| Commit message (Collapse) | Author | Age | Files | Lines |
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Signed-off-by: Pavel Machek <pavel@suse.cz>
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Len Brown <len.brown@intel.com>
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list_for_each()
Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
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Remove duplicated warning message in acpi_power_transition()
ACPI: Transitioning device [%s] to D%d\n
This warning message is printed by acpi_bus_set_power() so we don't
need to print it again.
Signed-off-by: Miguel Botón <mboton@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
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.. as it it used only during early boot.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
arch/ia64/kernel/acpi.c | 2 +-
arch/x86/kernel/acpi/boot.c | 4 ++--
drivers/acpi/osl.c | 3 ++-
3 files changed, 5 insertions(+), 4 deletions(-)
Signed-off-by: Len Brown <len.brown@intel.com>
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There have been fixes using _PPC, which seem to unhide a problem
on HP nx6125 (double cpufreq switch freezes the machine for
several seconds).
This one should provide a workaround for the nx6125 and for
possible other machines that show any weird _PPC behaviour.
Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
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The callback function acpi_ns_get_device_callback called from
acpi_get_devices() will check CID's if the HID does not match. This code
has a bug where it requires that all CIDs match the HID. Changed the code
so that any CID match will do.
Signed-off-by: Andrew Patterson <andrew.patterson@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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Level GPE should not be enabled until all work caused by it is done,
e.g. all Notify() methods are completed.
This can be accomplished by appending enable_gpe function to the end
of notify queue.
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Acked-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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move some OSI(Linux) to "disable" from "unknown"
to reduce dmesg lines that we don't really need.
update Acer 5315 comment
update Dell entries, add R200 entry
update Apple entries
Signed-off-by: Len Brown <len.brown@intel.com>
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Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Len Brown <len.brown@intel.com>
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Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Len Brown <len.brown@intel.com>
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...based on additional feedback -- no code change.
Signed-off-by: Len Brown <len.brown@intel.com>
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Use existing dmi_get_system_info(),
Delete duplicate dmi_get_slot()
Spotted-by: Wim Van Sebroeck <wim@iguana.be>
Signed-off-by: Len Brown <len.brown@intel.com>
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dmi_check_system() does sub-string matching using strstr(),
rather than exact string compares with !strcmp().
So delete the longer of the Acer blacklist entries, as its
function is just a redundant console message.
Spotted-by: Carlos Corbacho <carlos@strangeworlds.co.uk>
Signed-off-by: Len Brown <len.brown@intel.com>
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Add a default poll idle state with 0 latency. Provides an option to users
to use poll_idle by using 0 as the latency requirement.
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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Show C1 idle time in /sysfs cpuidle interface. C1 idle time may not
be entirely accurate in all cases. It includes the time spent
in the interrupt handler after wakeup with "hlt" based C1. But, it will
be accurate with "mwait" based C1.
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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Add MWAIT idle for C1 state instead of halt, on platforms that support
C1 state with MWAIT.
Renames cx->space_id to something more appropriate.
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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acpi_safe_halt() needs interrupts to be disabled for atomic
need_resched check and safe halt. Otherwise we may miss an
interrupt and go into halt.
acpi_safe_halt() also does not enable interrupts on all return paths.
So the callers should handle enable and disable interrupts around it.
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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Convert cpu_idle_wait() to cpuidle_kick_cpus() macro which is
SMP-only, and gives error on non supported CPU.
Signed-off-by: Kevin Hilman <khilman@mvista.com>
Acked-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Len Brown <len.brown@intel.com>
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More aggressively request deep C-states.
Note that the job of the OS is to minimize latency
impact to expected break events such as interrupts.
It is not the job of the OS to try to calculate if
the C-state will reach energy break-even.
The platform doesn't give the OS enough information
for it to make that calculation. Thus, it is up
to the platform to decide if it is worth it to
go as deep as the OS requested it to, or if it
should internally demote to a more shallow C-state.
But the converse is not true. The platform can not
promote into a deeper C-state than the OS requested
else it may violate latency constraints. So it is
important that the OS be aggressive in giving the
platform permission to enter deep C-states.
Signed-off-by: Len Brown <len.brown@intel.com>
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Start with default value of 6, so by default,
there is no functional change in this patch.
Signed-off-by: Len Brown <len.brown@intel.com>
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In Linux-2.6.24, CPU_IDLE went upstream, default =n.
For Linux-2.6.25, enable it by default on ACPI systems.
For Linux-2.6.26, we plan to enable it always on ACPI systems.
