diff --git a/drivers/staging/imx-drm/imx-drm-core.c b/drivers/staging/imx-drm/imx-drm-core.c
index 9854a1daf606b..6bc205baa4a5f 100644
--- a/drivers/staging/imx-drm/imx-drm-core.c
+++ b/drivers/staging/imx-drm/imx-drm-core.c
@@ -678,6 +678,7 @@ int imx_drm_encoder_get_mux_id(struct imx_drm_encoder *imx_drm_encoder,
 
 	return i;
 }
+EXPORT_SYMBOL_GPL(imx_drm_encoder_get_mux_id);
 
 /*
  * imx_drm_remove_encoder - remove an encoder