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watchdog: visconti: Use devm_clk_get_enabled() helper

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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/13e8cdf17556da111d1d98a8fe0b1dc1c78007e2.1672417940.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 2022-12-30 17:32:42 +01:00 committed by Wim Van Sebroeck
parent a42912ac40
commit 8c5210dbdf
1 changed files with 1 additions and 16 deletions
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17
drivers/watchdog/visconti_wdt.c
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@ -112,11 +112,6 @@ static const struct watchdog_ops visconti_wdt_ops = {
.set_timeout = visconti_wdt_set_timeout,
};
static void visconti_clk_disable_unprepare(void *data)
{
clk_disable_unprepare(data);
}
static int visconti_wdt_probe(struct platform_device *pdev)
{
struct watchdog_device *wdev;
@ -134,20 +129,10 @@ static int visconti_wdt_probe(struct platform_device *pdev)
if (IS_ERR(priv->base))
return PTR_ERR(priv->base);
clk = devm_clk_get(dev, NULL);
clk = devm_clk_get_enabled(dev, NULL);
if (IS_ERR(clk))
return dev_err_probe(dev, PTR_ERR(clk), "Could not get clock\n");
ret = clk_prepare_enable(clk);
if (ret) {
dev_err(dev, "Could not enable clock\n");
return ret;
}
ret = devm_add_action_or_reset(dev, visconti_clk_disable_unprepare, clk);
if (ret)
return ret;
clk_freq = clk_get_rate(clk);
if (!clk_freq)
return -EINVAL;