backlight: gpio: Use a helper variable for &pdev->dev

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: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

diff --git a/drivers/video/backlight/gpio_backlight.c b/drivers/video/backlight/gpio_backlight.c
index ddc7d3b288b7edaa6bb66a37ada816a1cab9d993..d6969fae25cd93160c6eb2f4b2d68321591f277a 100644 (file)
--- a/drivers/video/backlight/gpio_backlight.c
+++ b/drivers/video/backlight/gpio_backlight.c
@@ -78,29 +78,29 @@ static int gpio_backlight_initial_power_state(struct gpio_backlight *gbl)
 
 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;
        int ret, init_brightness;
 
-       gbl = devm_kzalloc(&pdev->dev, sizeof(*gbl), GFP_KERNEL);
+       gbl = devm_kzalloc(dev, sizeof(*gbl), GFP_KERNEL);
        if (gbl == NULL)
                return -ENOMEM;
 
-       gbl->dev = &pdev->dev;
+       gbl->dev = dev;
 
        if (pdata)
                gbl->fbdev = pdata->fbdev;
 
-       gbl->def_value = device_property_read_bool(&pdev->dev, "default-on");
+       gbl->def_value = device_property_read_bool(dev, "default-on");
 
-       gbl->gpiod = devm_gpiod_get(&pdev->dev, NULL, GPIOD_ASIS);
+       gbl->gpiod = devm_gpiod_get(dev, NULL, GPIOD_ASIS);
        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;
        }
@@ -108,11 +108,10 @@ 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);
        }
 
@@ -122,7 +121,7 @@ static int gpio_backlight_probe(struct platform_device *pdev)
        init_brightness = gpio_backlight_get_next_brightness(bl);
        ret = gpiod_direction_output(gbl->gpiod, init_brightness);
        if (ret) {
-               dev_err(&pdev->dev, "failed to set initial brightness\n");
+               dev_err(dev, "failed to set initial brightness\n");
                return ret;
        }