diff --git a/drivers/staging/gma500/mrst_hdmi.c b/drivers/staging/gma500/mrst_hdmi.c
index d6a517971ba8de8f4e6e9087dbe2d6924acfb659..e66607eb3d3e99bd7347c6a84d9f8a3a1e746778 100644
--- a/drivers/staging/gma500/mrst_hdmi.c
+++ b/drivers/staging/gma500/mrst_hdmi.c
@@ -129,7 +129,7 @@ static void wait_for_vblank(struct drm_device *dev)
 {
 	/* FIXME: Can we do this as a sleep ? */
 	/* Wait for 20ms, i.e. one cycle at 50hz. */
-	udelay(20000);
+	mdelay(20);
 }
 
 static void scu_busy_loop(void *scu_base)