diff mbox series

[4/4] watchdog: kempld: Remove #ifdef guards for PM related functions

Message ID 20221020185047.1001522-5-paul@crapouillou.net (mailing list archive)
State Accepted
Headers show
Series watchdog: Remove #ifdef guards for PM functions | expand

Commit Message

Paul Cercueil Oct. 20, 2022, 6:50 p.m. UTC
Use the pm_ptr() macro to handle the .suspend/.resume callbacks.

This macro allows the suspend and resume functions to be automatically
dropped by the compiler when CONFIG_SUSPEND is disabled, without having
to use #ifdef guards. Not using #ifdef guards means that the code is
always compiled independently of any Kconfig option, and thanks to that
bugs and regressions are easier to catch.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
---
 drivers/watchdog/kempld_wdt.c | 11 ++---------
 1 file changed, 2 insertions(+), 9 deletions(-)

Comments

Guenter Roeck Oct. 20, 2022, 10 p.m. UTC | #1
On Thu, Oct 20, 2022 at 07:50:47PM +0100, Paul Cercueil wrote:
> Use the pm_ptr() macro to handle the .suspend/.resume callbacks.
> 
> This macro allows the suspend and resume functions to be automatically
> dropped by the compiler when CONFIG_SUSPEND is disabled, without having
> to use #ifdef guards. Not using #ifdef guards means that the code is
> always compiled independently of any Kconfig option, and thanks to that
> bugs and regressions are easier to catch.
> 
> Signed-off-by: Paul Cercueil <paul@crapouillou.net>

Reviewed-by: Guenter Roeck <linux@roeck-us.net>

> ---
>  drivers/watchdog/kempld_wdt.c | 11 ++---------
>  1 file changed, 2 insertions(+), 9 deletions(-)
> 
> diff --git a/drivers/watchdog/kempld_wdt.c b/drivers/watchdog/kempld_wdt.c
> index 40bd518ed873..e6c7a2906680 100644
> --- a/drivers/watchdog/kempld_wdt.c
> +++ b/drivers/watchdog/kempld_wdt.c
> @@ -75,9 +75,7 @@ struct kempld_wdt_data {
>  	struct watchdog_device		wdd;
>  	unsigned int			pretimeout;
>  	struct kempld_wdt_stage		stage[KEMPLD_WDT_MAX_STAGES];
> -#ifdef CONFIG_PM
>  	u8				pm_status_store;
> -#endif
>  };
>  
>  #define DEFAULT_TIMEOUT		30 /* seconds */
> @@ -495,7 +493,6 @@ static int kempld_wdt_probe(struct platform_device *pdev)
>  	return 0;
>  }
>  
> -#ifdef CONFIG_PM
>  /* Disable watchdog if it is active during suspend */
>  static int kempld_wdt_suspend(struct platform_device *pdev,
>  				pm_message_t message)
> @@ -531,18 +528,14 @@ static int kempld_wdt_resume(struct platform_device *pdev)
>  	else
>  		return kempld_wdt_stop(wdd);
>  }
> -#else
> -#define kempld_wdt_suspend	NULL
> -#define kempld_wdt_resume	NULL
> -#endif
>  
>  static struct platform_driver kempld_wdt_driver = {
>  	.driver		= {
>  		.name	= "kempld-wdt",
>  	},
>  	.probe		= kempld_wdt_probe,
> -	.suspend	= kempld_wdt_suspend,
> -	.resume		= kempld_wdt_resume,
> +	.suspend	= pm_ptr(kempld_wdt_suspend),
> +	.resume		= pm_ptr(kempld_wdt_resume),
>  };
>  
>  module_platform_driver(kempld_wdt_driver);
> -- 
> 2.35.1
>
diff mbox series

Patch

diff --git a/drivers/watchdog/kempld_wdt.c b/drivers/watchdog/kempld_wdt.c
index 40bd518ed873..e6c7a2906680 100644
--- a/drivers/watchdog/kempld_wdt.c
+++ b/drivers/watchdog/kempld_wdt.c
@@ -75,9 +75,7 @@  struct kempld_wdt_data {
 	struct watchdog_device		wdd;
 	unsigned int			pretimeout;
 	struct kempld_wdt_stage		stage[KEMPLD_WDT_MAX_STAGES];
-#ifdef CONFIG_PM
 	u8				pm_status_store;
-#endif
 };
 
 #define DEFAULT_TIMEOUT		30 /* seconds */
@@ -495,7 +493,6 @@  static int kempld_wdt_probe(struct platform_device *pdev)
 	return 0;
 }
 
-#ifdef CONFIG_PM
 /* Disable watchdog if it is active during suspend */
 static int kempld_wdt_suspend(struct platform_device *pdev,
 				pm_message_t message)
@@ -531,18 +528,14 @@  static int kempld_wdt_resume(struct platform_device *pdev)
 	else
 		return kempld_wdt_stop(wdd);
 }
-#else
-#define kempld_wdt_suspend	NULL
-#define kempld_wdt_resume	NULL
-#endif
 
 static struct platform_driver kempld_wdt_driver = {
 	.driver		= {
 		.name	= "kempld-wdt",
 	},
 	.probe		= kempld_wdt_probe,
-	.suspend	= kempld_wdt_suspend,
-	.resume		= kempld_wdt_resume,
+	.suspend	= pm_ptr(kempld_wdt_suspend),
+	.resume		= pm_ptr(kempld_wdt_resume),
 };
 
 module_platform_driver(kempld_wdt_driver);