From: Dave Airlie <airlied@gmail.com>
Date: Fri, 6 Jul 2012 17:06:42 +0000 (+0100)
Subject: drm: fail gracefully when proc isn't setup.
X-Git-Tag: v3.6-rc1~83^2~38
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=49099c4991da3c94773f888aea2e9d27b8a7c6d1;p=pandora-kernel.git

drm: fail gracefully when proc isn't setup.

If drm can't find proc it should fail more gracefully, than just
oopsing, this tests drm_class is NULL, and sets it to NULL in the
fail paths.

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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