ?
- "enabled" : "disabled");
-
tpacpi_inputdev->open = &hotkey_inputdev_open;
tpacpi_inputdev->close = &hotkey_inputdev_close;
@@ -3737,13 +3713,6 @@ static void hotkey_notify(struct ibm_struct *ibm, u32 event)
"event happened to %s\n", TPACPI_MAIL);
}
- /* Legacy events */
- if (!ignore_acpi_ev &&
- (send_acpi_ev || hotkey_report_mode < 2)) {
- acpi_bus_generate_proc_event(ibm->acpi->device,
- event, hkey);
- }
-
/* netlink events */
if (!ignore_acpi_ev && send_acpi_ev) {
acpi_bus_generate_netlink_event(
@@ -8840,11 +8809,6 @@ module_param(brightness_enable, uint, 0444);
MODULE_PARM_DESC(brightness_enable,
"Enables backlight control when 1, disables when 0");
-module_param(hotkey_report_mode, uint, 0444);
-MODULE_PARM_DESC(hotkey_report_mode,
- "used for backwards compatibility with userspace, "
- "see documentation");
-
#ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT
module_param_named(volume_mode, volume_mode, uint, 0444);
MODULE_PARM_DESC(volume_mode,
@@ -8975,10 +8939,6 @@ static int __init thinkpad_acpi_module_init(void)
tpacpi_lifecycle = TPACPI_LIFE_INIT;
- /* Parameter checking */
- if (hotkey_report_mode > 2)
- return -EINVAL;
-
/* Driver-level probe */
ret = get_thinkpad_model_data(&thinkpad_id);
diff --git a/drivers/pnp/driver.c b/drivers/pnp/driver.c
index 00e94032531a..12adb43a0693 100644
--- a/drivers/pnp/driver.c
+++ b/drivers/pnp/driver.c
@@ -154,7 +154,7 @@ static int pnp_bus_match(struct device *dev, struct device_driver *drv)
return 1;
}
-static int pnp_bus_suspend(struct device *dev, pm_message_t state)
+static int __pnp_bus_suspend(struct device *dev, pm_message_t state)
{
struct pnp_dev *pnp_dev = to_pnp_dev(dev);
struct pnp_driver *pnp_drv = pnp_dev->driver;
@@ -180,6 +180,16 @@ static int pnp_bus_suspend(struct device *dev, pm_message_t state)
return 0;
}
+static int pnp_bus_suspend(struct device *dev)
+{
+ return __pnp_bus_suspend(dev, PMSG_SUSPEND);
+}
+
+static int pnp_bus_freeze(struct device *dev)
+{
+ return __pnp_bus_suspend(dev, PMSG_FREEZE);
+}
+
static int pnp_bus_resume(struct device *dev)
{
struct pnp_dev *pnp_dev = to_pnp_dev(dev);
@@ -210,14 +220,19 @@ static int pnp_bus_resume(struct device *dev)
return 0;
}
+static const struct dev_pm_ops pnp_bus_dev_pm_ops = {
+ .suspend = pnp_bus_suspend,
+ .freeze = pnp_bus_freeze,
+ .resume = pnp_bus_resume,
+};
+
struct bus_type pnp_bus_type = {
.name = "pnp",
.match = pnp_bus_match,
.probe = pnp_device_probe,
.remove = pnp_device_remove,
.shutdown = pnp_device_shutdown,
- .suspend = pnp_bus_suspend,
- .resume = pnp_bus_resume,
+ .pm = &pnp_bus_dev_pm_ops,
.dev_attrs = pnp_interface_attrs,
};
diff --git a/drivers/pnp/pnpacpi/core.c b/drivers/pnp/pnpacpi/core.c
index 55cd459a3908..34049b0b4c73 100644
--- a/drivers/pnp/pnpacpi/core.c
+++ b/drivers/pnp/pnpacpi/core.c
@@ -131,7 +131,7 @@ static int pnpacpi_disable_resources(struct pnp_dev *dev)
/* acpi_unregister_gsi(pnp_irq(dev, 0)); */
ret = 0;
if (acpi_bus_power_manageable(handle))
- acpi_bus_set_power(handle, ACPI_STATE_D3);
+ acpi_bus_set_power(handle, ACPI_STATE_D3_COLD);
/* continue even if acpi_bus_set_power() fails */
if (ACPI_FAILURE(acpi_evaluate_object(handle, "_DIS", NULL, NULL)))
ret = -ENODEV;
@@ -174,10 +174,10 @@ static int pnpacpi_suspend(struct pnp_dev *dev, pm_message_t state)
if (acpi_bus_power_manageable(handle)) {
int power_state = acpi_pm_device_sleep_state(&dev->dev, NULL,
- ACPI_STATE_D3);
+ ACPI_STATE_D3_COLD);
if (power_state < 0)
power_state = (state.event == PM_EVENT_ON) ?
- ACPI_STATE_D0 : ACPI_STATE_D3;
+ ACPI_STATE_D0 : ACPI_STATE_D3_COLD;
/*
* acpi_bus_set_power() often fails (keyboard port can't be
diff --git a/drivers/xen/acpi.c b/drivers/xen/acpi.c
index 119d42a2bf57..90307c0b630c 100644
--- a/drivers/xen/acpi.c
+++ b/drivers/xen/acpi.c
@@ -35,28 +35,43 @@
#include <asm/xen/hypercall.h>
#include <asm/xen/hypervisor.h>
-int xen_acpi_notify_hypervisor_state(u8 sleep_state,
- u32 pm1a_cnt, u32 pm1b_cnt)
+static int xen_acpi_notify_hypervisor_state(u8 sleep_state,
+ u32 val_a, u32 val_b,
+ bool extended)
{
+ unsigned int bits = extended ? 8 : 16;
+
struct xen_platform_op op = {
.cmd = XENPF_enter_acpi_sleep,
.interface_version = XENPF_INTERFACE_VERSION,
- .u = {
- .enter_acpi_sleep = {
- .pm1a_cnt_val = (u16)pm1a_cnt,
- .pm1b_cnt_val = (u16)pm1b_cnt,
- .sleep_state = sleep_state,
- },
+ .u.enter_acpi_sleep = {
+ .val_a = (u16)val_a,
+ .val_b = (u16)val_b,
+ .sleep_state = sleep_state,
+ .flags = extended ? XENPF_ACPI_SLEEP_EXTENDED : 0,
},
};
- if ((pm1a_cnt & 0xffff0000) || (pm1b_cnt & 0xffff0000)) {
- WARN(1, "Using more than 16bits of PM1A/B 0x%x/0x%x!"
- "Email xen-devel@lists.xensource.com Thank you.\n", \
- pm1a_cnt, pm1b_cnt);
+ if (WARN((val_a & (~0 << bits)) || (val_b & (~0 << bits)),
+ "Using more than %u bits of sleep control values %#x/%#x!"
+ "Email xen-devel@lists.xen.org - Thank you.\n", \
+ bits, val_a, val_b))
return -1;
- }
HYPERVISOR_dom0_op(&op);
return 1;
}
+
+int xen_acpi_notify_hypervisor_sleep(u8 sleep_state,
+ u32 pm1a_cnt, u32 pm1b_cnt)
+{
+ return xen_acpi_notify_hypervisor_state(sleep_state, pm1a_cnt,
+ pm1b_cnt, false);
+}
+
+int xen_acpi_notify_hypervisor_extended_sleep(u8 sleep_state,
+ u32 val_a, u32 val_b)
+{
+ return xen_acpi_notify_hypervisor_state(sleep_state, val_a,
+ val_b, true);
+}
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