net: rfkill: Switch to PM ops

Use dev_pm_ops instead of the legacy suspend/resume callbacks for the
rfkill class suspend and resume operations.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

net/rfkill/core.c

@@ -794,7 +794,8 @@ void rfkill_resume_polling(struct rfkill *rfkill)
 }
 EXPORT_SYMBOL(rfkill_resume_polling);
 
-static int rfkill_suspend(struct device *dev, pm_message_t state)
+#ifdef CONFIG_PM_SLEEP
+static int rfkill_suspend(struct device *dev)
 {
 	struct rfkill *rfkill = to_rfkill(dev);
 
@@ -818,13 +819,18 @@ static int rfkill_resume(struct device *dev)
 	return 0;
 }
 
+static SIMPLE_DEV_PM_OPS(rfkill_pm_ops, rfkill_suspend, rfkill_resume);
+#define RFKILL_PM_OPS (&rfkill_pm_ops)
+#else
+#define RFKILL_PM_OPS NULL
+#endif
+
 static struct class rfkill_class = {
 	.name		= "rfkill",
 	.dev_release	= rfkill_release,
 	.dev_groups	= rfkill_dev_groups,
 	.dev_uevent	= rfkill_dev_uevent,
-	.suspend	= rfkill_suspend,
-	.resume		= rfkill_resume,
+	.pm		= RFKILL_PM_OPS,
 };
 
 bool rfkill_blocked(struct rfkill *rfkill)