drm/i915: Only emit a flush if there is an outstanding gpu write
authorChris Wilson <chris@chris-wilson.co.uk>
Mon, 6 Dec 2010 14:36:02 +0000 (14:36 +0000)
committerChris Wilson <chris@chris-wilson.co.uk>
Mon, 6 Dec 2010 14:36:02 +0000 (14:36 +0000)
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

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