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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>
This commit is contained in:
Christophe JAILLET 2022-12-31 12:14:30 +01:00 committed by Wim Van Sebroeck
parent 8fd15ace76
commit 07d41160b3
1 changed files with 1 additions and 16 deletions
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17
drivers/watchdog/loongson1_wdt.c
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@ -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;