| Message ID | 20220628193449.160585-7-paul@crapouillou.net |
|---|---|
| State | New |
| Headers | show |
| Series | watchdog: Remove #ifdef guards for PM related functions | expand |
On Tue, Jun 28, 2022 at 08:34:47PM +0100, Paul Cercueil wrote: > Use the new DEFINE_SIMPLE_DEV_PM_OPS() and pm_sleep_ptr() macros to > handle the .suspend/.resume callbacks. > > These macros allow 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> > Cc: Patrice Chotard <patrice.chotard@foss.st.com> > Cc: linux-arm-kernel@lists.infradead.org Reviewed-by: Guenter Roeck <linux@roeck-us.net> > --- > drivers/watchdog/st_lpc_wdt.c | 9 +++------ > 1 file changed, 3 insertions(+), 6 deletions(-) > > diff --git a/drivers/watchdog/st_lpc_wdt.c b/drivers/watchdog/st_lpc_wdt.c > index 14ab6559c748..39abecdb9dd1 100644 > --- a/drivers/watchdog/st_lpc_wdt.c > +++ b/drivers/watchdog/st_lpc_wdt.c > @@ -248,7 +248,6 @@ static int st_wdog_remove(struct platform_device *pdev) > return 0; > } > > -#ifdef CONFIG_PM_SLEEP > static int st_wdog_suspend(struct device *dev) > { > struct st_wdog *st_wdog = watchdog_get_drvdata(&st_wdog_dev); > @@ -285,16 +284,14 @@ static int st_wdog_resume(struct device *dev) > > return 0; > } > -#endif > > -static SIMPLE_DEV_PM_OPS(st_wdog_pm_ops, > - st_wdog_suspend, > - st_wdog_resume); > +static DEFINE_SIMPLE_DEV_PM_OPS(st_wdog_pm_ops, > + st_wdog_suspend, st_wdog_resume); > > static struct platform_driver st_wdog_driver = { > .driver = { > .name = "st-lpc-wdt", > - .pm = &st_wdog_pm_ops, > + .pm = pm_sleep_ptr(&st_wdog_pm_ops), > .of_match_table = st_wdog_match, > }, > .probe = st_wdog_probe, > -- > 2.35.1 >
diff --git a/drivers/watchdog/st_lpc_wdt.c b/drivers/watchdog/st_lpc_wdt.c index 14ab6559c748..39abecdb9dd1 100644 --- a/drivers/watchdog/st_lpc_wdt.c +++ b/drivers/watchdog/st_lpc_wdt.c @@ -248,7 +248,6 @@ static int st_wdog_remove(struct platform_device *pdev) return 0; } -#ifdef CONFIG_PM_SLEEP static int st_wdog_suspend(struct device *dev) { struct st_wdog *st_wdog = watchdog_get_drvdata(&st_wdog_dev); @@ -285,16 +284,14 @@ static int st_wdog_resume(struct device *dev) return 0; } -#endif -static SIMPLE_DEV_PM_OPS(st_wdog_pm_ops, - st_wdog_suspend, - st_wdog_resume); +static DEFINE_SIMPLE_DEV_PM_OPS(st_wdog_pm_ops, + st_wdog_suspend, st_wdog_resume); static struct platform_driver st_wdog_driver = { .driver = { .name = "st-lpc-wdt", - .pm = &st_wdog_pm_ops, + .pm = pm_sleep_ptr(&st_wdog_pm_ops), .of_match_table = st_wdog_match, }, .probe = st_wdog_probe,
Use the new DEFINE_SIMPLE_DEV_PM_OPS() and pm_sleep_ptr() macros to handle the .suspend/.resume callbacks. These macros allow 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> Cc: Patrice Chotard <patrice.chotard@foss.st.com> Cc: linux-arm-kernel@lists.infradead.org --- drivers/watchdog/st_lpc_wdt.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-)