From d7426512abe39475f94c50f103a9766e42f880ef Mon Sep 17 00:00:00 2001
From: Cai Huoqing <caihuoqing@baidu.com>
Date: Thu, 16 Sep 2021 18:46:27 +0800
Subject: drm/panel: s6e63j0x03: Make use of the helper function
 dev_err_probe()
Git-commit: 94f9b9525c0a2e8aac741f8e0a2d71c4e2771ba9
Patch-mainline: v5.17-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225

When possible use dev_err_probe help to properly deal with the
PROBE_DEFER error, the benefit is that DEFER issue will be logged
in the devices_deferred debugfs file.
And using dev_err_probe() can reduce code size, the error value
gets printed.

Signed-off-by: Cai Huoqing <caihuoqing@baidu.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210916104627.11622-1-caihuoqing@baidu.com
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
 .../gpu/drm/panel/panel-samsung-s6e63j0x03.c  | 21 +++++++------------
 1 file changed, 8 insertions(+), 13 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c b/drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c
index ccc8ed6fe3ae..e38262b67ff7 100644
--- a/drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c
+++ b/drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c
@@ -452,27 +452,22 @@ static int s6e63j0x03_probe(struct mipi_dsi_device *dsi)
 	ctx->supplies[1].supply = "vci";
 	ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ctx->supplies),
 				      ctx->supplies);
-	if (ret < 0) {
-		dev_err(dev, "failed to get regulators: %d\n", ret);
-		return ret;
-	}
+	if (ret < 0)
+		return dev_err_probe(dev, ret, "failed to get regulators\n");
 
 	ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
-	if (IS_ERR(ctx->reset_gpio)) {
-		dev_err(dev, "cannot get reset-gpio: %ld\n",
-				PTR_ERR(ctx->reset_gpio));
-		return PTR_ERR(ctx->reset_gpio);
-	}
+	if (IS_ERR(ctx->reset_gpio))
+		return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),
+				     "cannot get reset-gpio\n");
 
 	drm_panel_init(&ctx->panel, dev, &s6e63j0x03_funcs,
 		       DRM_MODE_CONNECTOR_DSI);
 
 	ctx->bl_dev = backlight_device_register("s6e63j0x03", dev, ctx,
 						&s6e63j0x03_bl_ops, NULL);
-	if (IS_ERR(ctx->bl_dev)) {
-		dev_err(dev, "failed to register backlight device\n");
-		return PTR_ERR(ctx->bl_dev);
-	}
+	if (IS_ERR(ctx->bl_dev))
+		return dev_err_probe(dev, PTR_ERR(ctx->bl_dev),
+				     "failed to register backlight device\n");
 
 	ctx->bl_dev->props.max_brightness = MAX_BRIGHTNESS;
 	ctx->bl_dev->props.brightness = DEFAULT_BRIGHTNESS;
-- 
2.38.1