pwm: sysfs: Switch to DEFINE_SIMPLE_DEV_PM_OPS() and pm_sleep_ptr()

Using these newer macros allows the compiler to remove the unused
structure and functions when !CONFIG_PM_SLEEP + removes the need to
mark pm functions __maybe_unused.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>

drivers/pwm/sysfs.c

@@ -433,7 +433,7 @@ static int pwm_class_resume_npwm(struct device *parent, unsigned int npwm)
 	return ret;
 }
 
-static int __maybe_unused pwm_class_suspend(struct device *parent)
+static int pwm_class_suspend(struct device *parent)
 {
 	struct pwm_chip *chip = dev_get_drvdata(parent);
 	unsigned int i;
@@ -464,20 +464,20 @@ static int __maybe_unused pwm_class_suspend(struct device *parent)
 	return ret;
 }
 
-static int __maybe_unused pwm_class_resume(struct device *parent)
+static int pwm_class_resume(struct device *parent)
 {
 	struct pwm_chip *chip = dev_get_drvdata(parent);
 
 	return pwm_class_resume_npwm(parent, chip->npwm);
 }
 
-static SIMPLE_DEV_PM_OPS(pwm_class_pm_ops, pwm_class_suspend, pwm_class_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(pwm_class_pm_ops, pwm_class_suspend, pwm_class_resume);
 
 static struct class pwm_class = {
 	.name = "pwm",
 	.owner = THIS_MODULE,
 	.dev_groups = pwm_chip_groups,
-	.pm = &pwm_class_pm_ops,
+	.pm = pm_sleep_ptr(&pwm_class_pm_ops),
 };
 
 static int pwmchip_sysfs_match(struct device *parent, const void *data)