drm/radeon: update wait_for_vblank for r5xx-r7xx
authorAlex Deucher <alexander.deucher@amd.com>
Tue, 9 Apr 2013 22:41:15 +0000 (18:41 -0400)
committerAlex Deucher <alexander.deucher@amd.com>
Mon, 22 Apr 2013 14:39:06 +0000 (10:39 -0400)
commitbea5497bfc1067620c8c8e9d37a42e0bb6d7d7fa
tree3c5913b56ec701056014404d76f10d6510c92926
parent2b48b968c0d00aa5ab520b65a15a4f374cda7dda
drm/radeon: update wait_for_vblank for r5xx-r7xx

Properly wait for the next vblank region.  The previous
code didn't always wait long enough depending on the timing.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
drivers/gpu/drm/radeon/rs600.c