linux-kernel - [PATCH v3 2/3] backlight: mp3309c: use dev_err_probe() instead of dev

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Date: Thu,  8 Feb 2024 20:24:47 +0200
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Daniel Thompson <daniel.thompson@...aro.org>,
	Flavio Suligoi <f.suligoi@...m.it>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	dri-devel@...ts.freedesktop.org,
	linux-fbdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: Lee Jones <lee@...nel.org>,
	Jingoo Han <jingoohan1@...il.com>,
	Helge Deller <deller@....de>
Subject: [PATCH v3 2/3] backlight: mp3309c: use dev_err_probe() instead of dev_err()

Replace dev_err() with dev_err_probe().

This helps in simplifing code and standardizing the error output.

Tested-by: Flavio Suligoi <f.suligoi@...m.it>
Reviewed-by: Daniel Thompson <daniel.thompson@...aro.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/video/backlight/mp3309c.c | 18 +++++++-----------
 1 file changed, 7 insertions(+), 11 deletions(-)

diff --git a/drivers/video/backlight/mp3309c.c b/drivers/video/backlight/mp3309c.c
index 397f35dafc5e..426e9f2356ad 100644
--- a/drivers/video/backlight/mp3309c.c
+++ b/drivers/video/backlight/mp3309c.c
@@ -208,10 +208,8 @@ static int mp3309c_parse_fwnode(struct mp3309c_chip *chip,
 	unsigned int num_levels, tmp_value;
 	struct device *dev = chip->dev;
 
-	if (!dev_fwnode(dev)) {
-		dev_err(dev, "failed to get firmware node\n");
-		return -ENODEV;
-	}
+	if (!dev_fwnode(dev))
+		return dev_err_probe(dev, -ENODEV, "failed to get firmware node\n");
 
 	/*
 	 * Dimming mode: the MP3309C provides two dimming control mode:
@@ -287,8 +285,7 @@ static int mp3309c_parse_fwnode(struct mp3309c_chip *chip,
 	if (ret)
 		pdata->default_brightness = pdata->max_brightness;
 	if (pdata->default_brightness > pdata->max_brightness) {
-		dev_err(chip->dev,
-			"default brightness exceeds max brightness\n");
+		dev_err_probe(dev, -ERANGE, "default brightness exceeds max brightness\n");
 		pdata->default_brightness = pdata->max_brightness;
 	}
 
@@ -329,16 +326,15 @@ static int mp3309c_parse_fwnode(struct mp3309c_chip *chip,
 
 static int mp3309c_probe(struct i2c_client *client)
 {
-	struct mp3309c_platform_data *pdata = dev_get_platdata(&client->dev);
+	struct device *dev = &client->dev;
+	struct mp3309c_platform_data *pdata = dev_get_platdata(dev);
 	struct mp3309c_chip *chip;
 	struct backlight_properties props;
 	struct pwm_state pwmstate;
 	int ret;
 
-	if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
-		dev_err(&client->dev, "failed to check i2c functionality\n");
-		return -EOPNOTSUPP;
-	}
+	if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C))
+		return dev_err_probe(dev, -EOPNOTSUPP, "failed to check i2c functionality\n");
 
 	chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL);
 	if (!chip)
-- 
2.43.0.rc1.1.gbec44491f096