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28f4f8a9de
linux-next/drivers/acpi/acpica
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Rafael J. Wysocki 28f4f8a9de ACPI / ACPICA: Fix reference counting problems with GPE handlers 
If a handler is installed for a GPE associated with an AML method and
such that it cannot wake up the system from sleep states, the GPE
remains enabled after the handler has been installed, although it
should be disabled in that case to avoid spurious execution of the
handler.

Fix this issue by making acpi_install_gpe_handler() disable GPEs
that were previously associated with AML methods and cannot wake up
the system from sleep states.

Analogously, make acpi_remove_gpe_handler() enable the GPEs that
are associated with AML methods after their handlers have been
removed and cannot wake up the system from sleep states.  In addition
to that, fix a code ordering issue in acpi_remove_gpe_handler() that
renders the locking ineffective (ACPI_MTX_EVENTS is released
temporarily in the middle of the routine to wait for the completion
of events already in progress).

For this purpose introduce acpi_raw_disable_gpe() and
acpi_raw_enable_gpe() to be called with acpi_gbl_gpe_lock held
and rework acpi_disable_gpe() and acpi_enable_gpe(), respectively, to
use them.  Also rework acpi_gpe_can_wake() to use
acpi_raw_disable_gpe() instead of calling acpi_disable_gpe() after
releasing the lock to avoid the possible theoretical race with
acpi_install_gpe_handler().

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: "Moore, Robert" <robert.moore@intel.com>
Cc: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2010-08-07 10:30:12 -04:00
..
accommon.h ACPICA: Update all ACPICA copyrights and signons to 2010 2010-01-22 12:30:05 -05:00
acconfig.h ACPICA: Limit maximum time for Sleep() operator 2010-06-12 00:55:17 -04:00
acdebug.h ACPICA: Update all ACPICA copyrights and signons to 2010 2010-01-22 12:30:05 -05:00
acdispat.h ACPICA: Update all ACPICA copyrights and signons to 2010 2010-01-22 12:30:05 -05:00
acevents.h ACPI / ACPICA: Fix reference counting problems with GPE handlers 2010-08-07 10:30:12 -04:00
acglobal.h ACPI / ACPICA: Do not execute _PRW methods during initialization 2010-07-12 14:17:39 -04:00
achware.h ACPICA: Remove obsolete GPE function 2010-07-06 22:34:27 -04:00
acinterp.h ACPICA: Rename acpi_ex_system_do_suspend->acpi_ex_system_do_sleep 2010-05-06 03:05:54 -04:00
aclocal.h ACPI / ACPICA: Fix reference counting problems with GPE handlers 2010-08-07 10:30:12 -04:00
acmacros.h ACPICA: Remove obsolete ACPI_INTEGER (acpi_integer) type 2010-01-22 12:30:06 -05:00
acnamesp.h ACPICA: Performance enhancement for namespace search and access 2010-07-06 22:33:56 -04:00
acobject.h ACPICA: Update flags for operand object 2010-07-06 22:33:56 -04:00
acopcode.h ACPICA: Update all ACPICA copyrights and signons to 2010 2010-01-22 12:30:05 -05:00
acparser.h ACPICA: Update all ACPICA copyrights and signons to 2010 2010-01-22 12:30:05 -05:00
acpredef.h ACPICA: iASL/Core: Add support for _WDG/_WED MS methods 2010-07-06 22:33:55 -04:00
acresrc.h ACPICA: Update all ACPICA copyrights and signons to 2010 2010-01-22 12:30:05 -05:00
acstruct.h ACPICA: Expand device initialization counters to 32 bits 2010-07-06 22:33:56 -04:00
actables.h ACPICA: Update DSDT copy/detection. 2010-04-20 10:43:16 -04:00
acutils.h ACPICA: Remove obsolete ACPI_INTEGER (acpi_integer) type 2010-01-22 12:30:06 -05:00
amlcode.h ACPICA: Update all ACPICA copyrights and signons to 2010 2010-01-22 12:30:05 -05:00
amlresrc.h ACPICA: Update all ACPICA copyrights and signons to 2010 2010-01-22 12:30:05 -05:00
dsfield.c ACPICA: Standardize integer output for ACPICA warnings/errors 2010-04-20 10:42:52 -04:00
