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'thermal-fix', 'wmi' and 'acpi-cleanups' into release-2.6.27
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Trivial cleanups for ACPI. Fix misspelling in printk(), fix mismerge,
add file header.
AK: removed file header
Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
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Although the necessary data structure was set up, it was never actually
passed in, so data block calls have only been working by sheer chance.
(On Acer laptops. the data block methods we've been calling never look at
the instance value, hence acer-wmi never triggered this before).
f3454ae8104efb2dbf0d08ec42c6f5d0fe9225bc brought this to light.
Signed-off-by: Carlos Corbacho <carlos@strangeworlds.co.uk>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
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Do not use unsigned int if there is test for negative number...
See drivers/acpi/processor_perflib.c
static unsigned int ignore_ppc = -1;
...
if (event == CPUFREQ_START && ignore_ppc <= 0) {
ignore_ppc = 0;
...
Signed-off-by: Milan Broz <mbroz@redhat.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
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acpi_penalize_isa_irq() should validate irq before using it to
index the acpi_irq_penalty[] table.
Here's the path I'm concerned about:
pnpacpi_parse_allocated_irqresource()
{
...
irq = acpi_register_gsi(gsi, triggering, polarity);
if (irq >= 0)
pcibios_penalize_isa_irq(irq, 1);
There's no guarantee that acpi_register_gsi() will return an IRQ
within the bounds of acpi_irq_penalty[].
I have not seen a failure I can attribute to this. However,
ACPI_MAX_IRQS is only 256, and I'm pretty sure ia64 can have
IRQs larger than that.
I think this should go in 2.6.27.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
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Some devices emit a ACPI_NOTIFY_DEVICE_CHECK while physically unplugging
even if the software undock has already been done and dock_present() check
fails. However, the internal flags need to be cleared (complete_undock()).
Also, even notify userspace if the dock station suddently went away
without proper software undocking.
This happens on a Acer TravelMate 3000
Signed-off-by: Holger Macht <hmacht@suse.de>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
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When EC is in Polling mode, OS will check the EC status continually by using
the following source code:
clear_bit(EC_FLAGS_WAIT_GPE, &ec->flags);
while (time_before(jiffies, delay)) {
if (acpi_ec_check_status(ec, event))
return 0;
msleep(1);
}
But msleep is realized by the function of schedule_timeout. At the same time
although one process is already waken up by some events, it won't be scheduled
immediately. So maybe there exists the following phenomena:
a. The current jiffies is already after the predefined jiffies.
But before timeout happens, OS has no chance to check the EC
status again.
b. If preemptible schedule is enabled, maybe preempt schedule will happen
before checking loop. When the process is resumed again, maybe
timeout already happens, which means that OS has no chance to check
the EC status.
In such case maybe EC status is already what OS expects when timeout happens.
But OS has no chance to check the EC status and regards it as AE_TIME.
So it will be more appropriate that OS will try to check the EC status again
when timeout happens. If the EC status is what we expect, it won't be regarded
as timeout. Only when the EC status is not what we expect, it will be regarded
as timeout, which means that EC controller can't give a response in time.
http://bugzilla.kernel.org/show_bug.cgi?id=9823
http://bugzilla.kernel.org/show_bug.cgi?id=11141
Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
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On some ASUS laptops the ECDT gives the incorrect command/status & Data I/O
register address.
AK: it seems like the command/data addresses are exchanged.
In such case it will cause that EC device can't be
initialized correctly.
To add the EC dmi table is to fix this issue. If the laptop falls into the
EC dmi table, the EC command/data I/O address will be fixed.
AK: Add comments describing this better
http://bugzilla.kernel.org/show_bug.cgi?id=9399
Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
tested-by : Jan Kasprzak <kas@fi.muni.cz>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
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Add error check after all calls to acpi_ns_get_pathname_length.
Add status return from acpi_ns_build_external_path and check after
all calls. Add parameter validation to acpi_ut_initialize_buffer.
