watchdog: at91rm9200: Remove #ifdef guards for PM related functions

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>
Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/r/20221020185047.1001522-2-paul@crapouillou.net
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>

diff --git a/drivers/watchdog/at91rm9200_wdt.c b/drivers/watchdog/at91rm9200_wdt.c
index 6d751eb..5126454 100644 (file)
--- a/drivers/watchdog/at91rm9200_wdt.c
+++ b/drivers/watchdog/at91rm9200_wdt.c
@@ -278,8 +278,6 @@ static void at91wdt_shutdown(struct platform_device *pdev)
        at91_wdt_stop();
 }
 
-#ifdef CONFIG_PM
-
 static int at91wdt_suspend(struct platform_device *pdev, pm_message_t message)
 {
        at91_wdt_stop();
@@ -293,11 +291,6 @@ static int at91wdt_resume(struct platform_device *pdev)
        return 0;
 }
 
-#else
-#define at91wdt_suspend NULL
-#define at91wdt_resume NULL
-#endif
-
 static const struct of_device_id at91_wdt_dt_ids[] = {
        { .compatible = "atmel,at91rm9200-wdt" },
        { /* sentinel */ }
@@ -308,8 +301,8 @@ static struct platform_driver at91wdt_driver = {
        .probe          = at91wdt_probe,
        .remove         = at91wdt_remove,
        .shutdown       = at91wdt_shutdown,
-       .suspend        = at91wdt_suspend,
-       .resume         = at91wdt_resume,
+       .suspend        = pm_ptr(at91wdt_suspend),
+       .resume         = pm_ptr(at91wdt_resume),
        .driver         = {
                .name   = "atmel_st_watchdog",
                .of_match_table = at91_wdt_dt_ids,

diff --git a/drivers/watchdog/db8500_wdt.c b/drivers/watchdog/db8500_wdt.c
index 6ed8b63..97148ac 100644 (file)
--- a/drivers/watchdog/db8500_wdt.c
+++ b/drivers/watchdog/db8500_wdt.c
@@ -105,7 +105,6 @@ static int db8500_wdt_probe(struct platform_device *pdev)
        return 0;
 }
 
-#ifdef CONFIG_PM
 static int db8500_wdt_suspend(struct platform_device *pdev,
                             pm_message_t state)
 {
@@ -130,15 +129,11 @@ static int db8500_wdt_resume(struct platform_device *pdev)
        }
        return 0;
 }
-#else
-#define db8500_wdt_suspend NULL
-#define db8500_wdt_resume NULL
-#endif
 
 static struct platform_driver db8500_wdt_driver = {
        .probe          = db8500_wdt_probe,
-       .suspend        = db8500_wdt_suspend,
-       .resume         = db8500_wdt_resume,
+       .suspend        = pm_ptr(db8500_wdt_suspend),
+       .resume         = pm_ptr(db8500_wdt_resume),
        .driver         = {
                .name   = "db8500_wdt",
        },