From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Date: Thu, 16 Aug 2012 20:06:55 +0000 (+0200)
Subject: intel_idle: Check cpu_idle_get_driver() for NULL before dereferencing it.
X-Git-Tag: v3.2.56~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=dcd8e204d28377b29539f7e97bf91fc7ef50ab17;p=pandora-kernel.git

intel_idle: Check cpu_idle_get_driver() for NULL before dereferencing it.

commit 3735d524da64b70b41c764359da36f88aded3610 upstream.

If the machine is booted without any cpu_idle driver set
(b/c disable_cpuidle() has been called) we should follow
other users of cpu_idle API and check the return value
for NULL before using it.

Reported-and-tested-by: Mark van Dijk <mark@internecto.net>
Suggested-by: Jan Beulich <JBeulich@suse.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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