linux-kernel - [PATCH 1/2] drm/panel: ltk050h3146w: add check for mipi_dsi_dcs_enter_sleep

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Message-Id: <20240620074720.852495-1-nichen@iscas.ac.cn>
Date: Thu, 20 Jun 2024 15:47:20 +0800
From: Chen Ni <nichen@...as.ac.cn>
To: neil.armstrong@...aro.org,
	quic_jesszhan@...cinc.com,
	maarten.lankhorst@...ux.intel.com,
	mripard@...nel.org,
	tzimmermann@...e.de,
	airlied@...il.com,
	daniel@...ll.ch
Cc: dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org,
	Chen Ni <nichen@...as.ac.cn>
Subject: [PATCH 1/2] drm/panel: ltk050h3146w: add check for mipi_dsi_dcs_enter_sleep_mode

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@...as.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