Commit Graph

59 Commits

Author SHA1 Message Date
Rafael J. Wysocki 3e384ee6c6 ACPI / PM: Fix reference counting of power resources
The reference counting of ACPI power resources is currently broken
for a few reasons.  First, instead of using a simple reference
counter per power resource it uses a list of objects representing
refereces to the given power resource from devices.  This leads to
the second breakage, because it prevents power resources from
being referenced more than once by one device, which is necessary
if the device is configured to signal wakeup.  Namely, when putting
the device into a low power state we first call
acpi_enable_wakeup_device_power() that should reference count power
resources needed for signaling wakeup and then we call
acpi_power_transition() to power off the device.  The latter call
drops references to the device's power resources, possibly including
the ones added by acpi_enable_wakeup_device_power(), so the device
can't signal wakeup as a result.  Apart from this, the locking
in acpi_power_on() and acpi_power_off_device() doesn't prevent
all possible races from happening, which may be problematic for
runtime PM and asynchronous suspend and resume.

Fix the problem by using a counter for power resources reference
counting and putting the evaluation of ACPI _ON and _OFF methods
under the power resource mutex.

Reported-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Len Brown <len.brown@intel.com>
2010-10-23 01:56:14 -04:00
Linus Torvalds 2245ba2a3a Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6:
  gcc-4.6: ACPI: fix unused but set variables in ACPI
  ACPI thermal: make procfs I/F depend on CONFIG_ACPI_PROCFS
  ACPI video: make procfs I/F depend on CONFIG_ACPI_PROCFS
  ACPI processor: remove deprecated ACPI procfs I/F
  ACPI power_resource: remove unused procfs I/F
  ACPI: remove deprecated ACPI procfs I/F
  ACPI: introduce drivers/acpi/sysfs.c
  ACPI: introduce module parameter acpi.aml_debug_output
  ACPI: introduce drivers/acpi/debugfs.c
  ACPI, APEI, ERST debug support
  ACPI, APEI, Manage GHES as platform devices
  ACPI, APEI, Rename CPER and GHES severity constants
  ACPI, APEI, Fix a typo of error path of apei_resources_request
  ACPI / ACPICA: Fix reference counting problems with GPE handlers
  ACPI: Add the check of ADR flag in course of finding ACPI handle for PCI device
  ACPI / Sleep: Drop acpi_suspend_finish()
  ACPI / Sleep: Consolidate suspend and hibernation routines
  ACPI / Wakeup: Simplify enabling of wakeup devices
  ACPI / Sleep: Rework enabling wakeup devices
  ACPI / Sleep: Free NVS copy if suspending of devices fails

Fixed up totally buggered "ACPI: fix unused but set variables in ACPI"
patch that doesn't even compile in the merge.

Thanks to Sedat Dilek <sedat.dilek@googlemail.com> for noticing the
breakage before I even pulled.  And a big "Grrr.." at Len for not even
bothering to compile the tree before asking me to pull.
2010-08-15 17:37:07 -07:00
Andi Kleen cfa806f059 gcc-4.6: ACPI: fix unused but set variables in ACPI
Some minor improvements in error handling, but overall it was mostly dead
code.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2010-08-15 00:53:08 -04:00
Zhang Rui 06af7eb043 ACPI power_resource: remove unused procfs I/F
Remove unused ACPI power procfs I/F.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2010-08-15 00:28:26 -04:00
Jiri Kosina 6c9468e9eb Merge branch 'master' into for-next 2010-04-23 02:08:44 +02:00
Justin P. Mattock 00bc42a11b Remove empty comment in acpi/power.c
Remove an empty comment.

Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2010-04-01 11:28:05 +02:00
Tejun Heo 5a0e3ad6af include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files.  percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.

percpu.h -> slab.h dependency is about to be removed.  Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability.  As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.

  http://userweb.kernel.org/~tj/misc/slabh-sweep.py

The script does the followings.

* Scan files for gfp and slab usages and update includes such that
  only the necessary includes are there.  ie. if only gfp is used,
  gfp.h, if slab is used, slab.h.

* When the script inserts a new include, it looks at the include
  blocks and try to put the new include such that its order conforms
  to its surrounding.  It's put in the include block which contains
  core kernel includes, in the same order that the rest are ordered -
  alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
  doesn't seem to be any matching order.

* If the script can't find a place to put a new include (mostly
  because the file doesn't have fitting include block), it prints out
  an error message indicating which .h file needs to be added to the
  file.

The conversion was done in the following steps.

1. The initial automatic conversion of all .c files updated slightly
   over 4000 files, deleting around 700 includes and adding ~480 gfp.h
   and ~3000 slab.h inclusions.  The script emitted errors for ~400
   files.

