diff --git a/kernel/drivers/video/rockchip/lcdc/rk3288_lcdc.c b/kernel/drivers/video/rockchip/lcdc/rk3288_lcdc.c
index 8738d2902f..8a99b1654e 100755
--- a/kernel/drivers/video/rockchip/lcdc/rk3288_lcdc.c
+++ b/kernel/drivers/video/rockchip/lcdc/rk3288_lcdc.c
@@ -1279,6 +1279,11 @@ static int rk3288_load_screen(struct rk_lcdc_driver *dev_drv, bool initscreen)
 			mask = m_EDP_OUT_EN;
 			val = v_EDP_OUT_EN(1);
 			break;
+		default:
+			mask = 0;
+			val = 0;
+			pr_info("unknow screen type: %d\n", screen->type);
+			break;
 		}
 		lcdc_msk_reg(lcdc_dev, SYS_CTRL, mask, val);
 #ifndef CONFIG_RK_FPGA
diff --git a/kernel/drivers/video/rockchip/screen/rk_screen.c b/kernel/drivers/video/rockchip/screen/rk_screen.c
index 4b2d5ace12..d5e3b15247 100755
--- a/kernel/drivers/video/rockchip/screen/rk_screen.c
+++ b/kernel/drivers/video/rockchip/screen/rk_screen.c
@@ -14,6 +14,7 @@ int rk_fb_get_extern_screen(struct rk_screen *screen)
 	memcpy(screen, rk_screen, sizeof(struct rk_screen));
 	screen->dsp_lut = NULL;
 	screen->cabc_lut = NULL;
+	screen->type = SCREEN_NULL;
 
 	return 0;
 }