dsinit.c ACPICA: Expand initialization counters to 32 bits 2010-07-06 22:33:55 -04:00
dsmethod.c ACPICA: Optimization: Reduce the number of namespace walks 2010-07-06 22:33:57 -04:00
dsmthdat.c ACPICA: Performance enhancement for namespace search and access 2010-07-06 22:33:56 -04:00
dsobject.c ACPICA: Fix for Alias references within Package objects 2010-07-06 22:34:27 -04:00
dsopcode.c ACPICA: Performance enhancement for namespace search and access 2010-07-06 22:33:56 -04:00
dsutils.c ACPICA: Core: Replace all %d format specifiers with %u (unsigned) 2010-07-06 22:33:55 -04:00
dswexec.c ACPICA: Standardize integer output for ACPICA warnings/errors 2010-04-20 10:42:52 -04:00
dswload.c ACPICA: Update all ACPICA copyrights and signons to 2010 2010-01-22 12:30:05 -05:00
dswscope.c ACPICA: Update all ACPICA copyrights and signons to 2010 2010-01-22 12:30:05 -05:00
dswstate.c ACPICA: Standardize integer output for ACPICA warnings/errors 2010-04-20 10:42:52 -04:00
evevent.c ACPI / ACPICA: Do not execute _PRW methods during initialization 2010-07-12 14:17:39 -04:00
evgpe.c ACPI / ACPICA: Fix reference counting problems with GPE handlers 2010-08-07 10:30:12 -04:00
evgpeblk.c ACPI / ACPICA: Simplify acpi_ev_initialize_gpe_block() 2010-07-12 14:33:35 -04:00
evgpeinit.c ACPI / ACPICA: Do not execute _PRW methods during initialization 2010-07-12 14:17:39 -04:00
evgpeutil.c ACPICA: Split large file, evgpeblk 2010-05-06 03:05:54 -04:00
evmisc.c ACPICA: Standardize integer output for ACPICA warnings/errors 2010-04-20 10:42:52 -04:00
evregion.c ACPICA: Remove obsolete ACPI_INTEGER (acpi_integer) type 2010-01-22 12:30:06 -05:00
evrgnini.c ACPICA: Performance enhancement for namespace search and access 2010-07-06 22:33:56 -04:00
evsci.c ACPICA: Update all ACPICA copyrights and signons to 2010 2010-01-22 12:30:05 -05:00
evxface.c ACPI / ACPICA: Fix reference counting problems with GPE handlers 2010-08-07 10:30:12 -04:00
evxfevnt.c ACPI / ACPICA: Fix reference counting problems with GPE handlers 2010-08-07 10:30:12 -04:00
evxfregn.c ACPICA: Update all ACPICA copyrights and signons to 2010 2010-01-22 12:30:05 -05:00
exconfig.c ACPI / ACPICA: Do not execute _PRW methods during initialization 2010-07-12 14:17:39 -04:00
exconvrt.c ACPICA: Standardize integer output for ACPICA warnings/errors 2010-04-20 10:42:52 -04:00
excreate.c ACPICA: Standardize integer output for ACPICA warnings/errors 2010-04-20 10:42:52 -04:00
exdebug.c ACPICA: Enhance configuration for output of AML Debug Object 2010-04-20 10:42:49 -04:00
exdump.c ACPICA: Performance enhancement for namespace search and access 2010-07-06 22:33:56 -04:00
exfield.c ACPICA: Standardize integer output for ACPICA warnings/errors 2010-04-20 10:42:52 -04:00
exfldio.c ACPICA: Core: Replace all %d format specifiers with %u (unsigned) 2010-07-06 22:33:55 -04:00
exmisc.c ACPICA: Standardize integer output for ACPICA warnings/errors 2010-04-20 10:42:52 -04:00
exmutex.c ACPICA: Update comments/headers, no functional change 2010-04-20 10:43:15 -04:00
exnames.c ACPICA: Standardize integer output for ACPICA warnings/errors 2010-04-20 10:42:52 -04:00
exoparg1.c ACPICA: Rename acpi_ex_system_do_suspend->acpi_ex_system_do_sleep 2010-05-06 03:05:54 -04:00
exoparg2.c ACPICA: Minimize the differences between linux GPE code and ACPICA code base 2010-04-20 10:43:16 -04:00
exoparg3.c ACPICA: Standardize integer output for ACPICA warnings/errors 2010-04-20 10:42:52 -04:00
exoparg6.c ACPICA: Standardize integer output for ACPICA warnings/errors 2010-04-20 10:42:52 -04:00
exprep.c ACPICA: Update flags for operand object 2010-07-06 22:33:56 -04:00
exregion.c ACPICA: Core: Replace all %d format specifiers with %u (unsigned) 2010-07-06 22:33:55 -04:00
