From: Rafael J. Wysocki <rjw@sisk.pl>
Date: Sat, 12 Feb 2011 00:39:15 +0000 (+0100)
Subject: ACPI / ACPICA: Avoid crashing if _PRW is defined for the root object
X-Git-Tag: v2.6.38-rc5~5^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2d55951368faa32ff098398c56780ebb6405a3d9;p=pandora-kernel.git

ACPI / ACPICA: Avoid crashing if _PRW is defined for the root object

Some ACPI BIOSes define _PRW for the root object which causes
acpi_setup_gpe_for_wake() to crash when trying to dereference the
bogus device_node pointer.  Avoid the crash by checking if
wake_device is not the root object before attempting to set up the
"implicit notify" mechanism for it.

The problem was introduced by commit bba63a296ffab20e08d9e8252d2f0d99
(ACPICA: Implicit notify support) that added the wake_device argument
to acpi_setup_gpe_for_wake().

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
---

Reading git-diff-tree failed