mfd: tc3589x: Remove #ifdef guards for PM related functions

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.

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/tc3589x.c

@@ -436,7 +436,6 @@ static void tc3589x_remove(struct i2c_client *client)
 	mfd_remove_devices(tc3589x->dev);
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int tc3589x_suspend(struct device *dev)
 {
 	struct tc3589x *tc3589x = dev_get_drvdata(dev);
@@ -464,9 +463,9 @@ static int tc3589x_resume(struct device *dev)
 
 	return ret;
 }
-#endif
 
-static SIMPLE_DEV_PM_OPS(tc3589x_dev_pm_ops, tc3589x_suspend, tc3589x_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(tc3589x_dev_pm_ops,
+				tc3589x_suspend, tc3589x_resume);
 
 static const struct i2c_device_id tc3589x_id[] = {
 	{ "tc35890", TC3589X_TC35890 },
@@ -483,7 +482,7 @@ MODULE_DEVICE_TABLE(i2c, tc3589x_id);
 static struct i2c_driver tc3589x_driver = {
 	.driver = {
 		.name	= "tc3589x",
-		.pm	= &tc3589x_dev_pm_ops,
+		.pm	= pm_sleep_ptr(&tc3589x_dev_pm_ops),
 		.of_match_table = of_match_ptr(tc3589x_match),
 	},
 	.probe_new	= tc3589x_probe,