drm/i915/crt: Flush register prior to waiting for vblank.
authorChris Wilson <chris@chris-wilson.co.uk>
Mon, 9 Aug 2010 13:50:53 +0000 (14:50 +0100)
committerChris Wilson <chris@chris-wilson.co.uk>
Wed, 8 Sep 2010 09:13:31 +0000 (10:13 +0100)
If we don't flush the write then we can not be sure that the border
colour will have taken effect by the time we try to read it back.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

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