2. Each error was manually checked.  Some didn't need the inclusion,
   some needed manual addition while adding it to implementation .h or
   embedding .c file was more appropriate for others.  This step added
   inclusions to around 150 files.

3. The script was run again and the output was compared to the edits
   from #2 to make sure no file was left behind.

4. Several build tests were done and a couple of problems were fixed.
   e.g. lib/decompress_*.c used malloc/free() wrappers around slab
   APIs requiring slab.h to be added manually.

5. The script was run on all .h files but without automatically
   editing them as sprinkling gfp.h and slab.h inclusions around .h
   files could easily lead to inclusion dependency hell.  Most gfp.h
   inclusion directives were ignored as stuff from gfp.h was usually
   wildly available and often used in preprocessor macros.  Each
   slab.h inclusion directive was examined and added manually as
   necessary.

6. percpu.h was updated not to include slab.h.

7. Build test were done on the following configurations and failures
   were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
   distributed build env didn't work with gcov compiles) and a few
   more options had to be turned off depending on archs to make things
   build (like ipr on powerpc/64 which failed due to missing writeq).

   * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
   * powerpc and powerpc64 SMP allmodconfig
   * sparc and sparc64 SMP allmodconfig
   * ia64 SMP allmodconfig
   * s390 SMP allmodconfig
   * alpha SMP allmodconfig
   * um on x86_64 SMP allmodconfig

8. percpu.h modifications were reverted so that it could be applied as
   a separate patch and serve as bisection point.

Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.

Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-30 22:02:32 +09:00
Márton Németh c97adf9e7b acpi: make ACPI device id constant
The ids field of the struct acpi_driver is constant in <linux/acpi/acpi_bus.h>
so it is worth to make the initialization data also constant.

The semantic match that finds this kind of pattern is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@r@
disable decl_init,const_decl_init;
identifier I1, I2, x;
@@
	struct I1 {
	  ...
	  const struct I2 *x;
	  ...
	};
@s@
identifier r.I1, y;
identifier r.x, E;
@@
	struct I1 y = {
	  .x = E,
	};
@c@
identifier r.I2;
identifier s.E;
@@
	const struct I2 E[] = ... ;
@depends on !c@
identifier r.I2;
identifier s.E;
@@
+	const
	struct I2 E[] = ...;
// </smpl>

Signed-off-by: Márton Németh <nm127@freemail.hu>
Cc: Julia Lawall <julia@diku.dk>
Cc: cocci@diku.dk
Signed-off-by: Len Brown <len.brown@intel.com>
2010-01-16 15:56:43 -05:00
Len Brown 003d6a38ce Merge branch 'sfi-base' into release
Conflicts:
	drivers/acpi/power.c

Signed-off-by: Len Brown <len.brown@intel.com>
2009-09-19 00:37:13 -04:00
Rafael J. Wysocki 9b83ccd2f1 ACPI PM: Replace wakeup.prepared with reference counter
The wakeup.prepared flag is used for marking devices that have the
wake-up power already enabled, so that the wake-up power is not
enabled twice in a row for the same device.  This assumes, however,
that device wake-up power will only be enabled once, while the device
is being prepared for a system-wide sleep transition, and the second
attempt is made by acpi_enable_wakeup_device_prep().

With the upcoming PCI wake-up rework this assumption will not hold
any more for PCI bridges and the root bridge whose wake-up power
may be enabled as a result of wake-up enable propagation from other
devices (eg. add-on devices that are not associated with any GPEs).
Thus, there may be many attempts to enable wake-up power on a PCI
bridge or the root bridge during a system power state transition
and it's better to replace wakeup.prepared with a reference counter.

Reviewed-by: Matthew Garrett <mjg59@srcf.ucam.org>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-09-09 14:19:18 -07:00
Len Brown a192a9580b ACPI: Move definition of PREFIX from acpi_bus.h to internal..h
Linux/ACPI core files using internal.h all PREFIX "ACPI: ",
however, not all ACPI drivers use/want it -- and they
should not have to #undef PREFIX to define their own.

Add GPL commment to internal.h while we are there.

This does not change any actual console output,
asside from a whitespace fix.

Signed-off-by: Len Brown <len.brown@intel.com>
2009-08-28 19:57:27 -04:00
Bjorn Helgaas bdf43bbf2e ACPI: don't check power state after _ON/_OFF
We used to evaluate _STA to check the power state of a device after
running _ON or _OFF.  But as far as I can tell, there's no benefit
to evaluating _STA, and sometimes we trip over bugs when BIOSes don't
implement _STA correctly.