Reported by and initial patch by Ingo Molnar.
http://lkml.org/lkml/2008/7/21/176
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
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The DdbHandle returned by Load() does not have its reference count
decremented during unload, leading to a memory leak. Lin Ming.
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
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Fixes a possible memory leak when thermal and processor objects
are deleted. Any associated notify handlers (and objects) were
not being deleted. Fiodor Suietov. BZ 506
http://www.acpica.org/bugzilla/show_bug.cgi?id=506
Signed-off-by: Fiodor Suietov <fiodor.f.suietov@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
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Some module parameters with only one line have the '\n' at the end of the
description. This is not needed nor wanted as after the description the
type (i.e. int) is followed by a newline.
Some modules contain a multi-line description, these are not affected
by this patch.
Signed-off-by: Niels de Vos <niels.devos@wincor-nixdorf.com>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: John W. Linville <linville@tuxdriver.com>
Cc: Ed L. Cashin <ecashin@coraid.com>
Cc: Dave Airlie <airlied@linux.ie>
Cc: Roland Dreier <rolandd@cisco.com>
Acked-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Signed-off-by: Thomas Renninger <trenn@suse.de>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Len Brown <lenb@kernel.org>
Cc: Dave Jones <davej@codemonkey.org.uk>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Ingo Molnar provided a fix to not call _PPC at processor driver
initialization time in "[PATCH] ACPI: fix cpufreq regression" (git
commit e4233dec749a3519069d9390561b5636a75c7579)
But it can still happen that _PPC is called at processor driver
initialization time.
This patch should make sure that this is not possible anymore.
Signed-off-by: Thomas Renninger <trenn@suse.de>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Len Brown <lenb@kernel.org>
Cc: Dave Jones <davej@codemonkey.org.uk>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: (21 commits)
x86/PCI: use dev_printk when possible
PCI: add D3 power state avoidance quirk
PCI: fix bogus "'device' may be used uninitialized" warning in pci_slot
PCI: add an option to allow ASPM enabled forcibly
PCI: disable ASPM on pre-1.1 PCIe devices
PCI: disable ASPM per ACPI FADT setting
PCI MSI: Don't disable MSIs if the mask bit isn't supported
PCI: handle 64-bit resources better on 32-bit machines
PCI: rewrite PCI BAR reading code
PCI: document pci_target_state
PCI hotplug: fix typo in pcie hotplug output
x86 gart: replace to_pages macro with iommu_num_pages
x86, AMD IOMMU: replace to_pages macro with iommu_num_pages
iommu: add iommu_num_pages helper function
dma-coherent: add documentation to new interfaces
Cris: convert to using generic dma-coherent mem allocator
Sh: use generic per-device coherent dma allocator
ARM: support generic per-device coherent dma mem
Generic dma-coherent: fix DMA_MEMORY_EXCLUSIVE
x86: use generic per-device dma coherent allocator
...
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I get warnings about 'device' possibly being used uninitialised. While
I can deduce this is not true, it seems that GCC can't. This patch
changes `check_slot' to return device on success and -1 on error, which
shuts GCC up.
Acked-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
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Conflicts:
kernel/stop_machine.c
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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pm_idle_save resp. pm_idle_old can be NULL when the restore code in
acpi_processor_cst_has_changed() resp. cpuidle_uninstall_idle_handler()
is called. This can set pm_idle unconditinally to NULL, which causes the
kernel to panic when calling pm_idle in the x86 idle code. This was
covered by an extra check for !pm_idle in the x86 idle code, which was
removed during the x86 idle code refactoring.
Instead of restoring the pm_idle check in the x86 code prevent the
acpi/cpuidle code to set pm_idle to NULL.
Reported by: Dhaval Giani http://lkml.org/lkml/2008/7/2/309
Based on a debug patch from Ingo Molnar
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
ftrace: fix modular build
ftrace: disable tracing on acpi idle calls
ftrace: remove latency-tracer leftover
ftrace: only trace preempt off with preempt tracer
ftrace: fix 4d3702b6 (post-v2.6.26): WARNING: at kernel/lockdep.c:2731 check_flags (ftrace)
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The acpi idle waits calls local_irq_save and then uses mwait to go into
idle. The tracer gets reenabled at local_irq_save but does not detect that
the idle allows for wake ups.
