r8169: fix network lost after resume on DASH systems

Device that support DASH may be reseted or powered off during suspend.
So driver needs to handle DASH during system suspend and resume. Or
DASH firmware will influence device behavior and causes network lost.

Fixes: b646d90053f8 ("r8169: magic.")
Cc: stable@vger.kernel.org
Reviewed-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: ChunHao Lin <hau@realtek.com>
Link: https://lore.kernel.org/r/20231109173400.4573-3-hau@realtek.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ethernet/realtek/r8169_main.c b/drivers/net/ethernet/realtek/r8169_main.c
index cfcb40d..b9bb1d2 100644 (file)
--- a/drivers/net/ethernet/realtek/r8169_main.c
+++ b/drivers/net/ethernet/realtek/r8169_main.c
@@ -4661,10 +4661,16 @@ static void rtl8169_down(struct rtl8169_private *tp)
        rtl8169_cleanup(tp);
        rtl_disable_exit_l1(tp);
        rtl_prepare_power_down(tp);
+
+       if (tp->dash_type != RTL_DASH_NONE)
+               rtl8168_driver_stop(tp);
 }
 
 static void rtl8169_up(struct rtl8169_private *tp)
 {
+       if (tp->dash_type != RTL_DASH_NONE)
+               rtl8168_driver_start(tp);
+
        pci_set_master(tp->pci_dev);
        phy_init_hw(tp->phydev);
        phy_resume(tp->phydev);