diff mbox series

watchdog: pnx4008: Use devm_clk_get_enabled() helper

Message ID 61f4e39db4c88408ee0149580e9aa925b784bc93.1672496714.git.christophe.jaillet@wanadoo.fr
State New
Headers
Series watchdog: pnx4008: Use devm_clk_get_enabled() helper |

Commit Message

Christophe JAILLET Dec. 31, 2022, 2:25 p.m. UTC 
  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/pnx4008_wdt.c | 15 +--------------
 1 file changed, 1 insertion(+), 14 deletions(-)

Comments

Guenter Roeck Jan. 3, 2023, 9:15 p.m. UTC | #1 
On Sat, Dec 31, 2022 at 03:25:31PM +0100, Christophe JAILLET wrote:
> 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>

> ---
>  drivers/watchdog/pnx4008_wdt.c | 15 +--------------
>  1 file changed, 1 insertion(+), 14 deletions(-)
> 
> diff --git a/drivers/watchdog/pnx4008_wdt.c b/drivers/watchdog/pnx4008_wdt.c
> index e0ea133c1690..87a44a5675a1 100644
> --- a/drivers/watchdog/pnx4008_wdt.c
> +++ b/drivers/watchdog/pnx4008_wdt.c
> @@ -179,11 +179,6 @@ static struct watchdog_device pnx4008_wdd = {
>  	.max_timeout = MAX_HEARTBEAT,
>  };
>  
> -static void pnx4008_clk_disable_unprepare(void *data)
> -{
> -	clk_disable_unprepare(data);
> -}
> -
>  static int pnx4008_wdt_probe(struct platform_device *pdev)
>  {
>  	struct device *dev = &pdev->dev;
> @@ -195,18 +190,10 @@ static int pnx4008_wdt_probe(struct platform_device *pdev)
>  	if (IS_ERR(wdt_base))
>  		return PTR_ERR(wdt_base);
>  
> -	wdt_clk = devm_clk_get(dev, NULL);
> +	wdt_clk = devm_clk_get_enabled(dev, NULL);
>  	if (IS_ERR(wdt_clk))
>  		return PTR_ERR(wdt_clk);
>  
> -	ret = clk_prepare_enable(wdt_clk);
> -	if (ret)
> -		return ret;
> -	ret = devm_add_action_or_reset(dev, pnx4008_clk_disable_unprepare,
> -				       wdt_clk);
> -	if (ret)
> -		return ret;
> -
>  	pnx4008_wdd.bootstatus = (readl(WDTIM_RES(wdt_base)) & WDOG_RESET) ?
>  			WDIOF_CARDRESET : 0;
>  	pnx4008_wdd.parent = dev;
> -- 
> 2.34.1
>
diff mbox series

Patch

diff --git a/drivers/watchdog/pnx4008_wdt.c b/drivers/watchdog/pnx4008_wdt.c
index e0ea133c1690..87a44a5675a1 100644
--- a/drivers/watchdog/pnx4008_wdt.c
+++ b/drivers/watchdog/pnx4008_wdt.c
@@ -179,11 +179,6 @@  static struct watchdog_device pnx4008_wdd = {
 	.max_timeout = MAX_HEARTBEAT,
 };
 
-static void pnx4008_clk_disable_unprepare(void *data)
-{
-	clk_disable_unprepare(data);
-}
-
 static int pnx4008_wdt_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
@@ -195,18 +190,10 @@  static int pnx4008_wdt_probe(struct platform_device *pdev)
 	if (IS_ERR(wdt_base))
 		return PTR_ERR(wdt_base);
 
-	wdt_clk = devm_clk_get(dev, NULL);
+	wdt_clk = devm_clk_get_enabled(dev, NULL);
 	if (IS_ERR(wdt_clk))
 		return PTR_ERR(wdt_clk);
 
-	ret = clk_prepare_enable(wdt_clk);
-	if (ret)
-		return ret;
-	ret = devm_add_action_or_reset(dev, pnx4008_clk_disable_unprepare,
-				       wdt_clk);
-	if (ret)
-		return ret;
-
 	pnx4008_wdd.bootstatus = (readl(WDTIM_RES(wdt_base)) & WDOG_RESET) ?
 			WDIOF_CARDRESET : 0;
 	pnx4008_wdd.parent = dev;