This patch adds code to disable the tracing when acpi puts the CPU to idle.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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* Replace previous instances of the cpumask_of_cpu_ptr* macros
with a the new (lvalue capable) generic cpumask_of_cpu().
Signed-off-by: Mike Travis <travis@sgi.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Jack Steiner <steiner@sgi.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-acpi-2.6
* 'release-2.6.27' of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-acpi-2.6:
acpi: fix crash in core ACPI code, triggered by CONFIG_ACPI_PCI_SLOT=y
ACPI: thinkpad-acpi: don't misdetect in get_thinkpad_model_data() on -ENOMEM
ACPI: thinkpad-acpi: bump up version to 0.21
ACPI: thinkpad-acpi: add bluetooth and WWAN rfkill support
ACPI: thinkpad-acpi: WLSW overrides other rfkill switches
ACPI: thinkpad-acpi: prepare for bluetooth and wwan rfkill support
ACPI: thinkpad-acpi: consolidate wlsw notification function
ACPI: thinkpad-acpi: minor refactor on radio switch init
Revert "ACPI: don't walk tables if ACPI was disabled"
Revert "dock: bay: Don't call acpi_walk_namespace() when ACPI is disabled."
Revert "Fix FADT parsing"
ACPI : Set FAN device to correct state in boot phase
ACPI: Ignore _BQC object when registering backlight device
ACPI: stop complaints about interrupt link End Tags and blank IRQ descriptors
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-tip testing found the following boot crash on 32-bit x86 (Core2Duo
laptop) yesterday:
[ 5.606664] scsi4 : ata_piix
[ 5.606664] scsi5 : ata_piix
[ 5.606664] ACPI Error (psargs-0358): [\_SB_.PCI0.LPC_.EC__.BSTA] Namespace lookup failure, AE_NOT_FOUND
[ 5.606664] ACPI Error (psparse-0530): ACPI Error (nsnames-0186): Invalid NS Node (f7c0e960) while traversing path [20080609]
[ 5.606664] BUG: unable to handle kernel NULL pointer dereference at 0000000f
[ 5.606664] IP: [<80339e2f>] acpi_ns_build_external_path+0x1f/0x80
[ 5.609997] *pdpt = 0000000000a03001 *pde = 0000000000000000
[ 5.609997] Oops: 0002 [#1] SMP
[ 5.609997]
[ 5.609997] Pid: 1, comm: swapper Not tainted (2.6.26-tip-03965-gbbfb62e-dirty #3153)
[ 5.609997] EIP: 0060:[<80339e2f>] EFLAGS: 00010286 CPU: 0
[ 5.609997] EIP is at acpi_ns_build_external_path+0x1f/0x80
[ 5.609997] EAX: f7c18c18 EBX: ffffffff ECX: 00000010 EDX: 00000000
[ 5.609997] ESI: f7c18c18 EDI: 00000010 EBP: f7c4dc28 ESP: f7c4dc18
[ 5.609997] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
[ 5.609997] Process swapper (pid: 1, ti=f7c4c000 task=f7c50000 task.ti=f7c4c000)
[ 5.609997] Stack: 00000000 00000000 f7c18c18 f7c4dc48 f7c4dc40 80339ed0 00000000 f7c18c18
[ 5.609997] 8084c1b6 8084c1b6 f7c4dc58 8033a60a 00000000 00000010 00000000 f7c18c18
[ 5.609997] f7c4dc70 8033a68f f7c18c18 00000000 f6de7600 00000005 f7c4dc98 8033c34d
