linux-kernel - [PATCH linux-next v2] drm/panel: Simplify with dev_err

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Message-Id: <3ac20d355b0b3ad3cedb87c8f4efa819a055624b.1702967834.git.chen.haonan2@zte.com.cn>
Date: Mon, 25 Dec 2023 22:26:15 +0800
From: chenguanxi11234@....com
To: hanxu5@...qin.corp-partner.google.com
Cc: cgel.zte@...il.com,
	neil.armstrong@...aro.org,
	quic_jesszhan@...cinc.com,
	sam@...nborg.org,
	maarten.lankhorst@...ux.intel.com,
	mripard@...nel.org,
	tzimmermann@...e.de,
	airlied@...il.com,
	daniel@...ll.ch,
	dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org,
	yang.guang5@....com.cn,
	jiang.xuexin@....com.cn,
	Chen Haonan <chen.haonan2@....com.cn>
Subject: [PATCH linux-next v2] drm/panel: Simplify with dev_err_probe()

From: Chen Haonan <chen.haonan2@....com.cn>

dev_err_probe() can check if the error code is -EPROBE_DEFER 
and can return the error code, replacing dev_err() with it 
simplifies the code.

Signed-off-by: Chen Haonan <chen.haonan2@....com.cn>
---
 drivers/gpu/drm/panel/panel-boe-himax8279d.c | 18 ++++++------------
 1 file changed, 6 insertions(+), 12 deletions(-)
diff --git a/drivers/gpu/drm/panel/panel-boe-himax8279d.c b/drivers/gpu/drm/panel/panel-boe-himax8279d.c
index 11b64acbe8a9..e225840b0d67 100644
--- a/drivers/gpu/drm/panel/panel-boe-himax8279d.c
+++ b/drivers/gpu/drm/panel/panel-boe-himax8279d.c
@@ -854,26 +854,20 @@ static int panel_add(struct panel_info *pinfo)
 
 	pinfo->pp18_gpio = devm_gpiod_get(dev, "pp18", GPIOD_OUT_HIGH);
 	if (IS_ERR(pinfo->pp18_gpio)) {
-		ret = PTR_ERR(pinfo->pp18_gpio);
-		if (ret != -EPROBE_DEFER)
-			dev_err(dev, "failed to get pp18 gpio: %d\n", ret);
-		return ret;
+		return dev_err_probe(dev, PTR_ERR(pinfo->pp18_gpio),
+							 "failed to get pp18 gpio\n");
 	}
 
 	pinfo->pp33_gpio = devm_gpiod_get(dev, "pp33", GPIOD_OUT_HIGH);
 	if (IS_ERR(pinfo->pp33_gpio)) {
-		ret = PTR_ERR(pinfo->pp33_gpio);
-		if (ret != -EPROBE_DEFER)
-			dev_err(dev, "failed to get pp33 gpio: %d\n", ret);
-		return ret;
+		return	dev_err_probe(dev, PTR_ERR(pinfo->pp33_gpio),
+							 "failed to get pp33 gpio\n");
 	}
 
 	pinfo->enable_gpio = devm_gpiod_get(dev, "enable", GPIOD_OUT_HIGH);
 	if (IS_ERR(pinfo->enable_gpio)) {
-		ret = PTR_ERR(pinfo->enable_gpio);
-		if (ret != -EPROBE_DEFER)
-			dev_err(dev, "failed to get enable gpio: %d\n", ret);
-		return ret;
+		return	dev_err_probe(dev, PTR_ERR(pinfo->enable_gpio),
+						 "failed to get enable gpio\n");
 	}
 
 	drm_panel_init(&pinfo->base, dev, &panel_funcs,
-- 
2.25.1