linux-kernel - [PATCH v6 8/9] backlight: gpio: use a helper variable for &pdev->dev

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Date:   Sat, 19 Oct 2019 10:35:55 +0200
From:   Bartosz Golaszewski <brgl@...ev.pl>
To:     Yoshinori Sato <ysato@...rs.sourceforge.jp>,
        Rich Felker <dalias@...c.org>,
        Lee Jones <lee.jones@...aro.org>,
        Daniel Thompson <daniel.thompson@...aro.org>,
        Jingoo Han <jingoohan1@...il.com>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Jacopo Mondi <jacopo@...ndi.org>
Cc:     linux-sh@...r.kernel.org, linux-kernel@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, linux-fbdev@...r.kernel.org,
        Bartosz Golaszewski <bgolaszewski@...libre.com>
Subject: [PATCH v6 8/9] backlight: gpio: use a helper variable for &pdev->dev

From: Bartosz Golaszewski <bgolaszewski@...libre.com>

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

Signed-off-by: Bartosz Golaszewski <bgolaszewski@...libre.com>
Reviewed-by: Linus Walleij <linus.walleij@...aro.org>
Reviewed-by: Daniel Thompson <daniel.thompson@...aro.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/video/backlight/gpio_backlight.c | 23 +++++++++++------------
 1 file changed, 11 insertions(+), 12 deletions(-)

diff --git a/drivers/video/backlight/gpio_backlight.c b/drivers/video/backlight/gpio_backlight.c
index c829b82f5372..7b411f6ee15a 100644
--- 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_curr_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;
 	}
 
-- 
2.23.0