From: Devendra Naga <devendra.aaru@gmail.com>
Date: Sat, 7 Jul 2012 09:22:15 +0000 (+0000)
Subject: drm/mgag200: fix null pointer dereference
X-Git-Tag: v3.6-rc1~83^2~28
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4dbdf0aea9585add9359e7ca5535256f866ec85c;p=pandora-kernel.git

drm/mgag200: fix null pointer dereference

we are referencing the pointer after doing alloc_apertures,
as alloc_apertures kzallocs, the kzalloc may fail and we get a NULL.

so we need to check for NULL before we dereference this pointer

Signed-off-by: Devendra Naga <devendra.aaru@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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