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drm/i915: Wait for vblank before unpinning old fb
authorChris Wilson <chris@chris-wilson.co.uk>
Tue, 14 Dec 2010 16:09:31 +0000 (16:09 +0000)
committerChris Wilson <chris@chris-wilson.co.uk>
Wed, 15 Dec 2010 10:33:23 +0000 (10:33 +0000)
Be paranoid and ensure that the vblank has passed and the scanout has
switched to the new fb, before unpinning the old one and possibly
tearing down its PTEs.

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

No differences found
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