diff --git a/drivers/video/fbdev/msm/mdss_dsi.c b/drivers/video/fbdev/msm/mdss_dsi.c
index 797c8b4a2eb1..d5caf0e6bb1c 100644
--- a/drivers/video/fbdev/msm/mdss_dsi.c
+++ b/drivers/video/fbdev/msm/mdss_dsi.c
@@ -1815,7 +1815,7 @@ static int mdss_dsi_post_panel_on(struct mdss_panel_data *pdata)
 	return 0;
 }
 
-irqreturn_t test_hw_vsync_handler(int irq, void *data)
+static irqreturn_t test_hw_vsync_handler(int irq, void *data)
 {
 	struct mdss_panel_data *pdata = (struct mdss_panel_data *)data;