linux-kernel - [PATCH v2 2/7] backlight: l4f00242t03: Simplify with dev_err

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Message-Id: <20240305-backlight-probe-v2-2-609b0cf24bde@linaro.org>
Date: Tue, 05 Mar 2024 09:11:57 +0100
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Lee Jones <lee@...nel.org>, 
 Daniel Thompson <daniel.thompson@...aro.org>, 
 Jingoo Han <jingoohan1@...il.com>, Helge Deller <deller@....de>
Cc: dri-devel@...ts.freedesktop.org, linux-fbdev@...r.kernel.org, 
 linux-kernel@...r.kernel.org, 
 Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [PATCH v2 2/7] backlight: l4f00242t03: Simplify with
 dev_err_probe()

Common pattern of handling deferred probe can be simplified with
dev_err_probe().  Less code and also it prints the error value.

Reviewed-by: Daniel Thompson <daniel.thompson@...aro.org>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
---
 drivers/video/backlight/l4f00242t03.c | 34 ++++++++++++++--------------------
 1 file changed, 14 insertions(+), 20 deletions(-)

diff --git a/drivers/video/backlight/l4f00242t03.c b/drivers/video/backlight/l4f00242t03.c
index cc763cf15f53..bd5137ee203b 100644
--- a/drivers/video/backlight/l4f00242t03.c
+++ b/drivers/video/backlight/l4f00242t03.c
@@ -179,34 +179,28 @@ static int l4f00242t03_probe(struct spi_device *spi)
 	priv->spi = spi;
 
 	priv->reset = devm_gpiod_get(&spi->dev, "reset", GPIOD_OUT_HIGH);
-	if (IS_ERR(priv->reset)) {
-		dev_err(&spi->dev,
-			"Unable to get the lcd l4f00242t03 reset gpio.\n");
-		return PTR_ERR(priv->reset);
-	}
+	if (IS_ERR(priv->reset))
+		return dev_err_probe(&spi->dev, PTR_ERR(priv->reset),
+				     "Unable to get the lcd l4f00242t03 reset gpio.\n");
 	gpiod_set_consumer_name(priv->reset, "lcd l4f00242t03 reset");
 
 	priv->enable = devm_gpiod_get(&spi->dev, "enable", GPIOD_OUT_LOW);
-	if (IS_ERR(priv->enable)) {
-		dev_err(&spi->dev,
-			"Unable to get the lcd l4f00242t03 data en gpio.\n");
-		return PTR_ERR(priv->enable);
-	}
+	if (IS_ERR(priv->enable))
+		return dev_err_probe(&spi->dev, PTR_ERR(priv->enable),
+				     "Unable to get the lcd l4f00242t03 data en gpio.\n");
 	gpiod_set_consumer_name(priv->enable, "lcd l4f00242t03 data enable");
 
 	priv->io_reg = devm_regulator_get(&spi->dev, "vdd");
-	if (IS_ERR(priv->io_reg)) {
-		dev_err(&spi->dev, "%s: Unable to get the IO regulator\n",
-		       __func__);
-		return PTR_ERR(priv->io_reg);
-	}
+	if (IS_ERR(priv->io_reg))
+		return dev_err_probe(&spi->dev, PTR_ERR(priv->io_reg),
+				     "%s: Unable to get the IO regulator\n",
+				     __func__);
 
 	priv->core_reg = devm_regulator_get(&spi->dev, "vcore");
-	if (IS_ERR(priv->core_reg)) {
-		dev_err(&spi->dev, "%s: Unable to get the core regulator\n",
-		       __func__);
-		return PTR_ERR(priv->core_reg);
-	}
+	if (IS_ERR(priv->core_reg))
+		return dev_err_probe(&spi->dev, PTR_ERR(priv->core_reg),
+				     "%s: Unable to get the core regulator\n",
+				     __func__);
 
 	priv->ld = devm_lcd_device_register(&spi->dev, "l4f00242t03", &spi->dev,
 					priv, &l4f_ops);

-- 
2.34.1