diff --git a/drivers/gpu/drm/exynos/exynos_drm_gsc.c b/drivers/gpu/drm/exynos/exynos_drm_gsc.c
index 45e9aee8366a..b01f36e76eaf 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_gsc.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_gsc.c
@@ -118,6 +118,7 @@ struct gsc_context {
  * struct gsc_driverdata - per device type driver data for init time.
  *
  * @limits: picture size limits array
+ * @num_limits: number of items in the aforementioned array
  * @clk_names: names of clocks needed by this variant
  * @num_clocks: the number of clocks needed by this variant
  */