watchdog: twl4030: 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>
Link: https://lore.kernel.org/r/20221020185047.1001522-3-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/twl4030_wdt.c b/drivers/watchdog/twl4030_wdt.c
index 36b4a66..09d17e2 100644 (file)
--- 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,