drm/i915: Be paranoid and bail on resetting if we can't take the lock.

This will declare the machine wedged, but is better than truly wedging
the machine.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2010-12-04 18:17:15 +00:00
commit 340479aac6