exresnte.c ACPICA: Standardize integer output for ACPICA warnings/errors 2010-04-20 10:42:52 -04:00
exresolv.c ACPICA: Standardize integer output for ACPICA warnings/errors 2010-04-20 10:42:52 -04:00
exresop.c ACPICA: Standardize integer output for ACPICA warnings/errors 2010-04-20 10:42:52 -04:00
exstore.c ACPICA: Standardize integer output for ACPICA warnings/errors 2010-04-20 10:42:52 -04:00
exstoren.c ACPICA: Update all ACPICA copyrights and signons to 2010 2010-01-22 12:30:05 -05:00
exstorob.c ACPICA: Update all ACPICA copyrights and signons to 2010 2010-01-22 12:30:05 -05:00
exsystem.c ACPICA: Limit maximum time for Sleep() operator 2010-06-12 00:55:17 -04:00
exutils.c ACPICA: Remove obsolete ACPI_INTEGER (acpi_integer) type 2010-01-22 12:30:06 -05:00
hwacpi.c ACPICA: simplify SCI_EN workaround 2010-05-12 00:37:59 -04:00
hwgpe.c ACPICA: Remove obsolete GPE function 2010-07-06 22:34:27 -04:00
hwregs.c ACPICA: Standardize integer output for ACPICA warnings/errors 2010-04-20 10:42:52 -04:00
hwsleep.c ACPICA: Core: Replace all %d format specifiers with %u (unsigned) 2010-07-06 22:33:55 -04:00
hwtimer.c ACPICA: Remove obsolete ACPI_INTEGER (acpi_integer) type 2010-01-22 12:30:06 -05:00
hwvalid.c ACPICA: Truncate I/O addresses to 16 bits for Windows compatibility 2010-06-12 00:55:50 -04:00
hwxface.c ACPICA: Update all ACPICA copyrights and signons to 2010 2010-01-22 12:30:05 -05:00
Makefile ACPICA: Split large file, evgpeblk 2010-05-06 03:05:54 -04:00
nsaccess.c ACPICA: Performance enhancement for namespace search and access 2010-07-06 22:33:56 -04:00
nsalloc.c ACPICA: Optimization: Reduce the number of namespace walks 2010-07-06 22:33:57 -04:00
nsdump.c ACPICA: Core: Replace all %d format specifiers with %u (unsigned) 2010-07-06 22:33:55 -04:00
nsdumpdv.c ACPICA: Update all ACPICA copyrights and signons to 2010 2010-01-22 12:30:05 -05:00
nseval.c ACPICA: Update all ACPICA copyrights and signons to 2010 2010-01-22 12:30:05 -05:00
nsinit.c ACPICA: Performance enhancement for namespace search and access 2010-07-06 22:33:56 -04:00
nsload.c ACPICA: Update all ACPICA copyrights and signons to 2010 2010-01-22 12:30:05 -05:00
nsnames.c ACPICA: Performance enhancement for namespace search and access 2010-07-06 22:33:56 -04:00
nsobject.c ACPICA: Update all ACPICA copyrights and signons to 2010 2010-01-22 12:30:05 -05:00
nsparse.c ACPICA: Core: Replace all %d format specifiers with %u (unsigned) 2010-07-06 22:33:55 -04:00
nspredef.c ACPICA: Predefined name repair: fix NULL package elements 2010-01-22 12:30:06 -05:00
nsrepair2.c ACPICA: Add comment: _BCL cannot be sorted on the fly 2010-07-06 22:33:54 -04:00
nsrepair.c ACPICA: Fix lint warning for 64-bit constant 2010-07-06 22:34:27 -04:00
nssearch.c ACPICA: Performance enhancement for namespace search and access 2010-07-06 22:33:56 -04:00
nsutils.c ACPICA: Performance enhancement for namespace search and access 2010-07-06 22:33:56 -04:00
nswalk.c ACPICA: Performance enhancement for namespace search and access 2010-07-06 22:33:56 -04:00
nsxfeval.c ACPICA: AcpiGetDevices: Eliminate unnecessary _STA calls 2010-01-22 12:30:05 -05:00
nsxfname.c ACPICA: Update all ACPICA copyrights and signons to 2010 2010-01-22 12:30:05 -05:00
nsxfobj.c ACPICA: Performance enhancement for namespace search and access 2010-07-06 22:33:56 -04:00
psargs.c ACPICA: Standardize integer output for ACPICA warnings/errors 2010-04-20 10:42:52 -04:00
psloop.c ACPICA: Standardize integer output for ACPICA warnings/errors 2010-04-20 10:42:52 -04:00
psopcode.c ACPICA: Update all ACPICA copyrights and signons to 2010 2010-01-22 12:30:05 -05:00
psparse.c ACPICA: Update all ACPICA copyrights and signons to 2010 2010-01-22 12:30:05 -05:00
