diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c
index 9a6d652a3ef2..d939dc560525 100644
--- a/drivers/gpu/drm/exynos/exynos_hdmi.c
+++ b/drivers/gpu/drm/exynos/exynos_hdmi.c
@@ -204,11 +204,11 @@ struct hdmiphy_config {
 	u8 conf[32];
 };
 
-struct hdmi_driver_data exynos4212_hdmi_driver_data = {
+static struct hdmi_driver_data exynos4212_hdmi_driver_data = {
 	.type	= HDMI_TYPE14,
 };
 
-struct hdmi_driver_data exynos5_hdmi_driver_data = {
+static struct hdmi_driver_data exynos5_hdmi_driver_data = {
 	.type	= HDMI_TYPE14,
 };