diff --git a/[refs] b/[refs]
index 76a196478acb..623394de2a2c 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 65384a1d41c4e91f0b49d90d11b7f424d6e5c58e
+refs/heads/master: ce227c4183a2c18c9e5467b7e92d47140e763ab9
diff --git a/trunk/drivers/gpu/drm/radeon/radeon_connectors.c b/trunk/drivers/gpu/drm/radeon/radeon_connectors.c
index 3fba50540f72..3bc20406d45b 100644
--- a/trunk/drivers/gpu/drm/radeon/radeon_connectors.c
+++ b/trunk/drivers/gpu/drm/radeon/radeon_connectors.c
@@ -287,6 +287,7 @@ int radeon_connector_set_property(struct drm_connector *connector, struct drm_pr
 
 	if (property == rdev->mode_info.coherent_mode_property) {
 		struct radeon_encoder_atom_dig *dig;
+		bool new_coherent_mode;
 
 		/* need to find digital encoder on connector */
 		encoder = radeon_find_encoder(connector, DRM_MODE_ENCODER_TMDS);
@@ -299,8 +300,11 @@ int radeon_connector_set_property(struct drm_connector *connector, struct drm_pr
 			return 0;
 
 		dig = radeon_encoder->enc_priv;
-		dig->coherent_mode = val ? true : false;
-		radeon_property_change_mode(&radeon_encoder->base);
+		new_coherent_mode = val ? true : false;
+		if (dig->coherent_mode != new_coherent_mode) {
+			dig->coherent_mode = new_coherent_mode;
+			radeon_property_change_mode(&radeon_encoder->base);
+		}
 	}
 
 	if (property == rdev->mode_info.tv_std_property) {