linux-kernel - [PATCH v2 7/7] backlight: gpio: use a helper variable for &pdev->dev

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Message-Id: <20190722150302.29526-8-brgl@bgdev.pl>
Date:   Mon, 22 Jul 2019 17:03:02 +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>
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 v2 7/7] 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>
---
 drivers/video/backlight/gpio_backlight.c | 22 ++++++++++++----------
 1 file changed, 12 insertions(+), 10 deletions(-)

diff --git a/drivers/video/backlight/gpio_backlight.c b/drivers/video/backlight/gpio_backlight.c
index cd6a75bca9cc..091ff799659a 100644
--- a/drivers/video/backlight/gpio_backlight.c
+++ b/drivers/video/backlight/gpio_backlight.c
@@ -54,29 +54,32 @@ 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 gpio_backlight_platform_data *pdata;
 	struct backlight_properties props;
 	struct backlight_device *bl;
 	struct gpio_backlight *gbl;
 	enum gpiod_flags flags;
+	struct device *dev;
 	int ret, def_value;
 
-	gbl = devm_kzalloc(&pdev->dev, sizeof(*gbl), GFP_KERNEL);
+	dev = &pdev->dev;
+	pdata = dev_get_platdata(dev);
+
+	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 +88,10 @@ 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