[ 5.609997] Call Trace:
[ 5.609997] [<80339ed0>] ? acpi_ns_handle_to_pathname+0x40/0x72
[ 5.609997] [<8033a60a>] ? acpi_ns_print_node_pathname+0x2c/0x61
[ 5.609997] [<8033a68f>] ? acpi_ns_report_method_error+0x50/0x6d
[ 5.609997] [<8033c34d>] ? acpi_ps_parse_aml+0x149/0x2f9
[ 5.609997] [<8033d6dd>] ? acpi_ps_execute_method+0x132/0x201
[ 5.609997] [<80339d19>] ? acpi_ns_evaluate+0x1ad/0x258
[ 5.609997] [<803406c4>] ? acpi_ut_evaluate_object+0x55/0x18f
[ 5.609997] [<803408b7>] ? acpi_ut_execute_STA+0x22/0x7a
[ 5.609997] [<8033a907>] ? acpi_get_object_info+0x131/0x1be
[ 5.609997] [<80344bb2>] ? do_acpi_find_child+0x22/0x4b
[ 5.609997] [<8033b855>] ? acpi_ns_walk_namespace+0xa5/0x124
[ 5.609997] [<803394f3>] ? acpi_walk_namespace+0x54/0x74
[ 5.609997] [<80344b90>] ? do_acpi_find_child+0x0/0x4b
[ 5.609997] [<80344b85>] ? acpi_get_child+0x38/0x43
[ 5.609997] [<80344b90>] ? do_acpi_find_child+0x0/0x4b
[ 5.609997] [<804d0148>] ? ata_acpi_associate+0xb5/0x1b5
[ 5.609997] [<804c6ecb>] ? ata_scsi_add_hosts+0x8e/0xdc
[ 5.609997] [<804c40c8>] ? ata_host_register+0x9f/0x1d6
[ 5.609997] [<804cbc7f>] ? ata_pci_sff_activate_host+0x179/0x19f
[ 5.609997] [<804cdd45>] ? ata_sff_interrupt+0x0/0x1c7
[ 5.609997] [<8069b033>] ? piix_init_one+0x569/0x5b0
[ 5.609997] [<801bd400>] ? sysfs_ilookup_test+0x0/0x11
[ 5.609997] [<801987d7>] ? ilookup5_nowait+0x29/0x30
[ 5.609997] [<802efc7e>] ? pci_match_device+0x99/0xa3
[ 5.609997] [<802efd3c>] ? pci_device_probe+0x39/0x59
[ 5.609997] [<803bc4af>] ? driver_probe_device+0xa0/0x11b
[ 5.609997] [<803bc564>] ? __driver_attach+0x3a/0x59
[ 5.609997] [<803bbde3>] ? bus_for_each_dev+0x36/0x58
[ 5.609997] [<803bc354>] ? driver_attach+0x14/0x16
[ 5.609997] [<803bc52a>] ? __driver_attach+0x0/0x59
[ 5.609997] [<803bc161>] ? bus_add_driver+0x93/0x196
[ 5.609997] [<803bc773>] ? driver_register+0x71/0xcd
[ 5.609997] [<802eff05>] ? __pci_register_driver+0x3f/0x6e
[ 5.609997] [<809af7ff>] ? piix_init+0x14/0x24
[ 5.609997] [<80984568>] ? kernel_init+0x128/0x269
[ 5.609997] [<809af7eb>] ? piix_init+0x0/0x24
[ 5.609997] [<802e2758>] ? trace_hardirqs_on_thunk+0xc/0x10
[ 5.609997] [<80116aef>] ? restore_nocheck_notrace+0x0/0xe
[ 5.609997] [<80984440>] ? kernel_init+0x0/0x269
[ 5.609997] [<80984440>] ? kernel_init+0x0/0x269
[ 5.609997] [<80117d87>] ? kernel_thread_helper+0x7/0x10
[ 5.609997] =======================
[ 5.609997] Code: 75 02 b3 01 8d 43 01 8b 5d fc c9 c3 55 89 e5 57 89 cf 56 53 89 d3 4b 83 ec 04 83 fb 03 89 55 f0 77 09 c6 01 5c c6 41 01 00 eb 59 <c6> 04 19 00 8b 55 f0 8d 34 11 89 c2 eb 19 8b 42 08 83 eb 05 89
[ 5.609997] EIP: [<80339e2f>] acpi_ns_build_external_path+0x1f/0x80 SS:ESP 0068:f7c4dc18
[ 5.613331] Kernel panic - not syncing: Fatal exception
[ 5.613331] Rebooting in 1 seconds..[ 4.646664] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
I have bisected it down to:
