| Message ID | 20221020185047.1001522-3-paul@crapouillou.net |
|---|---|
| State | New |
| Headers | show |
| Series | watchdog: Remove #ifdef guards for PM functions | expand |
On Thu, Oct 20, 2022 at 07:50:45PM +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/twl4030_wdt.c | 9 ++------- > 1 file changed, 2 insertions(+), 7 deletions(-) > > diff --git a/drivers/watchdog/twl4030_wdt.c b/drivers/watchdog/twl4030_wdt.c > index 36b4a660928d..09d17e20f4a7 100644 > --- a/drivers/watchdog/twl4030_wdt.c > +++ b/drivers/watchdog/twl4030_wdt.c > @@ -81,7 +81,6 @@ static int twl4030_wdt_probe(struct platform_device *pdev) > return devm_watchdog_register_device(dev, wdt); > } > > -#ifdef CONFIG_PM > static int twl4030_wdt_suspend(struct platform_device *pdev, pm_message_t state) > { > struct watchdog_device *wdt = platform_get_drvdata(pdev); > @@ -99,10 +98,6 @@ static int twl4030_wdt_resume(struct platform_device *pdev) > > return 0; > } > -#else > -#define twl4030_wdt_suspend NULL > -#define twl4030_wdt_resume NULL > -#endif > > static const struct of_device_id twl_wdt_of_match[] = { > { .compatible = "ti,twl4030-wdt", }, > @@ -112,8 +107,8 @@ MODULE_DEVICE_TABLE(of, twl_wdt_of_match); > > static struct platform_driver twl4030_wdt_driver = { > .probe = twl4030_wdt_probe, > - .suspend = twl4030_wdt_suspend, > - .resume = twl4030_wdt_resume, > + .suspend = pm_ptr(twl4030_wdt_suspend), > + .resume = pm_ptr(twl4030_wdt_resume), > .driver = { > .name = "twl4030_wdt", > .of_match_table = twl_wdt_of_match, > -- > 2.35.1 >
diff --git a/drivers/watchdog/twl4030_wdt.c b/drivers/watchdog/twl4030_wdt.c index 36b4a660928d..09d17e20f4a7 100644 --- a/drivers/watchdog/twl4030_wdt.c +++ b/drivers/watchdog/twl4030_wdt.c @@ -81,7 +81,6 @@ static int twl4030_wdt_probe(struct platform_device *pdev) return devm_watchdog_register_device(dev, wdt); } -#ifdef CONFIG_PM static int twl4030_wdt_suspend(struct platform_device *pdev, pm_message_t state) { struct watchdog_device *wdt = platform_get_drvdata(pdev); @@ -99,10 +98,6 @@ static int twl4030_wdt_resume(struct platform_device *pdev) return 0; } -#else -#define twl4030_wdt_suspend NULL -#define twl4030_wdt_resume NULL -#endif static const struct of_device_id twl_wdt_of_match[] = { { .compatible = "ti,twl4030-wdt", }, @@ -112,8 +107,8 @@ MODULE_DEVICE_TABLE(of, twl_wdt_of_match); static struct platform_driver twl4030_wdt_driver = { .probe = twl4030_wdt_probe, - .suspend = twl4030_wdt_suspend, - .resume = twl4030_wdt_resume, + .suspend = pm_ptr(twl4030_wdt_suspend), + .resume = pm_ptr(twl4030_wdt_resume), .driver = { .name = "twl4030_wdt", .of_match_table = twl_wdt_of_match,
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/twl4030_wdt.c | 9 ++------- 1 file changed, 2 insertions(+), 7 deletions(-)