[v3,7/7] backlight: gpio: use a helper variable for &pdev->dev
diff mbox series

Message ID 20190724082508.27617-8-brgl@bgdev.pl
State New
Headers show
Series
  • backlight: gpio: simplify the driver
Related show

Commit Message

Bartosz Golaszewski July 24, 2019, 8:25 a.m. UTC
From: Bartosz Golaszewski <bgolaszewski@baylibre.com>

Instead of dereferencing pdev each time, use a helper variable for
the associated device pointer.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
---
 drivers/video/backlight/gpio_backlight.c | 19 +++++++++----------
 1 file changed, 9 insertions(+), 10 deletions(-)

Comments

Daniel Thompson July 24, 2019, 11:13 a.m. UTC | #1
On Wed, Jul 24, 2019 at 10:25:08AM +0200, Bartosz Golaszewski wrote:
> From: Bartosz Golaszewski <bgolaszewski@baylibre.com>
> 
> Instead of dereferencing pdev each time, use a helper variable for
> the associated device pointer.
> 
> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>

Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>

> ---
>  drivers/video/backlight/gpio_backlight.c | 19 +++++++++----------
>  1 file changed, 9 insertions(+), 10 deletions(-)
> 
> diff --git a/drivers/video/backlight/gpio_backlight.c b/drivers/video/backlight/gpio_backlight.c
> index cd6a75bca9cc..7dc4f90d926b 100644
> --- a/drivers/video/backlight/gpio_backlight.c
> +++ b/drivers/video/backlight/gpio_backlight.c
> @@ -54,29 +54,29 @@ static const struct backlight_ops gpio_backlight_ops = {
>  
>  static int gpio_backlight_probe(struct platform_device *pdev)
>  {
> -	struct gpio_backlight_platform_data *pdata =
> -		dev_get_platdata(&pdev->dev);
> +	struct device *dev = &pdev->dev;
> +	struct gpio_backlight_platform_data *pdata = dev_get_platdata(dev);
>  	struct backlight_properties props;
>  	struct backlight_device *bl;
>  	struct gpio_backlight *gbl;
>  	enum gpiod_flags flags;
>  	int ret, def_value;
>  
> -	gbl = devm_kzalloc(&pdev->dev, sizeof(*gbl), GFP_KERNEL);
> +	gbl = devm_kzalloc(dev, sizeof(*gbl), GFP_KERNEL);
>  	if (gbl == NULL)
>  		return -ENOMEM;
>  
>  	if (pdata)
>  		gbl->fbdev = pdata->fbdev;
>  
> -	def_value = device_property_read_bool(&pdev->dev, "default-on");
> +	def_value = device_property_read_bool(dev, "default-on");
>  	flags = def_value ? GPIOD_OUT_HIGH : GPIOD_OUT_LOW;
>  
> -	gbl->gpiod = devm_gpiod_get(&pdev->dev, NULL, flags);
> +	gbl->gpiod = devm_gpiod_get(dev, NULL, flags);
>  	if (IS_ERR(gbl->gpiod)) {
>  		ret = PTR_ERR(gbl->gpiod);
>  		if (ret != -EPROBE_DEFER) {
> -			dev_err(&pdev->dev,
> +			dev_err(dev,
>  				"Error: The gpios parameter is missing or invalid.\n");
>  		}
>  		return ret;
> @@ -85,11 +85,10 @@ static int gpio_backlight_probe(struct platform_device *pdev)
>  	memset(&props, 0, sizeof(props));
>  	props.type = BACKLIGHT_RAW;
>  	props.max_brightness = 1;
> -	bl = devm_backlight_device_register(&pdev->dev, dev_name(&pdev->dev),
> -					&pdev->dev, gbl, &gpio_backlight_ops,
> -					&props);
> +	bl = devm_backlight_device_register(dev, dev_name(dev), dev, gbl,
> +					    &gpio_backlight_ops, &props);
>  	if (IS_ERR(bl)) {
> -		dev_err(&pdev->dev, "failed to register backlight\n");
> +		dev_err(dev, "failed to register backlight\n");
>  		return PTR_ERR(bl);
>  	}
>  
> -- 
> 2.21.0
>
Andy Shevchenko July 24, 2019, 11:41 a.m. UTC | #2
On Wed, Jul 24, 2019 at 10:25:08AM +0200, Bartosz Golaszewski wrote:
> From: Bartosz Golaszewski <bgolaszewski@baylibre.com>
> 
> Instead of dereferencing pdev each time, use a helper variable for
> the associated device pointer.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

