watchdog: loongson1: Use devm_clk_get_enabled() helper

The devm_clk_get_enabled() helper:
   - calls devm_clk_get()
   - calls clk_prepare_enable() and registers what is needed in order to
     call clk_disable_unprepare() when needed, as a managed resource.

This simplifies the code and avoids the need of a dedicated function used
with devm_add_action_or_reset().

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/624106aa86ef7e49f16b11b229528eabd63de8f7.1672485257.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>

diff --git a/drivers/watchdog/loongson1_wdt.c b/drivers/watchdog/loongson1_wdt.c
index bb3d075..c55656c 100644 (file)
--- a/drivers/watchdog/loongson1_wdt.c
+++ b/drivers/watchdog/loongson1_wdt.c
@@ -79,11 +79,6 @@ static const struct watchdog_ops ls1x_wdt_ops = {
        .set_timeout = ls1x_wdt_set_timeout,
 };
 
-static void ls1x_clk_disable_unprepare(void *data)
-{
-       clk_disable_unprepare(data);
-}
-
 static int ls1x_wdt_probe(struct platform_device *pdev)
 {
        struct device *dev = &pdev->dev;
@@ -100,20 +95,10 @@ static int ls1x_wdt_probe(struct platform_device *pdev)
        if (IS_ERR(drvdata->base))
                return PTR_ERR(drvdata->base);
 
-       drvdata->clk = devm_clk_get(dev, pdev->name);
+       drvdata->clk = devm_clk_get_enabled(dev, pdev->name);
        if (IS_ERR(drvdata->clk))
                return PTR_ERR(drvdata->clk);
 
-       err = clk_prepare_enable(drvdata->clk);
-       if (err) {
-               dev_err(dev, "clk enable failed\n");
-               return err;
-       }
-       err = devm_add_action_or_reset(dev, ls1x_clk_disable_unprepare,
-                                      drvdata->clk);
-       if (err)
-               return err;
-
        clk_rate = clk_get_rate(drvdata->clk);
        if (!clk_rate)
                return -EINVAL;