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

Add helper variable dev = &pdev->dev

Signed-off-by: Hoan Nguyen An <na-hoan@jinso.co.jp>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>

diff --git a/drivers/watchdog/renesas_wdt.c b/drivers/watchdog/renesas_wdt.c
index 565dbc1ec6388fc9cf00ff158c7f72af78779af3..d8ac2299400b5ddb179cb445f8afc7a4f7874076 100644 (file)
--- a/drivers/watchdog/renesas_wdt.c
+++ b/drivers/watchdog/renesas_wdt.c
@@ -175,15 +175,16 @@ static inline bool rwdt_blacklisted(struct device *dev) { return false; }
 
 static int rwdt_probe(struct platform_device *pdev)
 {
+       struct device *dev = &pdev->dev;
        struct rwdt_priv *priv;
        struct clk *clk;
        unsigned long clks_per_sec;
        int ret, i;
 
-       if (rwdt_blacklisted(&pdev->dev))
+       if (rwdt_blacklisted(dev))
                return -ENODEV;
 
-       priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
+       priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
        if (!priv)
                return -ENOMEM;
 
@@ -191,16 +192,16 @@ static int rwdt_probe(struct platform_device *pdev)
        if (IS_ERR(priv->base))
                return PTR_ERR(priv->base);
 
-       clk = devm_clk_get(&pdev->dev, NULL);
+       clk = devm_clk_get(dev, NULL);
        if (IS_ERR(clk))
                return PTR_ERR(clk);
 
-       pm_runtime_enable(&pdev->dev);
-       pm_runtime_get_sync(&pdev->dev);
+       pm_runtime_enable(dev);
+       pm_runtime_get_sync(dev);
        priv->clk_rate = clk_get_rate(clk);
        priv->wdev.bootstatus = (readb_relaxed(priv->base + RWTCSRA) &
                                RWTCSRA_WOVF) ? WDIOF_CARDRESET : 0;
-       pm_runtime_put(&pdev->dev);
+       pm_runtime_put(dev);
 
        if (!priv->clk_rate) {
                ret = -ENOENT;
@@ -216,14 +217,14 @@ static int rwdt_probe(struct platform_device *pdev)
        }
 
        if (i < 0) {
-               dev_err(&pdev->dev, "Can't find suitable clock divider\n");
+               dev_err(dev, "Can't find suitable clock divider\n");
                ret = -ERANGE;
                goto out_pm_disable;
        }
 
        priv->wdev.info = &rwdt_ident;
        priv->wdev.ops = &rwdt_ops;
-       priv->wdev.parent = &pdev->dev;
+       priv->wdev.parent = dev;
        priv->wdev.min_timeout = 1;
        priv->wdev.max_timeout = DIV_BY_CLKS_PER_SEC(priv, 65536);
        priv->wdev.timeout = min(priv->wdev.max_timeout, RWDT_DEFAULT_TIMEOUT);
@@ -235,7 +236,7 @@ static int rwdt_probe(struct platform_device *pdev)
        watchdog_stop_on_unregister(&priv->wdev);
 
        /* This overrides the default timeout only if DT configuration was found */
-       watchdog_init_timeout(&priv->wdev, 0, &pdev->dev);
+       watchdog_init_timeout(&priv->wdev, 0, dev);
 
        ret = watchdog_register_device(&priv->wdev);
        if (ret < 0)
@@ -244,7 +245,7 @@ static int rwdt_probe(struct platform_device *pdev)
        return 0;
 
  out_pm_disable:
-       pm_runtime_disable(&pdev->dev);
+       pm_runtime_disable(dev);
        return ret;
 }