# bad: [5b664cbe] Merge branch 'upstream-linus' of git://git.kernel.
# good: [bce7f795] Linux 2.6.26
# good: [e18425ab] Merge branch 'tracing/for-linus' of git://git.kern
# good: [cadc7236] Merge branch 'bkl-removal' into next
# good: [4515889a] Merge branch 'merge' of git://git.kernel.org/pub/s
# good: [42fdd14e] Merge git://git.kernel.org/pub/scm/linux/kernel/gi
# good: [8a0ca91f] Merge branch 'for-linus' of git://git.kernel.org/p
# bad: [0af4b8cb] ACPI: Introduce new device wakeup flag 'prepared'
# good: [fe997407] PCI: construct one fakephp slot per PCI slot
# bad: [531f254a] PCIE: aer: use dev_printk when possible
# bad: [15650a20] x86/PCI: fixup early quirk probing
# good: [0e6859d9] ACPI PM: Remove obsolete Toshiba workaround
# bad: [8344b566] PCI: ACPI PCI slot detection driver
# good: [f46753c9] PCI: introduce pci_slot
| 8344b568f5bdc7ee1bba909de3294c6348c36056 is first bad commit
| commit 8344b568f5bdc7ee1bba909de3294c6348c36056
| Author: Alex Chiang <achiang@hp.com>
| Date: Tue Jun 10 15:30:42 2008 -0600
|
| PCI: ACPI PCI slot detection driver
|
| Detect all physical PCI slots as described by ACPI, and create entries in
| /sys/bus/pci/slots/.
I.e. the new CONFIG_ACPI_PCI_SLOT=y option was causing this crash.
But the bug is not mainly in this new PCI code - that code was just
hitting the ACPI code in a new way which made ACPI break.
The crash signature shows that we are crashing on this instruction:
movb $0x0, (%ecx, %ebx, 1)
ECX and EBX are 0x10 and -1. It's this line in
drivers/acpi/namespace/nsnames.c's acpi_ns_build_external_path():
name_buffer[index] = 0;
I.e. name_buffer is 0x10 and index is -1.
index -1 corresponds to size 0, and name_buffer 0x10 is slab's
ZERO_SIZE_PTR special-case for zero-sized allocations.
I.e. when we called acpi_ns_handle_to_pathname(), we got required_size
of 0 due to an error condition, but this is passed to the ACPI allocator
unconditionally:
required_size = acpi_ns_get_pathname_length(node);
/* Validate/Allocate/Clear caller buffer */
status = acpi_ut_initialize_buffer(buffer, required_size);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
Where acpi_ut_initialize_buffer(), through many (unnecessary) layers,
ends up calling kzalloc(0). Which returns 0x10 and that then causes the
crash later on.
So fix both callers of acpi_ns_get_pathname_length(), which can return 0
in case of an invalid node.
Also add a WARN_ON() against zero sized allocations in
acpi_ut_initialize_buffer() to make it easier to find similar instances
of this bug.
I have tested this patch for the past 24 hours and the crash has not
reappeared.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
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This reverts commit d1857056904d5f313f11184fcfa624652ff9620a.
Double commit, noticed by Thomas Gleixner.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
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Subject:ACPI: Set FAN device to correct state in boot phase
From: Zhao Yakui <yakui.zhao@intel.com>
On some laptops when ACPI FAN driver is loaded, maybe the FAN device will be
turned on. But if the temperature is below the threshold, the corresponding
FAN device should be turned off in the course of loading thermal driver.
So it is necessary to set the FAN device to the correct state in course of loading
the thermal driver.
http://bugzilla.kernel.org/show_bug.cgi?id=8049
Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
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According to acpi spec , the objectes of _BCL and _BCM are required if
integrated LCD is present and supports brightness level and the _BQC is
the optional object. So the _BQC object will be ignored when the backlight
device is registered.