Yakui says Windows XP doesn't evaluate _STA during power transition.
So let's skip it in Linux, too.  It's conceivable that we'll need to
check _STA in the future for some reason, but until we do, I don't
see a reason to clutter this code path.

References:
    http://bugzilla.kernel.org/show_bug.cgi?id=13243
    http://marc.info/?l=linux-acpi&m=124166053803753&w=2
    http://marc.info/?l=linux-acpi&m=124175761408256&w=2
    http://marc.info/?l=linux-acpi&m=124210593114061&w=2

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Acked-by: Matthew Garrett <mjg59@srcf.ucam.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-05-27 21:45:53 -04:00
Len Brown edd84690d1 Merge branch 'acpi-modparam' into release
Conflicts:
	drivers/acpi/Makefile

Signed-off-by: Len Brown <len.brown@intel.com>
2009-04-05 01:45:50 -04:00
Rusty Russell 5b5d911740 ACPI: simplify module_param namespace
Impact: cleanup

Rather than overriding MODULE_PARAM_PREFIX, build via acpi.o so
KBUILD_MODNAME is set to "acpi".

This is the logical way to do it, even though acpi cannot be a module
due to these config options being bool.  Those parts of ACPI which can
be modular are not built into the acpi "module".

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-04-02 16:38:11 -04:00
Bjorn Helgaas 44515374cb ACPI: call acpi_power_init() explicitly rather than as initcall
This patch makes acpi_init() call acpi_power_init() directly.
Previously, both were subsys_initcalls.  acpi_power_init()
must happen after acpi_init(), and it's better to call it
explicitly rather than rely on link ordering.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
CC: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-27 12:50:11 -04:00
Lin Ming 60a4ce7f41 ACPI: power.c: call acpi_get_name to get node name
acpi_ut_get_node_name is an internal acpica function.
use acpi_get_name to get node ascii name

Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-12-31 01:11:51 -05:00
Len Brown f613984902 Merge branch 'power' into release 2008-11-11 21:14:15 -05:00
Bjorn Helgaas 89595b8f28 ACPI: consolidate ACPI_*_COMPONENT definitions in acpi_drivers.h
Move all the component definitions for drivers to a single shared place,
include/acpi/acpi_drivers.h.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-11-07 21:44:37 -05:00
Zhao Yakui 676962dac6 ACPI: fan: Delete the strict check in power transition
On some laptops the Fan device is turned on/off by controlling the
corresponding power resource. For example: If the power resource
defined in _PR0 object is turned off, it indicates that the FAN device
is in off state(the ACPI state is in D3 state).

Maybe the device is already in D3 state and expected to be transited to
D3 state. As there is no _PR3 object, the power transition can't be
finished and it will be switched to the Unknown state.

Maybe it is more reasonable that the strick check in power transistion
is deleted.

http://bugzilla.kernel.org/show_bug.cgi?id=9485

Signed-off-by: yakui.zhao@intel.com
Signed-off-by: Len Brown <len.brown@intel.com>
2008-10-28 01:39:59 -04:00
Zhao Yakui b1b57fbe9b ACPI: fix de-reference bug in power resource driver
change state to *state in the function of acpi_power_get_state()

Signed-off-by: yakui.zhao@intel.com
Signed-off-by: Len Brown <len.brown@intel.com>
2008-10-28 01:38:59 -04:00
Len Brown 7674416db4 Merge branch 'ull' into test
Conflicts:
	drivers/acpi/bay.c
	drivers/acpi/dock.c
	drivers/ata/libata-acpi.c

Signed-off-by: Len Brown <len.brown@intel.com>
2008-10-22 23:33:29 -04:00
Len Brown 5f50ef453d Merge branch 'misc' into test 2008-10-22 23:28:38 -04:00
Zhao Yakui f5adfaa372 ACPI: Add "acpi.power_nocheck=1" to disable power state check in power transition
Maybe the incorrect power state is returned on the bogus bios, which
is different with the real power state. For example: the bios returns D0
state and the real power state is D3. OS expects to set the device to D0
state. In  such case if OS uses the power state returned by the BIOS and
checks the device power state very strictly in power transition, the device
can't be transited to the correct power state.

   So the boot option of "acpi.power_nocheck=1" is added to avoid checking
the device power in the course of device power transition.

http://bugzilla.kernel.org/show_bug.cgi?id=8049
http://bugzilla.kernel.org/show_bug.cgi?id=11000

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Li Shaohua <shaohua.li@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-10-22 17:59:57 -04:00
Zhao Yakui a51e145f37 ACPI: Get the device power state in the course of scanning device
Get the device power state in the course of scanning device if the device
power flag is power_managable. i.e. The device has the _PSx/_PRx object.

