drm/i915: Always call fence-lost prior to removing the fence
There is a minute window for a race between put-fence removing the fence and for a new transaction by an external party on the GTT mmap. That is we must zap the mmap prior to removing the fence and not afterwards. Fixes regression from commit 61050808 Author: Chris Wilson <chris@chris-wilson.co.uk> Date: Tue Apr 17 15:31:31 2012 +0100 drm/i915: Refactor put_fence() to use the common fence writing routine v2: Remember the fence to remove with a local variable (gcc) Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Imre Deak <imre.deak@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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