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Subject[PATCH] watchdog: visconti: Use devm_clk_get_enabled() helper
Date
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>
---
drivers/watchdog/visconti_wdt.c | 17 +----------------
1 file changed, 1 insertion(+), 16 deletions(-)

diff --git a/drivers/watchdog/visconti_wdt.c b/drivers/watchdog/visconti_wdt.c
index 83ef55e66ca8..cef0794708e7 100644
--- a/drivers/watchdog/visconti_wdt.c
+++ b/drivers/watchdog/visconti_wdt.c
@@ -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;
--
2.34.1
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