r8169: use new PM macros

This is based on series [0] that extended the PM core. Now the compiler
can see the PM callbacks also on systems not defining CONFIG_PM.
The optimizer will remove the functions then in this case.

[0] https://lore.kernel.org/netdev/20211207002102.26414-1-paul@crapouillou.net/Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/realtek/r8169_main.c

@@ -4843,8 +4843,6 @@ static void rtl8169_net_suspend(struct rtl8169_private *tp)
 		rtl8169_down(tp);
 }
 
-#ifdef CONFIG_PM
-
 static int rtl8169_runtime_resume(struct device *dev)
 {
 	struct rtl8169_private *tp = dev_get_drvdata(dev);
@@ -4860,7 +4858,7 @@ static int rtl8169_runtime_resume(struct device *dev)
 	return 0;
 }
 
-static int __maybe_unused rtl8169_suspend(struct device *device)
+static int rtl8169_suspend(struct device *device)
 {
 	struct rtl8169_private *tp = dev_get_drvdata(device);
 
@@ -4873,7 +4871,7 @@ static int __maybe_unused rtl8169_suspend(struct device *device)
 	return 0;
 }
 
-static int __maybe_unused rtl8169_resume(struct device *device)
+static int rtl8169_resume(struct device *device)
 {
 	struct rtl8169_private *tp = dev_get_drvdata(device);
 
@@ -4915,13 +4913,11 @@ static int rtl8169_runtime_idle(struct device *device)
 }
 
 static const struct dev_pm_ops rtl8169_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(rtl8169_suspend, rtl8169_resume)
-	SET_RUNTIME_PM_OPS(rtl8169_runtime_suspend, rtl8169_runtime_resume,
-			   rtl8169_runtime_idle)
+	SYSTEM_SLEEP_PM_OPS(rtl8169_suspend, rtl8169_resume)
+	RUNTIME_PM_OPS(rtl8169_runtime_suspend, rtl8169_runtime_resume,
+		       rtl8169_runtime_idle)
 };
 
-#endif /* CONFIG_PM */
-
 static void rtl_wol_shutdown_quirk(struct rtl8169_private *tp)
 {
 	/* WoL fails with 8168b when the receiver is disabled. */
@@ -5460,9 +5456,7 @@ static struct pci_driver rtl8169_pci_driver = {
 	.probe		= rtl_init_one,
 	.remove		= rtl_remove_one,
 	.shutdown	= rtl_shutdown,
-#ifdef CONFIG_PM
-	.driver.pm	= &rtl8169_pm_ops,
-#endif
+	.driver.pm	= pm_ptr(&rtl8169_pm_ops),
 };
 
 module_pci_driver(rtl8169_pci_driver);