mfd: sm501: Remove #ifdef guards for PM related functions

Use the new pm_sleep_ptr() macro to handle the .suspend/.resume
callbacks.

This macro allow the suspend and resume functions to be automatically
dropped by the compiler when CONFIG_SUSPEND is disabled, without having
to use #ifdef guards.

This has the advantage of always compiling these functions in,
independently of any Kconfig option. Thanks to that, bugs and other
regressions are subsequently easier to catch.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Lee Jones <lee@kernel.org>

drivers/mfd/sm501.c

@@ -1432,8 +1432,6 @@ static int sm501_plat_probe(struct platform_device *dev)
 
 }
 
-#ifdef CONFIG_PM
-
 /* power management support */
 
 static void sm501_set_power(struct sm501_devdata *sm, int on)
@@ -1509,10 +1507,6 @@ static int sm501_plat_resume(struct platform_device *pdev)
 
 	return 0;
 }
-#else
-#define sm501_plat_suspend NULL
-#define sm501_plat_resume NULL
-#endif
 
 /* Initialisation data for PCI devices */
 
@@ -1714,8 +1708,8 @@ static struct platform_driver sm501_plat_driver = {
 	},
 	.probe		= sm501_plat_probe,
 	.remove		= sm501_plat_remove,
-	.suspend	= sm501_plat_suspend,
-	.resume		= sm501_plat_resume,
+	.suspend	= pm_sleep_ptr(sm501_plat_suspend),
+	.resume		= pm_sleep_ptr(sm501_plat_resume),
 };
 
 static int __init sm501_base_init(void)