linux-kernel - [PATCH 09/22] watchdog: xen_wdt: Use 'dev' instead of dereferencing it repeatedly

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Date:   Wed, 10 Apr 2019 09:27:50 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Wim Van Sebroeck <wim@...ux-watchdog.org>
Cc:     linux-watchdog@...r.kernel.org, linux-kernel@...r.kernel.org,
        Guenter Roeck <linux@...ck-us.net>
Subject: [PATCH 09/22] watchdog: xen_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

Signed-off-by: Guenter Roeck <linux@...ck-us.net>
---
 drivers/watchdog/xen_wdt.c | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/drivers/watchdog/xen_wdt.c b/drivers/watchdog/xen_wdt.c
index f1c016d015b3..6c1ca1f31cbc 100644
--- a/drivers/watchdog/xen_wdt.c
+++ b/drivers/watchdog/xen_wdt.c
@@ -122,35 +122,35 @@ static struct watchdog_device xen_wdt_dev = {
 
 static int xen_wdt_probe(struct platform_device *pdev)
 {
+	struct device *dev = &pdev->dev;
 	struct sched_watchdog wd = { .id = ~0 };
 	int ret = HYPERVISOR_sched_op(SCHEDOP_watchdog, &wd);
 
 	if (ret == -ENOSYS) {
-		dev_err(&pdev->dev, "watchdog not supported by hypervisor\n");
+		dev_err(dev, "watchdog not supported by hypervisor\n");
 		return -ENODEV;
 	}
 
 	if (ret != -EINVAL) {
-		dev_err(&pdev->dev, "unexpected hypervisor error (%d)\n", ret);
+		dev_err(dev, "unexpected hypervisor error (%d)\n", ret);
 		return -ENODEV;
 	}
 
 	if (watchdog_init_timeout(&xen_wdt_dev, timeout, NULL))
-		dev_info(&pdev->dev, "timeout value invalid, using %d\n",
-			xen_wdt_dev.timeout);
+		dev_info(dev, "timeout value invalid, using %d\n",
+			 xen_wdt_dev.timeout);
 	watchdog_set_nowayout(&xen_wdt_dev, nowayout);
 	watchdog_stop_on_reboot(&xen_wdt_dev);
 	watchdog_stop_on_unregister(&xen_wdt_dev);
 
-	ret = devm_watchdog_register_device(&pdev->dev, &xen_wdt_dev);
+	ret = devm_watchdog_register_device(dev, &xen_wdt_dev);
 	if (ret) {
-		dev_err(&pdev->dev, "cannot register watchdog device (%d)\n",
-			ret);
+		dev_err(dev, "cannot register watchdog device (%d)\n", ret);
 		return ret;
 	}
 
-	dev_info(&pdev->dev, "initialized (timeout=%ds, nowayout=%d)\n",
-		xen_wdt_dev.timeout, nowayout);
+	dev_info(dev, "initialized (timeout=%ds, nowayout=%d)\n",
+		 xen_wdt_dev.timeout, nowayout);
 
 	return 0;
 }
-- 
2.7.4