[PATCH net-next] r8169: use pci_prepare_to_sleep in rtl_shutdown

[Heiner Kallweit <hkallweit1@gmail.com>]

Use pci_prepare_to_sleep() like PCI core does in pci_pm_suspend_noirq.
This aligns setting a low-power mode during shutdown with the handling
of the transition to system suspend. Also the transition to runtime
suspend uses pci_target_state() instead of setting D3hot unconditionally.

Note: pci_prepare_to_sleep() uses device_may_wakeup() to check whether
      device may generate wakeup events. So we don't lose anything by
      not passing tp->saved_wolopts any longer.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
---
 drivers/net/ethernet/realtek/r8169_main.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/realtek/r8169_main.c b/drivers/net/ethernet/realtek/r8169_main.c
index b2c48d013..64e30408a 100644
--- a/drivers/net/ethernet/realtek/r8169_main.c
+++ b/drivers/net/ethernet/realtek/r8169_main.c
@@ -5028,10 +5028,8 @@ static void rtl_shutdown(struct pci_dev *pdev)
 	/* Restore original MAC address */
 	rtl_rar_set(tp, tp->dev->perm_addr);
 
-	if (system_state == SYSTEM_POWER_OFF && !tp->dash_enabled) {
-		pci_wake_from_d3(pdev, tp->saved_wolopts);
-		pci_set_power_state(pdev, PCI_D3hot);
-	}
+	if (system_state == SYSTEM_POWER_OFF && !tp->dash_enabled)
+		pci_prepare_to_sleep(pdev);
 }
 
 static void rtl_remove_one(struct pci_dev *pdev)
-- 
2.49.0