> 
> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
> ---
>  drivers/video/backlight/gpio_backlight.c | 19 +++++++++----------
>  1 file changed, 9 insertions(+), 10 deletions(-)
> 
> diff --git a/drivers/video/backlight/gpio_backlight.c b/drivers/video/backlight/gpio_backlight.c
> index cd6a75bca9cc..7dc4f90d926b 100644
> --- a/drivers/video/backlight/gpio_backlight.c
> +++ b/drivers/video/backlight/gpio_backlight.c
> @@ -54,29 +54,29 @@ static const struct backlight_ops gpio_backlight_ops = {
>  
>  static int gpio_backlight_probe(struct platform_device *pdev)
>  {
> -	struct gpio_backlight_platform_data *pdata =
> -		dev_get_platdata(&pdev->dev);
> +	struct device *dev = &pdev->dev;
> +	struct gpio_backlight_platform_data *pdata = dev_get_platdata(dev);
>  	struct backlight_properties props;
>  	struct backlight_device *bl;
>  	struct gpio_backlight *gbl;
>  	enum gpiod_flags flags;
>  	int ret, def_value;
>  
> -	gbl = devm_kzalloc(&pdev->dev, sizeof(*gbl), GFP_KERNEL);
> +	gbl = devm_kzalloc(dev, sizeof(*gbl), GFP_KERNEL);
>  	if (gbl == NULL)
>  		return -ENOMEM;
>  
>  	if (pdata)
>  		gbl->fbdev = pdata->fbdev;
>  
> -	def_value = device_property_read_bool(&pdev->dev, "default-on");
> +	def_value = device_property_read_bool(dev, "default-on");
>  	flags = def_value ? GPIOD_OUT_HIGH : GPIOD_OUT_LOW;
>  
> -	gbl->gpiod = devm_gpiod_get(&pdev->dev, NULL, flags);
> +	gbl->gpiod = devm_gpiod_get(dev, NULL, flags);
>  	if (IS_ERR(gbl->gpiod)) {
>  		ret = PTR_ERR(gbl->gpiod);
>  		if (ret != -EPROBE_DEFER) {
> -			dev_err(&pdev->dev,
> +			dev_err(dev,
>  				"Error: The gpios parameter is missing or invalid.\n");
>  		}
>  		return ret;
> @@ -85,11 +85,10 @@ static int gpio_backlight_probe(struct platform_device *pdev)
>  	memset(&props, 0, sizeof(props));
>  	props.type = BACKLIGHT_RAW;
>  	props.max_brightness = 1;
> -	bl = devm_backlight_device_register(&pdev->dev, dev_name(&pdev->dev),
> -					&pdev->dev, gbl, &gpio_backlight_ops,
> -					&props);
> +	bl = devm_backlight_device_register(dev, dev_name(dev), dev, gbl,
> +					    &gpio_backlight_ops, &props);
>  	if (IS_ERR(bl)) {
> -		dev_err(&pdev->dev, "failed to register backlight\n");
> +		dev_err(dev, "failed to register backlight\n");
>  		return PTR_ERR(bl);
>  	}
>  
> -- 
> 2.21.0
>

Patch
diff mbox series

diff --git a/drivers/video/backlight/gpio_backlight.c b/drivers/video/backlight/gpio_backlight.c
index cd6a75bca9cc..7dc4f90d926b 100644
--- a/drivers/video/backlight/gpio_backlight.c
+++ b/drivers/video/backlight/gpio_backlight.c
@@ -54,29 +54,29 @@  static const struct backlight_ops gpio_backlight_ops = {
 
 static int gpio_backlight_probe(struct platform_device *pdev)
 {
-	struct gpio_backlight_platform_data *pdata =
-		dev_get_platdata(&pdev->dev);
+	struct device *dev = &pdev->dev;
+	struct gpio_backlight_platform_data *pdata = dev_get_platdata(dev);
 	struct backlight_properties props;
 	struct backlight_device *bl;
 	struct gpio_backlight *gbl;
 	enum gpiod_flags flags;
 	int ret, def_value;
 
-	gbl = devm_kzalloc(&pdev->dev, sizeof(*gbl), GFP_KERNEL);
+	gbl = devm_kzalloc(dev, sizeof(*gbl), GFP_KERNEL);
 	if (gbl == NULL)
 		return -ENOMEM;
 
 	if (pdata)
 		gbl->fbdev = pdata->fbdev;
 
-	def_value = device_property_read_bool(&pdev->dev, "default-on");
+	def_value = device_property_read_bool(dev, "default-on");
 	flags = def_value ? GPIOD_OUT_HIGH : GPIOD_OUT_LOW;
 
-	gbl->gpiod = devm_gpiod_get(&pdev->dev, NULL, flags);
+	gbl->gpiod = devm_gpiod_get(dev, NULL, flags);
 	if (IS_ERR(gbl->gpiod)) {
 		ret = PTR_ERR(gbl->gpiod);
 		if (ret != -EPROBE_DEFER) {
-			dev_err(&pdev->dev,
+			dev_err(dev,
 				"Error: The gpios parameter is missing or invalid.\n");
 		}
 		return ret;
@@ -85,11 +85,10 @@  static int gpio_backlight_probe(struct platform_device *pdev)
 	memset(&props, 0, sizeof(props));
 	props.type = BACKLIGHT_RAW;
 	props.max_brightness = 1;
-	bl = devm_backlight_device_register(&pdev->dev, dev_name(&pdev->dev),
-					&pdev->dev, gbl, &gpio_backlight_ops,
-					&props);
+	bl = devm_backlight_device_register(dev, dev_name(dev), dev, gbl,
+					    &gpio_backlight_ops, &props);
 	if (IS_ERR(bl)) {
-		dev_err(&pdev->dev, "failed to register backlight\n");
+		dev_err(dev, "failed to register backlight\n");
 		return PTR_ERR(bl);
 	}