1
linux/include/acpi
Rafael J. Wysocki 07e49a7a31 ACPI: Fix lockdep false positives in acpi_power_off()
All ACPICA locks are allocated by the same function,
acpi_os_create_lock(), with the help of a local variable called
"lock".  Thus, when lockdep is enabled, it uses "lock" as the
name of all those locks and regards them as instances of the same
lock, which causes it to report possible locking problems with them
when there aren't any.

To work around this problem, define acpi_os_create_lock() as a macro
and make it pass its argument to spin_lock_init(), so that lockdep
uses it as the name of the new lock.  Define this macron in a
Linux-specific file, to minimize the resulting modifications of
the OS-independent ACPICA parts.

This change is based on an earlier patch from Andrea Righi and it
addresses a regression from 2.6.39 tracked as
https://bugzilla.kernel.org/show_bug.cgi?id=38152

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Reported-and-tested-by: Borislav Petkov <bp@alien8.de>
Tested-by: Andrea Righi <andrea@betterlinux.com>
Reviewed-by: Florian Mickler <florian@mickler.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2011-07-13 14:49:09 -04:00
..
platform ACPI: Fix lockdep false positives in acpi_power_off() 2011-07-13 14:49:09 -04:00
acexcep.h ACPICA: Update all ACPICA copyrights and signons to 2011 2011-01-18 23:48:03 -05:00
acnames.h ACPICA: Update all ACPICA copyrights and signons to 2011 2011-01-18 23:48:03 -05:00
acoutput.h ACPICA: Fix unresolved name issue for no-debug and no-error-msg cases 2011-03-02 19:38:04 -05:00
acpi_bus.h Merge branch 'linus' into release 2011-03-23 02:34:54 -04:00
acpi_drivers.h ACPI: remove dead code 2010-10-19 13:44:21 -04:00
acpi_numa.h
acpi.h ACPICA: Update all ACPICA copyrights and signons to 2011 2011-01-18 23:48:03 -05:00
acpiosxf.h ACPI: Fix lockdep false positives in acpi_power_off() 2011-07-13 14:49:09 -04:00
acpixf.h ACPICA: Update to version 20110413 2011-05-09 22:16:12 -04:00
acrestyp.h ACPICA: Update all ACPICA copyrights and signons to 2011 2011-01-18 23:48:03 -05:00
actbl1.h Merge branch 'acpica' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 2011-01-20 16:28:34 -08:00
actbl2.h ACPICA: Header support for SLIC table 2011-03-23 00:18:18 -04:00
actbl.h Fix common misspellings 2011-03-31 11:26:23 -03:00
actypes.h Merge branches 'acpica', 'aml-custom', 'bugzilla-16548', 'bugzilla-20242', 'd3-cold', 'ec-asus' and 'thermal-fix' into release 2011-05-29 04:38:48 -04:00
apei.h ACPI, APEI, Add ERST record ID cache 2011-03-21 22:59:06 -04:00
atomicio.h ACPI, IO memory pre-mapping and atomic accessing 2010-05-19 11:40:03 -04:00
button.h ACPI: make ACPI button funcs no-ops if not built in 2009-09-17 14:48:23 -07:00
container.h
hed.h ACPI Hardware Error Device (PNP0C33) support 2010-05-19 22:40:24 -04:00
pdc_intel.h ACPI: Enable bit 11 in _PDC to advertise hw coord 2009-02-07 00:41:14 -05:00
processor.h ACPI: processor: fix processor_physically_present in UP kernel 2011-05-29 02:17:56 -04:00
reboot.h Add the ability to reset the machine using the RESET_REG in ACPI's FADT table. 2008-07-16 23:27:08 +02:00
video.h ACPI: video: fix build for CONFIG_ACPI=n 2010-12-11 02:01:46 -05:00