[PATCH 2/2] drm/panel-xinpeng-xpp055c272: add check for mipi_dsi_dcs_enter_sleep_mode

[Chen Ni]

Add check for the return value of mipi_dsi_dcs_enter_sleep_mode() and
return the error if it fails in order to catch the error.

Signed-off-by: Chen Ni <nichen at iscas.ac.cn>
---
 drivers/gpu/drm/panel/panel-xinpeng-xpp055c272.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/panel/panel-xinpeng-xpp055c272.c b/drivers/gpu/drm/panel/panel-xinpeng-xpp055c272.c
index 22a14006765e..d7c9df673f35 100644
--- a/drivers/gpu/drm/panel/panel-xinpeng-xpp055c272.c
+++ b/drivers/gpu/drm/panel/panel-xinpeng-xpp055c272.c
@@ -139,7 +139,7 @@ static int xpp055c272_unprepare(struct drm_panel *panel)
 	if (ret < 0)
 		dev_err(ctx->dev, "failed to set display off: %d\n", ret);
 
-	mipi_dsi_dcs_enter_sleep_mode(dsi);
+	ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
 	if (ret < 0) {
 		dev_err(ctx->dev, "failed to enter sleep mode: %d\n", ret);
 		return ret;
-- 
2.25.1