At the same time when there is no _BQC object, the current brightness will be
set to the maximum.
http://bugzilla.kernel.org/show_bug.cgi?id=10206
Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
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Silently ignore _PRS End Tags. We already ignore Start Dependent Functions in
_PRS, and we already ignore End Tags in _CRS, so we might as well ignore End
Tags in _PRS as well.
Silently ignore _PRS IRQ descriptors that mention no interrupts. The spec
allows this (section 6.4.2.1 in ACPI 3.0b spec), and it probably means the
interrupt link can't be configured at all.
This patch doesn't change any functional behavior; it just removes confusing
complaints like these:
ACPI: Blank IRQ resource
ACPI: Resource is not an IRQ entry
when parsing _PRS data "23 00 00 18 79 00" from an IBM xSeries 335 dual
Pentium IV Xeon 2.40 GHz machine. For more details, see
http://bugzilla.kernel.org/show_bug.cgi?id=11049
The "23 00 00 18" part is a three-byte-long small IRQ resource with no bits set
in the IRQ mask ("00 00"), and level-triggered, active low, shareable ("18").
The "79 00" is an End Tag (type 0x7). It is superfluous since there is no
Start Dependent Function tag and there are no resources after it, but it is
harmless.
Thanks to Gabriele Trombetti <g.trombetti.lkrnl1213@logicschema.com>
(aka Kurk) for reporting this and testing the patch.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
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Revert double commit by mistake. Noticed by Thomas Gleixner.
This reverts commit cc7e51666d82aedfd6b9a033ca1a10d71c21f1ca.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
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This reverts commit 01a5bba576b9364b33f61f0cd9fa70c2cf5535e2.
There seem to be some FADTs around with bogus information
in the v2 fields. Revert this patch for now until
this can be properly resolved.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
PCI: fixup sparse endianness warnings in proc.c
PCI PM: make more PCI PM core functionality available to drivers
PCI/DMAR: don't assume presence of RMRRs
PCI hotplug: fix error path in pci_slot's register_slot
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Juha Leppnen noticed that an error path in register_slot() wasn't
returning appropriately, leading to a condition where we might access a
kfree'ed pointer, so let's fix that.
Additionally, fix up the copyright information in the file while
we're in there.
Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
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There are a few BIOSes that we know of already that need to use the ACPI 1.0
suspend order. This appears to be only be a small minority of mostly nVidia
based systems.
Based on observation of Windows behaviour, it's clear that Windows is also
doing maintaining its own list of broken hardware that needs this workaround.
Signed-off-by: Carlos Corbacho <carlos@strangeworlds.co.uk>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Len Brown <lenb@kernel.org>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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ACPI defines a hardware signature. BIOS calculates the signature according to
hardware configure and if hardware changes while hibernated, the signature
will change. In that case, S4 resume should fail.
Still, there may be systems on which this mechanism does not work correctly,
so it is better to provide a workaround for them. For this reason, add a new
switch to the acpi_sleep= command line argument allowing one to disable
hardware signature checking.
