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| author | Colin Ian King <colin.king@canonical.com> | 2010-08-02 17:14:43 +0200 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2010-09-28 21:40:46 +0200 |
| commit | 573b638158029898caf9470c8214b7ddd29751e3 (patch) | |
| tree | 284335b42bb0ba88a1026466080f3f62aa917afc /drivers | |
| parent | alpha: fix usp value in multithreaded coredumps (diff) | |
| download | linux-573b638158029898caf9470c8214b7ddd29751e3.tar.xz linux-573b638158029898caf9470c8214b7ddd29751e3.zip | |
ACPI: enable repeated PCIEXP wakeup by clearing PCIEXP_WAKE_STS on resume
Section 4.7.3.1.1 (PM1 Status Registers) of version 4.0 of
the ACPI spec concerning PCIEXP_WAKE_STS points out in
in the final note field in table 4-11 that if this bit is
set to 1 and the system is put into a sleeping state then
the system will not automatically wake.
This bit gets set by hardware to indicate that the system
woke up due to a PCI Express wakeup event, so clear it during
acpi_hw_clear_acpi_status() calls to enable subsequent
resumes to work.
BugLink: http://bugs.launchpad.net/bugs/613381
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/acpi/acpica/aclocal.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/aclocal.h b/drivers/acpi/acpica/aclocal.h index df85b53a674f..7dad9160f209 100644 --- a/drivers/acpi/acpica/aclocal.h +++ b/drivers/acpi/acpica/aclocal.h @@ -854,6 +854,7 @@ struct acpi_bit_register_info { ACPI_BITMASK_POWER_BUTTON_STATUS | \ ACPI_BITMASK_SLEEP_BUTTON_STATUS | \ ACPI_BITMASK_RT_CLOCK_STATUS | \ + ACPI_BITMASK_PCIEXP_WAKE_DISABLE | \ ACPI_BITMASK_WAKE_STATUS) #define ACPI_BITMASK_TIMER_ENABLE 0x0001 |