psscope.c ACPICA: Update all ACPICA copyrights and signons to 2010 2010-01-22 12:30:05 -05:00
pstree.c ACPICA: Update all ACPICA copyrights and signons to 2010 2010-01-22 12:30:05 -05:00
psutils.c ACPICA: Update all ACPICA copyrights and signons to 2010 2010-01-22 12:30:05 -05:00
pswalk.c ACPICA: Update all ACPICA copyrights and signons to 2010 2010-01-22 12:30:05 -05:00
psxface.c ACPICA: Add subsystem option to force copy of DSDT to local memory 2010-04-20 10:43:16 -04:00
rsaddr.c ACPICA: Update all ACPICA copyrights and signons to 2010 2010-01-22 12:30:05 -05:00
rscalc.c ACPICA: Update all ACPICA copyrights and signons to 2010 2010-01-22 12:30:05 -05:00
rscreate.c ACPICA: Standardize integer output for ACPICA warnings/errors 2010-04-20 10:42:52 -04:00
rsdump.c ACPICA: Update all ACPICA copyrights and signons to 2010 2010-01-22 12:30:05 -05:00
rsinfo.c ACPICA: Update all ACPICA copyrights and signons to 2010 2010-01-22 12:30:05 -05:00
rsio.c ACPICA: Update all ACPICA copyrights and signons to 2010 2010-01-22 12:30:05 -05:00
rsirq.c ACPICA: Update all ACPICA copyrights and signons to 2010 2010-01-22 12:30:05 -05:00
rslist.c ACPICA: Standardize integer output for ACPICA warnings/errors 2010-04-20 10:42:52 -04:00
rsmemory.c ACPICA: Update all ACPICA copyrights and signons to 2010 2010-01-22 12:30:05 -05:00
rsmisc.c ACPICA: Standardize integer output for ACPICA warnings/errors 2010-04-20 10:42:52 -04:00
rsutils.c ACPICA: Update all ACPICA copyrights and signons to 2010 2010-01-22 12:30:05 -05:00
rsxface.c ACPICA: Update all ACPICA copyrights and signons to 2010 2010-01-22 12:30:05 -05:00
tbfadt.c ACPICA: Standardize integer output for ACPICA warnings/errors 2010-04-20 10:42:52 -04:00
tbfind.c ACPICA: Clarify/rename some root table descriptor fields 2010-05-06 03:05:54 -04:00
tbinstal.c ACPICA: Clarify/rename some root table descriptor fields 2010-05-06 03:05:54 -04:00
tbutils.c ACPICA: Clarify/rename some root table descriptor fields 2010-05-06 03:05:54 -04:00
tbxface.c ACPICA: Clarify/rename some root table descriptor fields 2010-05-06 03:05:54 -04:00
tbxfroot.c ACPICA: Standardize integer output for ACPICA warnings/errors 2010-04-20 10:42:52 -04:00
utalloc.c ACPICA: Standardize integer output for ACPICA warnings/errors 2010-04-20 10:42:52 -04:00
utcopy.c ACPICA: Prevent possible allocation overrun during object copy 2010-05-06 03:05:54 -04:00
utdebug.c ACPICA: Remove obsolete ACPI_INTEGER (acpi_integer) type 2010-01-22 12:30:06 -05:00
utdelete.c ACPICA: Standardize integer output for ACPICA warnings/errors 2010-04-20 10:42:52 -04:00
uteval.c ACPICA: Standardize integer output for ACPICA warnings/errors 2010-04-20 10:42:52 -04:00
utglobal.c ACPICA: Performance enhancement for namespace search and access 2010-07-06 22:33:56 -04:00
utids.c ACPICA: Update all ACPICA copyrights and signons to 2010 2010-01-22 12:30:05 -05:00
utinit.c ACPICA: Update all ACPICA copyrights and signons to 2010 2010-01-22 12:30:05 -05:00
utlock.c ACPICA: Update all ACPICA copyrights and signons to 2010 2010-01-22 12:30:05 -05:00
utmath.c ACPICA: Remove obsolete ACPI_INTEGER (acpi_integer) type 2010-01-22 12:30:06 -05:00
utmisc.c ACPICA: Standardize integer output for ACPICA warnings/errors 2010-04-20 10:42:52 -04:00
utmutex.c ACPICA: Standardize integer output for ACPICA warnings/errors 2010-04-20 10:42:52 -04:00
utobject.c ACPICA: Standardize integer output for ACPICA warnings/errors 2010-04-20 10:42:52 -04:00
utresrc.c ACPICA: Update all ACPICA copyrights and signons to 2010 2010-01-22 12:30:05 -05:00
utstate.c ACPICA: Update all ACPICA copyrights and signons to 2010 2010-01-22 12:30:05 -05:00
utxface.c ACPI / ACPICA: Do not execute _PRW methods during initialization 2010-07-12 14:17:39 -04:00