return ret;
 }
 
-static struct drm_encoder *dm_mst_best_encoder(struct drm_connector *connector)
+static struct drm_encoder *
+dm_mst_atomic_best_encoder(struct drm_connector *connector,
+                          struct drm_connector_state *connector_state)
 {
-       struct amdgpu_dm_connector *amdgpu_dm_connector = to_amdgpu_dm_connector(connector);
-
-       return &amdgpu_dm_connector->mst_encoder->base;
+       return &to_amdgpu_dm_connector(connector)->mst_encoder->base;
 }
 
 static const struct drm_connector_helper_funcs dm_dp_mst_connector_helper_funcs = {
        .get_modes = dm_dp_mst_get_modes,
        .mode_valid = amdgpu_dm_connector_mode_valid,
-       .best_encoder = dm_mst_best_encoder,
+       .atomic_best_encoder = dm_mst_atomic_best_encoder,
 };
 
 static void amdgpu_dm_encoder_destroy(struct drm_encoder *encoder)