[PATCH] drm/sti: make crct disable atomic

[Benjamin Gaignard]

Wait until the next vblank to be sure that crtc has been disabled.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard at linaro.org>
Reviewed-by: Daniel Vetter <daniel.vetter at ffwll.ch>
---
 drivers/gpu/drm/sti/sti_crtc.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/sti/sti_crtc.c b/drivers/gpu/drm/sti/sti_crtc.c
index 5824e6aca8f4..61c2379fba87 100644
--- a/drivers/gpu/drm/sti/sti_crtc.c
+++ b/drivers/gpu/drm/sti/sti_crtc.c
@@ -40,6 +40,8 @@ static void sti_crtc_atomic_disable(struct drm_crtc *crtc,
 	DRM_DEBUG_DRIVER("\n");
 
 	mixer->status = STI_MIXER_DISABLING;
+
+	drm_crtc_wait_one_vblank(crtc);
 }
 
 static int
-- 
2.15.0