diff --git a/drivers/gpu/drm/udl/udl_drv.c b/drivers/gpu/drm/udl/udl_drv.c
index cd8b017..a606590 100644
--- a/drivers/gpu/drm/udl/udl_drv.c
+++ b/drivers/gpu/drm/udl/udl_drv.c
@@ -53,6 +53,7 @@ static struct drm_driver driver = {
 	.load = udl_driver_load,
 	.unload = udl_driver_unload,
 	.set_busid = udl_driver_set_busid,
+	.get_vblank_counter = drm_vblank_count,
 
 	/* gem hooks */
 	.gem_free_object = udl_gem_free_object,