1 files changed, 20 insertions, 0 deletions

diff --git a/drivers/gpu/drm/msm/msm_atomic.c b/drivers/gpu/drm/msm/msm_atomic.c
index 191968256c58..2c396540e279 100644
--- a/drivers/gpu/drm/msm/msm_atomic.c
+++ b/drivers/gpu/drm/msm/msm_atomic.c
@@ -127,6 +127,26 @@ static void add_fb(struct msm_commit *c, struct drm_framebuffer *fb)
 }
 
 
+int msm_atomic_check(struct drm_device *dev,
+                     struct drm_atomic_state *state)
+{
+        int ret;
+
+        /*
+         * msm ->atomic_check can update ->mode_changed for pixel format
+         * changes, hence must be run before we check the modeset changes.
+         */
+        ret = drm_atomic_helper_check_planes(dev, state);
+        if (ret)
+                return ret;
+
+        ret = drm_atomic_helper_check_modeset(dev, state);
+        if (ret)
+                return ret;
+
+        return ret;
+}
+
 /**
  * drm_atomic_helper_commit - commit validated state object
  * @dev: DRM device