linux-kernel - [PATCH 11/23] watchdog: pm8916_wdt: Use 'dev' instead of dereferencing it repeatedly

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Date:   Tue,  9 Apr 2019 10:23:49 -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 11/23] watchdog: pm8916_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/pm8916_wdt.c | 21 +++++++++++----------
 1 file changed, 11 insertions(+), 10 deletions(-)

diff --git a/drivers/watchdog/pm8916_wdt.c b/drivers/watchdog/pm8916_wdt.c
index 7f10041fcf5b..2d3652004e39 100644
--- a/drivers/watchdog/pm8916_wdt.c
+++ b/drivers/watchdog/pm8916_wdt.c
@@ -132,15 +132,16 @@ static const struct watchdog_ops pm8916_wdt_ops = {
 
 static int pm8916_wdt_probe(struct platform_device *pdev)
 {
+	struct device *dev = &pdev->dev;
 	struct pm8916_wdt *wdt;
 	struct device *parent;
 	int err, irq;
 
-	wdt = devm_kzalloc(&pdev->dev, sizeof(*wdt), GFP_KERNEL);
+	wdt = devm_kzalloc(dev, sizeof(*wdt), GFP_KERNEL);
 	if (!wdt)
 		return -ENOMEM;
 
-	parent = pdev->dev.parent;
+	parent = dev->parent;
 
 	/*
 	 * The pm8916-pon-wdt is a child of the pon device, which is a child
@@ -150,20 +151,20 @@ static int pm8916_wdt_probe(struct platform_device *pdev)
 	 */
 	wdt->regmap = dev_get_regmap(parent->parent, NULL);
 	if (!wdt->regmap) {
-		dev_err(&pdev->dev, "failed to locate regmap\n");
+		dev_err(dev, "failed to locate regmap\n");
 		return -ENODEV;
 	}
 
 	err = device_property_read_u32(parent, "reg", &wdt->baseaddr);
 	if (err) {
-		dev_err(&pdev->dev, "failed to get pm8916-pon address\n");
+		dev_err(dev, "failed to get pm8916-pon address\n");
 		return err;
 	}
 
 	irq = platform_get_irq(pdev, 0);
 	if (irq > 0) {
-		if (devm_request_irq(&pdev->dev, irq, pm8916_wdt_isr, 0,
-				     "pm8916_wdt", wdt))
+		if (devm_request_irq(dev, irq, pm8916_wdt_isr, 0, "pm8916_wdt",
+				     wdt))
 			irq = 0;
 	}
 
@@ -172,23 +173,23 @@ static int pm8916_wdt_probe(struct platform_device *pdev)
 			   wdt->baseaddr + PON_PMIC_WD_RESET_S2_CTL,
 			   RESET_TYPE_HARD);
 	if (err) {
-		dev_err(&pdev->dev, "failed configure watchdog\n");
+		dev_err(dev, "failed configure watchdog\n");
 		return err;
 	}
 
 	wdt->wdev.info = (irq > 0) ? &pm8916_wdt_pt_ident : &pm8916_wdt_ident,
 	wdt->wdev.ops = &pm8916_wdt_ops,
-	wdt->wdev.parent = &pdev->dev;
+	wdt->wdev.parent = dev;
 	wdt->wdev.min_timeout = PM8916_WDT_MIN_TIMEOUT;
 	wdt->wdev.max_timeout = PM8916_WDT_MAX_TIMEOUT;
 	wdt->wdev.timeout = PM8916_WDT_DEFAULT_TIMEOUT;
 	wdt->wdev.pretimeout = 0;
 	watchdog_set_drvdata(&wdt->wdev, wdt);
 
-	watchdog_init_timeout(&wdt->wdev, 0, &pdev->dev);
+	watchdog_init_timeout(&wdt->wdev, 0, dev);
 	pm8916_wdt_configure_timers(&wdt->wdev);
 
-	return devm_watchdog_register_device(&pdev->dev, &wdt->wdev);
+	return devm_watchdog_register_device(dev, &wdt->wdev);
 }
 
 static const struct of_device_id pm8916_wdt_id_table[] = {
-- 
2.7.4