At the same time before the drivers/acpi/power module is loaded, there is no
relation between acpi_power_resource and acpi device. So the first parameter
of acpi_power_get_state is changed to acpi_handle.

http://bugzilla.kernel.org/show_bug.cgi?id=8049
http://bugzilla.kernel.org/show_bug.cgi?id=11000

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Li Shaohua <shaohua.li@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-10-22 17:58:00 -04:00
Matthew Wilcox 27663c5855 ACPI: Change acpi_evaluate_integer to support 64-bit on 32-bit kernels
As of version 2.0, ACPI can return 64-bit integers.  The current
acpi_evaluate_integer only supports 64-bit integers on 64-bit platforms.
Change the argument to take a pointer to an acpi_integer so we support
64-bit integers on all platforms.

lenb: replaced use of "acpi_integer" with "unsigned long long"
lenb: fixed bug in acpi_thermal_trips_update()

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-10-11 02:47:33 -04:00
Pavel Machek db89b4f0db ACPI: catch calls of acpi_driver_data on pointer of wrong type
Catch attempts to use of acpi_driver_data on pointers of wrong type.

akpm: rewritten to use proper C typechecking and remove the
"function"-used-as-lvalue thing.

Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-10-10 18:05:53 -04:00
Rafael J. Wysocki 0af4b8c4fb ACPI: Introduce new device wakeup flag 'prepared'
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>
2008-07-07 16:26:14 -07:00
Rafael J. Wysocki 77e766099e ACPI: Introduce acpi_device_sleep_wake function
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>
2008-07-07 16:25:57 -07:00
Linus Torvalds 08acd4f8af Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (179 commits)
  ACPI: Fix acpi_processor_idle and idle= boot parameters interaction
  acpi: fix section mismatch warning in pnpacpi
  intel_menlo: fix build warning
  ACPI: Cleanup: Remove unneeded, multiple local dummy variables
  ACPI: video - fix permissions on some proc entries
  ACPI: video - properly handle errors when registering proc elements
  ACPI: video - do not store invalid entries in attached_array list
  ACPI: re-name acpi_pm_ops to acpi_suspend_ops
  ACER_WMI/ASUS_LAPTOP: fix build bug
  thinkpad_acpi: fix possible NULL pointer dereference if kstrdup failed
  ACPI: check a return value correctly in acpi_power_get_context()
  #if 0 acpi/bay.c:eject_removable_drive()
  eeepc-laptop: add hwmon fan control
  eeepc-laptop: add backlight
  eeepc-laptop: add base driver
  ACPI: thinkpad-acpi: bump up version to 0.20
  ACPI: thinkpad-acpi: fix selects in Kconfig
  ACPI: thinkpad-acpi: use a private workqueue
  ACPI: thinkpad-acpi: fluff really minor fix
  ACPI: thinkpad-acpi: use uppercase for "LED" on user documentation
  ...

Fixed conflicts in drivers/acpi/video.c and drivers/misc/intel_menlow.c
manually.
2008-04-30 11:52:52 -07:00
Denis V. Lunev cf7acfab03 acpi: use non-racy method for proc entries creation
Use proc_create()/proc_create_data() to make sure that ->proc_fops and ->data
be setup before gluing PDE to main tree.

Add correct ->owner to proc_fops to fix reading/module unloading race.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Cc: Len Brown <lenb@kernel.org>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-29 08:06:22 -07:00
Li Zefan a815ab8b58 ACPI: check a return value correctly in acpi_power_get_context()
We should check *resource != NULL rather than resource != NULL, which will be
always true.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Acked-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-29 10:10:03 -04:00
Miguel Botón e76d5f7e83 ACPI: remove duplicated warning message
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>
2008-02-07 00:49:28 -05:00
Alexey Starikovskiy c35923bc55 ACPI: power: don't cache power resource state
ACPI may change power resource state behind our back, so don't
keep our local copy, which may not be valid.

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-10-25 16:31:31 -04:00
Thomas Renninger 1ba90e3a87 ACPI: autoload modules - Create __mod_acpi_device_table symbol for all ACPI drivers
modpost is going to use these to create e.g. acpi:ACPI0001
in modules.alias.

Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-07-23 13:56:42 -04:00
Len Brown 63e34ca93a Pull misc-for-upstream into release branch 2007-03-09 23:19:50 -05:00
Konstantin Karasyov ff24ba74b6 ACPI: ThinkPad Z60m: usb mouse stops working after suspend to RAM
(http://www.mail-archive.com/linux-acpi@vger.kernel.org/msg05270.html):

References : http://lkml.org/lkml/2007/2/21/413
             http://lkml.org/lkml/2007/2/28/172
Submitter  : Arkadiusz Miskiewicz <arekm@maven.pl>
Caused-By  : Konstantin Karasyov <konstantin.a.karasyov@intel.com>
             commit 0a6139027f

Do not disable power resources on resume even if there are no devices referencing it.