[shaohua.li@intel.com: build fix]
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Len Brown <lenb@kernel.org>
Acked-by: Pavel Machek <pavel@ucw.cz>
Cc: <Valdis.Kletnieks@vt.edu>
Cc: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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James Bottomley warns that inclusion of linux/fs.h in a low level
driver was always a danger signal. This patch moves
memory_read_from_buffer() from fs.h to string.h and fixes includes in
existing memory_read_from_buffer() users.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: James Bottomley <James.Bottomley@hansenpartnership.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Bob Moore <robert.moore@intel.com>
Cc: Thomas Renninger <trenn@suse.de>
Cc: Len Brown <lenb@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'cpus4096-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (31 commits)
NR_CPUS: Replace NR_CPUS in speedstep-centrino.c
cpumask: Provide a generic set of CPUMASK_ALLOC macros, FIXUP
NR_CPUS: Replace NR_CPUS in cpufreq userspace routines
NR_CPUS: Replace per_cpu(..., smp_processor_id()) with __get_cpu_var
NR_CPUS: Replace NR_CPUS in arch/x86/kernel/genapic_flat_64.c
NR_CPUS: Replace NR_CPUS in arch/x86/kernel/genx2apic_uv_x.c
NR_CPUS: Replace NR_CPUS in arch/x86/kernel/cpu/proc.c
NR_CPUS: Replace NR_CPUS in arch/x86/kernel/cpu/mcheck/mce_64.c
cpumask: Optimize cpumask_of_cpu in lib/smp_processor_id.c, fix
cpumask: Use optimized CPUMASK_ALLOC macros in the centrino_target
cpumask: Provide a generic set of CPUMASK_ALLOC macros
cpumask: Optimize cpumask_of_cpu in lib/smp_processor_id.c
cpumask: Optimize cpumask_of_cpu in kernel/time/tick-common.c
cpumask: Optimize cpumask_of_cpu in drivers/misc/sgi-xp/xpc_main.c
cpumask: Optimize cpumask_of_cpu in arch/x86/kernel/ldt.c
cpumask: Optimize cpumask_of_cpu in arch/x86/kernel/io_apic_64.c
cpumask: Replace cpumask_of_cpu with cpumask_of_cpu_ptr
Revert "cpumask: introduce new APIs"
cpumask: make for_each_cpu_mask a bit smaller
net: Pass reference to cpumask variable in net/sunrpc/svc.c
...
Fix up trivial conflicts in drivers/cpufreq/cpufreq.c manually
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Conflicts:
net/sunrpc/svc.c
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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* This patch replaces the dangerous lvalue version of cpumask_of_cpu
with new cpumask_of_cpu_ptr macros. These are patterned after the
node_to_cpumask_ptr macros.
In general terms, if there is a cpumask_of_cpu_map[] then a pointer to
the cpumask_of_cpu_map[cpu] entry is used. The cpumask_of_cpu_map
is provided when there is a large NR_CPUS count, reducing
greatly the amount of code generated and stack space used for
cpumask_of_cpu(). The pointer to the cpumask_t value is needed for
calling set_cpus_allowed_ptr() to reduce the amount of stack space
needed to pass the cpumask_t value.
If there isn't a cpumask_of_cpu_map[], then a temporary variable is
declared and filled in with value from cpumask_of_cpu(cpu) as well as
a pointer variable pointing to this temporary variable. Afterwards,
the pointer is used to reference the cpumask value. The compiler
will optimize out the extra dereference through the pointer as well
as the stack space used for the pointer, resulting in identical code.
A good example of the orthogonal usages is in net/sunrpc/svc.c:
case SVC_POOL_PERCPU:
{
unsigned int cpu = m->pool_to[pidx];
cpumask_of_cpu_ptr(cpumask, cpu);
*oldmask = current->cpus_allowed;
set_cpus_allowed_ptr(current, cpumask);
return 1;
}
case SVC_POOL_PERNODE:
{
unsigned int node = m->pool_to[pidx];
node_to_cpumask_ptr(nodecpumask, node);
*oldmask = current->cpus_allowed;
set_cpus_allowed_ptr(current, nodecpumask);
return 1;
}
Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Conflicts:
drivers/acpi/processor_throttling.c
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Conflicts:
arch/x86/xen/smp.c
kernel/sched_rt.c
net/iucv/iucv.c
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Change references from for_each_cpu_mask to for_each_cpu_mask_nr
where appropriate
Reviewed-by: Paul Jackson <pj@sgi.com>
Reviewed-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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We have the dev_printk() variants for this kind of thing, use them
instead of directly trying to access the bus_id field of struct device.
This is done in order to remove bus_id entirely.
Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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commit d1857056904d5f313f11184fcfa624652ff9620a ("ACPI: don't walk
tables if ACPI was disabled") is another superfluous duplicate commit
caused by git -> quilt -> git conversion.
