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Subject[PATCH] watchdog: apple: 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/apple_wdt.c | 18 +-----------------
1 file changed, 1 insertion(+), 17 deletions(-)

diff --git a/drivers/watchdog/apple_wdt.c b/drivers/watchdog/apple_wdt.c
index 16aca21f13d6..eddeb0fede89 100644
--- a/drivers/watchdog/apple_wdt.c
+++ b/drivers/watchdog/apple_wdt.c
@@ -136,11 +136,6 @@ static int apple_wdt_restart(struct watchdog_device *wdd, unsigned long mode,
return 0;
}

-static void apple_wdt_clk_disable_unprepare(void *data)
-{
- clk_disable_unprepare(data);
-}
-
static struct watchdog_ops apple_wdt_ops = {
.owner = THIS_MODULE,
.start = apple_wdt_start,
@@ -162,7 +157,6 @@ static int apple_wdt_probe(struct platform_device *pdev)
struct apple_wdt *wdt;
struct clk *clk;
u32 wdt_ctrl;
- int ret;

wdt = devm_kzalloc(dev, sizeof(*wdt), GFP_KERNEL);
if (!wdt)
@@ -172,19 +166,9 @@ static int apple_wdt_probe(struct platform_device *pdev)
if (IS_ERR(wdt->regs))
return PTR_ERR(wdt->regs);

- clk = devm_clk_get(dev, NULL);
+ clk = devm_clk_get_enabled(dev, NULL);
if (IS_ERR(clk))
return PTR_ERR(clk);
-
- ret = clk_prepare_enable(clk);
- if (ret)
- return ret;
-
- ret = devm_add_action_or_reset(dev, apple_wdt_clk_disable_unprepare,
- clk);
- if (ret)
- return ret;
-
wdt->clk_rate = clk_get_rate(clk);
if (!wdt->clk_rate)
return -EINVAL;
--
2.34.1
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