Signed-off-by: Konstantin Karasyov <konstantin.a.karasyov@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-03-07 03:50:11 -05:00
Konstantin Karasyov 7292576043 ACPI: fix S3 fan resume issue
http://bugzilla.kernel.org/show_bug.cgi?id=7570#c14

Signed-off-by: Konstantin Karasyov <konstantin.a.karasyov@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-02-21 02:05:58 -05:00
Len Brown 08e4a10ec8 Pull bugzilla-7570 into release branch 2007-02-16 22:11:50 -05:00
Len Brown 1004879f25 Pull bugzilla-7122 into release branch 2007-02-16 22:11:31 -05:00
Konstantin Karasyov b1028c545c ACPI: fix fan after resume from S3
http://bugzilla.kernel.org/show_bug.cgi?id=7570

Signed-off-by: Konstantin Karasyov <konstantin.a.karasyov@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-02-16 02:23:07 -05:00
Len Brown e8363f3327 ACPI: update acpi_power_resume() per new acpi_op_resume
drivers/acpi/power.c:69: warning: initialization from incompatible pointer type

Signed-off-by: Len Brown <len.brown@intel.com>
2007-02-16 02:05:39 -05:00
Konstantin Karasyov 0a6139027f ACPI: Thermal issues on HP nx6325
The previous reference counting scheme to enable power resources
got confused when multiple devices were present that might
repeatedly enable or disable the resource and throw off the count.

The new code simply lists the referencing devices which
are requesting the resource to be enabled.  When there are none,
then it is off.

Signed-off-by: Konstantin Karasyov <konstantin.a.karasyov@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-02-16 01:47:06 -05:00
Len Brown 7cda93e008 ACPI: delete extra #defines in /drivers/acpi/ drivers
Cosmetic only.

Except in a single case, #define ACPI_*_DRIVER_NAME
were invoked 0 or 1 times.

Signed-off-by: Len Brown <len.brown@intel.com>
2007-02-12 23:50:52 -05:00
Len Brown c2b6705b75 ACPI: fix acpi_driver.name usage
It was erroneously used as a description rather than a name.

ie. turn this:

lenb@se7525gp2:/sys> ls bus/acpi/drivers
ACPI AC Adapter Driver  ACPI Embedded Controller Driver  ACPI Power Resource Driver
ACPI Battery Driver     ACPI Fan Driver                  ACPI Processor Driver
ACPI Button Driver      ACPI PCI Interrupt Link Driver   ACPI Thermal Zone Driver
ACPI container driver   ACPI PCI Root Bridge Driver      hpet

into this:

lenb@se7525gp2:~> ls /sys/bus/acpi/drivers
ac  battery  button  container  ec  fan  hpet  pci_link  pci_root  power  processor  thermal

Signed-off-by: Len Brown <len.brown@intel.com>
2007-02-12 23:33:40 -05:00
Len Brown f52fd66d2e ACPI: clean up ACPI_MODULE_NAME() use
cosmetic only

Make "module name" actually match the file name.
Invoke with ';' as leaving it off confuses Lindent and gcc doesn't care.
Fix indentation where Lindent did get confused.

Signed-off-by: Len Brown <len.brown@intel.com>
2007-02-12 22:42:12 -05:00
Burman Yan 36bcbec7ce ACPI: replace kmalloc+memset with kzalloc
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2006-12-20 16:54:54 -05:00
Len Brown cece901481 Pull style into test branch
Conflicts:

	drivers/acpi/button.c
	drivers/acpi/ec.c
	drivers/acpi/osl.c
	drivers/acpi/sbs.c
2006-12-16 01:04:27 -05:00
Dmitry Torokhov 786f18c666 ACPI: fix potential OOPS in power driver with CONFIG_ACPI_DEBUG
device was set to null and used before set in a debug printk

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Len Brown <len.brown@intel.com>
2006-10-14 01:54:21 -04:00
Jan Engelhardt 50dd096973 ACPI: Remove unnecessary from/to-void* and to-void casts in drivers/acpi
Signed-off-by: Jan Engelhardt <jengelh@gmx.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2006-10-14 01:51:07 -04:00
Arjan van de Ven d75080328a ACPI: add 'const' to several ACPI file_operations
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2006-07-10 00:04:29 -04:00