From: Jon Medhurst (Tixy) <tixy@linaro.org>
Date: Wed, 15 Aug 2012 20:11:00 +0000 (+0200)
Subject: cpuidle: Prevent null pointer dereference in cpuidle_coupled_cpu_notify
X-Git-Tag: v3.6-rc3~33^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5fbbb90dfdedb9a258550e4e5debd3013266372e;p=pandora-kernel.git

cpuidle: Prevent null pointer dereference in cpuidle_coupled_cpu_notify

When a kernel is built to support multiple hardware types it's possible
that CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED is set but the hardware the
kernel is run on doesn't support cpuidle and therefore doesn't load a
driver for it. In this case, when the system is shut down,
cpuidle_coupled_cpu_notify() gets called with cpuidle_devices set to
NULL. There are quite possibly other circumstances where this
situation can also occur and we should check for it.

Signed-off-by: Jon Medhurst <tixy@linaro.org>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
---

Reading git-diff-tree failed