1 files changed, 15 insertions, 1 deletions

diff --git a/drivers/gpu/drm/omapdrm/omap_drv.c b/drivers/gpu/drm/omapdrm/omap_drv.c
index f85c9c8d8467..3f2554235225 100644
--- a/drivers/gpu/drm/omapdrm/omap_drv.c
+++ b/drivers/gpu/drm/omapdrm/omap_drv.c
@@ -96,8 +96,22 @@ static void omap_atomic_complete(struct omap_atomic_state_commit *commit)
         dispc_runtime_get();
 
         drm_atomic_helper_commit_modeset_disables(dev, old_state);
-        drm_atomic_helper_commit_planes(dev, old_state, 0);
+
+        /* With the current dss dispc implementation we have to enable
+         * the new modeset before we can commit planes. The dispc ovl
+         * configuration relies on the video mode configuration been
+         * written into the HW when the ovl configuration is
+         * calculated.
+         *
+         * This approach is not ideal because after a mode change the
+         * plane update is executed only after the first vblank
+         * interrupt. The dispc implementation should be fixed so that
+         * it is able use uncommitted drm state information.
+         */
         drm_atomic_helper_commit_modeset_enables(dev, old_state);
+        omap_atomic_wait_for_completion(dev, old_state);
+
+        drm_atomic_helper_commit_planes(dev, old_state, 0);
 
         omap_atomic_wait_for_completion(dev, old_state);