ACPI / Wakeup: Enable button GPEs unconditionally during initialization
authorRafael J. Wysocki <rjw@sisk.pl>
Sat, 12 Feb 2011 00:39:53 +0000 (01:39 +0100)
committerRafael J. Wysocki <rjw@sisk.pl>
Sat, 12 Feb 2011 00:39:53 +0000 (01:39 +0100)
commit2a5d24286e8bdafdc272b37ec5bdd9e977b3767c
tree76f4624ab2df93bea01c174ac9c3c09a65463029
parent2d55951368faa32ff098398c56780ebb6405a3d9
ACPI / Wakeup: Enable button GPEs unconditionally during initialization

Commit 9630bdd (ACPI: Use GPE reference counting to support shared
GPEs) introduced a suspend regression where boxes resume immediately
after being suspended due to the lid or sleep button wakeup status
not being cleared properly.  This happens if the GPEs corresponding
to those devices are not enabled all the time, which apparently is
expected by some BIOSes.

To fix this problem, enable button and lid GPEs unconditionally
during initialization and keep them enabled all the time, regardless
of whether or not the ACPI button driver is used.

References: https://bugzilla.kernel.org/show_bug.cgi?id=27372
Reported-and-tested-by: Ferenc W√°gner <wferi@niif.hu>
Cc: stable@kernel.org
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
drivers/acpi/wakeup.c