watchdog: wm831x_wdt: Use 'dev' instead of dereferencing it repeatedly

Introduce local variable 'struct device *dev' and use it instead of
dereferencing it repeatedly.

The conversion was done automatically with coccinelle using the
following semantic patches. The semantic patches and the scripts
used to generate this commit log are available at
https://github.com/groeck/coccinelle-patchesSigned-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>

drivers/watchdog/wm831x_wdt.c

@@ -180,8 +180,9 @@ static const struct watchdog_ops wm831x_wdt_ops = {
 
 static int wm831x_wdt_probe(struct platform_device *pdev)
 {
-	struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent);
-	struct wm831x_pdata *chip_pdata = dev_get_platdata(pdev->dev.parent);
+	struct device *dev = &pdev->dev;
+	struct wm831x *wm831x = dev_get_drvdata(dev->parent);
+	struct wm831x_pdata *chip_pdata = dev_get_platdata(dev->parent);
 	struct wm831x_watchdog_pdata *pdata;
 	struct wm831x_wdt_drvdata *driver_data;
 	struct watchdog_device *wm831x_wdt;
@@ -198,8 +199,7 @@ static int wm831x_wdt_probe(struct platform_device *pdev)
 	if (reg & WM831X_WDOG_DEBUG)
 		dev_warn(wm831x->dev, "Watchdog is paused\n");
 
-	driver_data = devm_kzalloc(&pdev->dev, sizeof(*driver_data),
-				   GFP_KERNEL);
+	driver_data = devm_kzalloc(dev, sizeof(*driver_data), GFP_KERNEL);
 	if (!driver_data)
 		return -ENOMEM;
 
@@ -210,7 +210,7 @@ static int wm831x_wdt_probe(struct platform_device *pdev)
 
 	wm831x_wdt->info = &wm831x_wdt_info;
 	wm831x_wdt->ops = &wm831x_wdt_ops;
-	wm831x_wdt->parent = &pdev->dev;
+	wm831x_wdt->parent = dev;
 	watchdog_set_nowayout(wm831x_wdt, nowayout);
 	watchdog_set_drvdata(wm831x_wdt, driver_data);
 
@@ -240,10 +240,9 @@ static int wm831x_wdt_probe(struct platform_device *pdev)
 		reg |= pdata->software << WM831X_WDOG_RST_SRC_SHIFT;
 
 		if (pdata->update_gpio) {
-			ret = devm_gpio_request_one(&pdev->dev,
-						pdata->update_gpio,
-						GPIOF_OUT_INIT_LOW,
-						"Watchdog update");
+			ret = devm_gpio_request_one(dev, pdata->update_gpio,
+						    GPIOF_OUT_INIT_LOW,
+						    "Watchdog update");
 			if (ret < 0) {
 				dev_err(wm831x->dev,
 					"Failed to request update GPIO: %d\n",
@@ -268,7 +267,7 @@ static int wm831x_wdt_probe(struct platform_device *pdev)
 		}
 	}
 
-	ret = devm_watchdog_register_device(&pdev->dev, &driver_data->wdt);
+	ret = devm_watchdog_register_device(dev, &driver_data->wdt);
 	if (ret != 0) {
 		dev_err(wm831x->dev, "watchdog_register_device() failed: %d\n",
 			ret);