Dan Carpenter be636387f8 drm/i915: dereferencing an error pointer
We need to check that "ctx" is a valid pointer before dereferencing it.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2012-07-25 10:39:58 +02:00
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