diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c
index d05ca7901315354e36994aa280f417dfa4fe203d..0186e500d2a544d8c90769428c7673bec1cd68c0 100644
--- a/drivers/gpu/drm/mediatek/mtk_dpi.c
+++ b/drivers/gpu/drm/mediatek/mtk_dpi.c
@@ -432,11 +432,6 @@ static int mtk_dpi_set_display_mode(struct mtk_dpi *dpi,
 	unsigned long pll_rate;
 	unsigned int factor;
 
-	if (!dpi) {
-		dev_err(dpi->dev, "invalid argument\n");
-		return -EINVAL;
-	}
-
 	pix_rate = 1000UL * mode->clock;
 	if (mode->clock <= 74000)
 		factor = 8 * 3;