drm/radeon: update wait_for_vblank for evergreen+
authorAlex Deucher <alexander.deucher@amd.com>
Tue, 9 Apr 2013 22:49:59 +0000 (18:49 -0400)
committerAlex Deucher <alexander.deucher@amd.com>
Mon, 22 Apr 2013 14:39:07 +0000 (10:39 -0400)
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

No differences found