Signed-off-by: Len Brown <len.brown@intel.com>
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'bugzilla-7186', 'bugzilla-8269', 'bugzilla-8570', 'bugzilla-9139', 'bugzilla-9277', 'bugzilla-9341', 'bugzilla-9444', 'bugzilla-9614', 'bugzilla-9643' and 'bugzilla-9644' into release
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In function acpi_system_write_alarm in file drivers/acpi/sleep/proc.c,
big sec, min, hr, mo, day and yr are counted twice to get reasonable
values, that is very superfluous, we can do that only once.
In additon, /proc/acpi/alarm can set a related value which can be
specified as YYYY years MM months DD days HH hours MM minutes SS
senconds, it isn't a date, so you can specify as +0000-00-00 96:00:00
, that means 3 days later, current code can't handle such a case.
This patch removes unnecessary code and does with the aforementioned
situation.
Before applying this patch:
[root@localhost /]# cat /proc/acpi/alarm
2007-12-00 00:00:00
[root@localhost /]# echo "0000-00-00 96:180:180" > /proc/acpi/alarm
[root@localhost /]# cat /proc/acpi/alarm
0007-12-02 **:**:**
[root@localhost /]#
After applying this patch:
[root@localhost ~]# echo "2007-12-00 00:00:00" > /proc/acpi/alarm
[root@localhost ~]# cat /proc/acpi/alarm
2007-12-00 00:00:00
[root@localhost ~]# echo "0000-00-00 96:180:180" > /proc/acpi/alarm
[root@localhost ~]# cat /proc/acpi/alarm
0007-12-04 03:03:00
[root@localhost ~]#
Signed-off-by: Yi Yang <yi.y.yang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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/proc/acpi/alarm can't be set correctly, here is a sample:
[root@localhost /]# echo "2006 09" > /proc/acpi/alarm
[root@localhost /]# cat /proc/acpi/alarm
2007-12-09 09:09:09
[root@localhost /]# echo "2006 04" > /proc/acpi/alarm
[root@localhost /]# cat /proc/acpi/alarm
2007-12-04 04:04:04
[root@localhost /]#
Obviously, it is wrong, it should consider it as an invalid input.
after this patch:
[root@localhost /]# echo "2008 09" > /proc/acpi/alarm
-bash: echo: write error: Invalid argument
[root@localhost /]#
Signed-off-by: Yi Yang <yi.y.yang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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Vendors often ship machines with a choice of integrated or discrete
graphics, and use the same DSDT for both. As a result, the ACPI video
module will locate devices that may not exist on this specific platform.
Attempt to determine whether the device exists or not, and abort the
device creation if it doesn't.
http://bugzilla.kernel.org/show_bug.cgi?id=9614
Signed-off-by: Matthew Garrett <mjg59@srcf.ucam.org>
Acked-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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ACPI tables follow a tree structure in memory.
The root of the tree is the RSDP (Root System Description Pointer).
To find the RSDP, the OS searches for the signature "RSD PTR "
in well known physical memory locations. Then the OS computes
a table checksum to verify that the signature is really part
of a valid table header.
Some systems have a proper signature but an invalid checksum;
followed elsewhere by a proper signature with valid checksum.
http://bugzilla.kernel.org/show_bug.cgi?id=9444
The Linux RSDP scanning code bailed out on those systems
and as a result they booted with ACPI disabled.
Fix this by deleting the Linux RSDP scanning code and
plugging in the ACPICA RSDP scanning code.
Signed-off-by: Len Brown <len.brown@intel.com>
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Burst mode temporary (50 ms) locks EC to do only transactions with
driver, without it some hardware returns abstract garbage.
Reference: http://bugzilla.kernel.org/show_bug.cgi?id=9341
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
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Specification allows only byte access for EC region, so
make it separate from bug-compatible multi-byte access.
Also do not allow return of garbage in supplied *value.
Reference: http://bugzilla.kernel.org/show_bug.cgi?id=9341
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
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The sysfs backlight class provides no mechanism for querying the
acceptable brightness for a backlight. The ACPI spec states that values
are only valid if they are reported as available by the firmware. Since
we can't provide that information to userspace, instead collapse the
range to the number of actual values that can be set.
http://bugzilla.kernel.org/show_bug.cgi?id=9277
Signed-off-by: Matthew Garrett <mjg59@srcf.ucam.org>
Acked-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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module parameter is used to prevent the thermal_zone action upon
critical trip points.
But exporting this notification to userspace is still useful.
