From: Emil Velikov <emil.l.velikov@gmail.com>
Date: Sun, 21 Aug 2011 21:48:12 +0000 (+0100)
Subject: drm/nv50/crtc: Bail out if FB is not bound to crtc
X-Git-Tag: v3.1-rc6~1^2~1^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ffbc559b0699891c6deb9fd2b4750671eab94999;p=pandora-kernel.git

drm/nv50/crtc: Bail out if FB is not bound to crtc

Fixes possbile NULL pointer dereference
Resolves 'kernel crash in nv50_crtc_do_mode_set_base during shutdown'
https://bugs.freedesktop.org/show_bug.cgi?id=40005

Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
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