watchdog: aspeed_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-patches

Cc: Joel Stanley <joel@jms.id.au>
Cc: Andrew Jeffery <andrew@aj.id.au>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>

drivers/watchdog/aspeed_wdt.c

@@ -187,6 +187,7 @@ static const struct watchdog_info aspeed_wdt_info = {
 
 static int aspeed_wdt_probe(struct platform_device *pdev)
 {
+	struct device *dev = &pdev->dev;
 	const struct aspeed_wdt_config *config;
 	const struct of_device_id *ofdid;
 	struct aspeed_wdt *wdt;
@@ -196,7 +197,7 @@ static int aspeed_wdt_probe(struct platform_device *pdev)
 	u32 status;
 	int ret;
 
-	wdt = devm_kzalloc(&pdev->dev, sizeof(*wdt), GFP_KERNEL);
+	wdt = devm_kzalloc(dev, sizeof(*wdt), GFP_KERNEL);
 	if (!wdt)
 		return -ENOMEM;
 
@@ -212,12 +213,12 @@ static int aspeed_wdt_probe(struct platform_device *pdev)
 	wdt->wdd.info = &aspeed_wdt_info;
 	wdt->wdd.ops = &aspeed_wdt_ops;
 	wdt->wdd.max_hw_heartbeat_ms = WDT_MAX_TIMEOUT_MS;
-	wdt->wdd.parent = &pdev->dev;
+	wdt->wdd.parent = dev;
 
 	wdt->wdd.timeout = WDT_DEFAULT_TIMEOUT;
-	watchdog_init_timeout(&wdt->wdd, 0, &pdev->dev);
+	watchdog_init_timeout(&wdt->wdd, 0, dev);
 
-	np = pdev->dev.of_node;
+	np = dev->of_node;
 
 	ofdid = of_match_node(aspeed_wdt_of_table, np);
 	if (!ofdid)
@@ -286,10 +287,10 @@ static int aspeed_wdt_probe(struct platform_device *pdev)
 		u32 max_duration = config->ext_pulse_width_mask + 1;
 
 		if (duration == 0 || duration > max_duration) {
-			dev_err(&pdev->dev, "Invalid pulse duration: %uus\n",
+			dev_err(dev, "Invalid pulse duration: %uus\n",
 				duration);
 			duration = max(1U, min(max_duration, duration));
-			dev_info(&pdev->dev, "Pulse duration set to %uus\n",
+			dev_info(dev, "Pulse duration set to %uus\n",
 				 duration);
 		}
 
@@ -312,9 +313,9 @@ static int aspeed_wdt_probe(struct platform_device *pdev)
 	if (status & WDT_TIMEOUT_STATUS_BOOT_SECONDARY)
 		wdt->wdd.bootstatus = WDIOF_CARDRESET;
 
-	ret = devm_watchdog_register_device(&pdev->dev, &wdt->wdd);
+	ret = devm_watchdog_register_device(dev, &wdt->wdd);
 	if (ret) {
-		dev_err(&pdev->dev, "failed to register\n");
+		dev_err(dev, "failed to register\n");
 		return ret;
 	}