By setting nocrt with this patch applied, ACPI will take no action
but exporting the events to userspace upon critical/hot trip points.
http://bugzilla.kernel.org/show_bug.cgi?id=9139
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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ACPI Exception (acpi_processor-0677): AE_NOT_FOUND, Processor Device is not
present [20060707]
According to the ACPI spec 6.3.7,
"If a device object (including the processor object) does not have an
_STA object, then OSPM assumes that all of the above bits are set,
(in other words, the device is present, enabled, shown in the UI
and funtioning)".
is_processor_present shoud return 1 if the processor device object exists
while it doesn't have an _STA object.
http://bugzilla.kernel.org/show_bug.cgi?id=8570
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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PNP_WRITE requires protocol supports .set. If ACPI doesn't support _SRS, .set ismeanless, so PNP_WRITE.
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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For P4 model < 2, The MSR_FBC_REGISTER_ID ratio is undefined.
Revert the commit that was added to handle that case,
as it results in random MHz displayed. Something else will
have to be done to properly handle model < 2.
//commit 3e4159ab35c88aef5e063ba78796b277b762a30a
//Author: matthias.christian <matthias.christian>
//Date: Sat Feb 5 23:09:38 2005 +0000
//
// [PATCH] speedstep-lib.c: fix frequency multiplier for Pentium4 models 0&1
//
// The Pentium4 models 0&1 have a longer MSR_EBC_FREQUENCY_ID register as the
// models 2&3, so the bit shift must be bigger.
//
// Signed-off-by: Matthias-Christian Ott <matthias.christian@tiscali.de>
// Signed-off-by: Dominik Brodowski <linux@brodo.de>
// Signed-off-by: Andrew Morton <akpm@osdl.org>
// Signed-off-by: Linus Torvalds <torvalds@osdl.org>
//
// BKrev: 42055232eWM-NgjhZVir44mp5GXktQ
http://bugzilla.kernel.org/show_bug.cgi?id=7186
Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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According to http://bugzilla.kernel.org/show_bug.cgi?id=6933
The latest BIOS for the P2B-S works fine.
Remove it from the blacklist.
Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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Signed-off-by: Len Brown <len.brown@intel.com>
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Add debug tracing support during certain AML method execution.
Four more module parameters are created under /sys/module/acpi/parameters/:
trace_method_name: the AML method name that user wants to trace
trace_debug_layer: the temporary debug_layer used when tracing the method.
Using 0xffffffff by default if it is 0.
trace_debug_level: the temporary debug_level used when tracing the method.
Using 0x00ffffff by default if it is 0.
trace_state: The status of the tracing feature.
"enabled" means this feature is enabled
and the AML method is traced every time it's executed.
"1" means this feature is enabled and the AML method
will only be traced during the next execution.
"disabled" means this feature is disabled.
Users can enable/disable this debug tracing feature by
"echo string > /sys/module/acpi/parameters/trace_state".
"string" should be one of "enable", "disable" and "1".
http://bugzilla.kernel.org/show_bug.cgi?id=6629
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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GPEs are disabled depending on their type --
WAKE, WAKE_RUN, and RUNTIME. An error is returned
if we are asked to disable a GPE that has no type.
But at least one system exists that enables a GPE from AML
that is not the EC GPE, and has no _Lxx/_Exx AML handler,
and is thus never initialized.
In this case, when an external CRT is plugged in,
the GPE fires, we attempt to disable the GPE,
but instead just return an error.
So the GPE stays asserted and an ACPI interrupt storm follows.
The fix is to disable a firing GPE,
even if it comes from outer space.
http://bugzilla.kernel.org/show_bug.cgi?id=6217
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Acked-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
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Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
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References: https://bugzilla.novell.com/show_bug.cgi?id=302482
Signed-off-by: Thomas Renninger <trenn@novell.com>
Signed-off-by: Kay Sievers <kasievers@novell.com>
Signed-off-by: Frank Seidel <fseidel@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
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References: https://bugzilla.novell.com/show_bug.cgi?id=302482
Due to the new autloading of acpi drivers, the dock driver
wasn't loaded anymore as there is no HID to identify it with
(dock is needed if ACPI has a _DCK method).
This patch is a workaround for this, original by Thomas Renninger,
revised first by Kay Sievers and last by Frank Seidel.
V2 of this patch fixed problems on systems without a defined _CID for
the docking devices.
Signed-off-by: Thomas Renninger <trenn@novell.com>
Signed-off-by: Kay Sievers <kasievers@novell.com>
Signed-off-by: Frank Seidel <fseidel@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
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fix bug in safety net for TPEC fan control mode
eaa7571b2d1a08873e4bdd8e6db3431df61cd9ad
Signed-off-by: Roel Kluin <12o3l@tiscali.nl>
Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>
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The major code reorganization and cleanups, and new HKEY events, plus
poll()/select() support are good reasons to checkpoint a new version...
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>
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