Revert it.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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commit 816c2eda3ce8fa7eb62f22e01e2ec7a3f7d677c0 ("dock: bay: Don't call
acpi_walk_namespace() when ACPI is disabled.") was merged between
2.6.26-rc8 and -rc9)
Due to rebasing the ACPI tree via quilt the same patch got applied again
via commit cc7e51666d82aedfd6b9a033ca1a10d71c21f1ca ("dock: bay: Don't
call acpi_walk_namespace() when ACPI is disabled.")
Revert it, as it is obviously bogus.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6
* 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: (72 commits)
Revert "x86/PCI: ACPI based PCI gap calculation"
PCI: remove unnecessary volatile in PCIe hotplug struct controller
x86/PCI: ACPI based PCI gap calculation
PCI: include linux/pm_wakeup.h for device_set_wakeup_capable
PCI PM: Fix pci_prepare_to_sleep
x86/PCI: Fix PCI config space for domains > 0
Fix acpi_pm_device_sleep_wake() by providing a stub for CONFIG_PM_SLEEP=n
PCI: Simplify PCI device PM code
PCI PM: Introduce pci_prepare_to_sleep and pci_back_from_sleep
PCI ACPI: Rework PCI handling of wake-up
ACPI: Introduce new device wakeup flag 'prepared'
ACPI: Introduce acpi_device_sleep_wake function
PCI: rework pci_set_power_state function to call platform first
PCI: Introduce platform_pci_power_manageable function
ACPI: Introduce acpi_bus_power_manageable function
PCI: make pci_name use dev_name
PCI: handle pci_name() being const
PCI: add stub for pci_set_consistent_dma_mask()
PCI: remove unused arch pcibios_update_resource() functions
PCI: fix pci_setup_device()'s sprinting into a const buffer
...
Fixed up conflicts in various files (arch/x86/kernel/setup_64.c,
arch/x86/pci/irq.c, arch/x86/pci/pci.h, drivers/acpi/sleep/main.c,
drivers/pci/pci.c, drivers/pci/pci.h, include/acpi/acpi_bus.h) from x86
and ACPI updates manually.
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* Introduce function acpi_pm_device_sleep_wake() for enabling and
disabling the system wake-up capability of devices that are power
manageable by ACPI.
* Introduce function acpi_bus_can_wakeup() allowing other (dependent)
subsystems to check if ACPI is able to enable the system wake-up
capability of given device.
* Introduce callback .sleep_wake() in struct pci_platform_pm_ops and
for the ACPI PCI 'driver' make it use acpi_pm_device_sleep_wake().
* Introduce callback .can_wakeup() in struct pci_platform_pm_ops and
for the ACPI 'driver' make it use acpi_bus_can_wakeup().
* Move the PME# handlig code out of pci_enable_wake() and split it
into two functions, pci_pme_capable() and pci_pme_active(),
allowing the caller to check if given device is capable of
generating PME# from given power state and to enable/disable the
device's PME# functionality, respectively.
* Modify pci_enable_wake() to use the new ACPI callbacks and the new
PME#-related functions.
* Drop the generic .platform_enable_wakeup() callback that is not
used any more.
* Introduce device_set_wakeup_capable() that will set the
power.can_wakeup flag of given device.
* Rework PCI device PM initialization so that, if given device is
capable of generating wake-up events, either natively through the
PME# mechanism, or with the help of the platform, its
power.can_wakeup flag is set and its power.should_wakeup flag is
unset as appropriate.
* Make ACPI set the power.can_wakeup flag for devices found to be
wake-up capable by it.
* Make the ACPI wake-up code enable/disable GPEs for devices that
have the wakeup.flags.prepared flag set (which means that their
wake-up power has been enabled).
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
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Introduce additional flag 'prepared' in struct acpi_device_wakeup_flags
and use it to prevent devices from being enable/disabled do wake up the
system multiple times in a row (this does not happen currently, but will
be possible after some of the following patches).
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
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The currect ACPI code attempts to execute _PSW at three different
places and in one of them only it tries to execute _DSW before _PSW,
which is inconsistent with the other two cases.
Move the execution of _DSW and _PSW into a separate function called
acpi_device_sleep_wake() and call it wherever appropriate instead of
executing _DSW and/or _PSW directly.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
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