linux-kernel - [PATCH 15/23] watchdog: rza_wdt: Use 'dev' instead of dereferencing it repeatedly

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Message-Id: <1554830641-9247-16-git-send-email-linux@roeck-us.net>
Date:   Tue,  9 Apr 2019 10:23:53 -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 15/23] watchdog: rza_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/rza_wdt.c | 21 +++++++++++----------
 1 file changed, 11 insertions(+), 10 deletions(-)

diff --git a/drivers/watchdog/rza_wdt.c b/drivers/watchdog/rza_wdt.c
index b854f0aeb3ef..7b6c365f7cd3 100644
--- a/drivers/watchdog/rza_wdt.c
+++ b/drivers/watchdog/rza_wdt.c
@@ -166,11 +166,12 @@ static const struct watchdog_ops rza_wdt_ops = {
 
 static int rza_wdt_probe(struct platform_device *pdev)
 {
+	struct device *dev = &pdev->dev;
 	struct rza_wdt *priv;
 	unsigned long rate;
 	int ret;
 
-	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
+	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
 	if (!priv)
 		return -ENOMEM;
 
@@ -178,21 +179,21 @@ static int rza_wdt_probe(struct platform_device *pdev)
 	if (IS_ERR(priv->base))
 		return PTR_ERR(priv->base);
 
-	priv->clk = devm_clk_get(&pdev->dev, NULL);
+	priv->clk = devm_clk_get(dev, NULL);
 	if (IS_ERR(priv->clk))
 		return PTR_ERR(priv->clk);
 
 	rate = clk_get_rate(priv->clk);
 	if (rate < 16384) {
-		dev_err(&pdev->dev, "invalid clock rate (%ld)\n", rate);
+		dev_err(dev, "invalid clock rate (%ld)\n", rate);
 		return -ENOENT;
 	}
 
 	priv->wdev.info = &rza_wdt_ident,
 	priv->wdev.ops = &rza_wdt_ops,
-	priv->wdev.parent = &pdev->dev;
+	priv->wdev.parent = dev;
 
-	priv->cks = (u8)(uintptr_t)of_device_get_match_data(&pdev->dev);
+	priv->cks = (u8)(uintptr_t) of_device_get_match_data(dev);
 	if (priv->cks == CKS_4BIT) {
 		/* Assume slowest clock rate possible (CKS=0xF) */
 		priv->wdev.max_timeout = (DIVIDER_4BIT * U8_MAX) / rate;
@@ -207,19 +208,19 @@ static int rza_wdt_probe(struct platform_device *pdev)
 		 * max_hw_heartbeat_ms.
 		 */
 		priv->wdev.max_hw_heartbeat_ms = (1000 * U8_MAX) / rate;
-		dev_dbg(&pdev->dev, "max hw timeout of %dms\n",
-			 priv->wdev.max_hw_heartbeat_ms);
+		dev_dbg(dev, "max hw timeout of %dms\n",
+			priv->wdev.max_hw_heartbeat_ms);
 	}
 
 	priv->wdev.min_timeout = 1;
 	priv->wdev.timeout = DEFAULT_TIMEOUT;
 
-	watchdog_init_timeout(&priv->wdev, 0, &pdev->dev);
+	watchdog_init_timeout(&priv->wdev, 0, dev);
 	watchdog_set_drvdata(&priv->wdev, priv);
 
-	ret = devm_watchdog_register_device(&pdev->dev, &priv->wdev);
+	ret = devm_watchdog_register_device(dev, &priv->wdev);
 	if (ret)
-		dev_err(&pdev->dev, "Cannot register watchdog device\n");
+		dev_err(dev, "Cannot register watchdog device\n");
 
 	return ret;
 }
-- 
2.7.4