From: Alexey Khoroshilov <khoroshilov@ispras.ru>
Date: Fri, 28 Feb 2014 21:20:18 +0000 (+0400)
Subject: drm/vmwgfx: avoid null pointer dereference at failure paths
X-Git-Tag: v3.14-rc5~1^2~1^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6950e23e54b1c94abf8c60c1ddfac79133d41de2;p=pandora-kernel.git

drm/vmwgfx: avoid null pointer dereference at failure paths

vmw_takedown_otable_base() and vmw_mob_unbind() check for
potential vmw_fifo_reserve() failure and print error message,
but then immediately dereference NULL pointer.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
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