[PATCH 1/2] drm/panel: ltk050h3146w: 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 <nic...@iscas.ac.cn>
---
 drivers/gpu/drm/panel/panel-leadtek-ltk050h3146w.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/panel/panel-leadtek-ltk050h3146w.c 
b/drivers/gpu/drm/panel/panel-leadtek-ltk050h3146w.c
index 292aa26a456d..24bf05d0589f 100644
--- a/drivers/gpu/drm/panel/panel-leadtek-ltk050h3146w.c
+++ b/drivers/gpu/drm/panel/panel-leadtek-ltk050h3146w.c
@@ -526,7 +526,7 @@ static int ltk050h3146w_unprepare(struct drm_panel *panel)
                return 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