diff options
| author | Colin Ian King <colin.king@canonical.com> | 2010-08-02 15:14:43 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-10-28 21:44:14 -0700 |
| commit | 2c41bbda398de6fff0e1a97b9d4146e5049d77a1 (patch) | |
| tree | a6df5af539fcfaa3151a05ca809422018b262d29 /kernel/sched.c | |
| parent | c1faa695d62e888529be9a0ef02bf22093400d74 (diff) | |
ACPI: enable repeated PCIEXP wakeup by clearing PCIEXP_WAKE_STS on resume
commit 573b638158029898caf9470c8214b7ddd29751e3 upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'kernel/sched.c')
0 files changed, 0 insertions, 0 deletions