From: Mingkai Hu <Mingkai.hu@freescale.com>
Date: Mon, 16 Apr 2012 02:05:06 +0000 (+0800)
Subject: powerpc/mpic_msgr: add lock for MPIC message global variable
X-Git-Tag: v3.4-rc5~43^2~5^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e0a5a6c38190a5016bcb0f1267324a19b846a35a;p=pandora-kernel.git

powerpc/mpic_msgr: add lock for MPIC message global variable

Also fix issue of accessing invalid msgr pointer issue. The local
msgr pointer in fucntion mpic_msgr_get will be accessed before
getting a valid address which will cause kernel crash.

Signed-off-by: Mingkai Hu <Mingkai.hu@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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