r8169: fix network lost after resume on DASH systems

commit 868c3b95afef4883bfb66c9397482da6840b5baf upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/net/ethernet/realtek/r8169_main.c b/drivers/net/ethernet/realtek/r8169_main.c
index d14706265d9cb62d7f75bc08b305882de6793287..0f584481f5e0075e96c7ca204741d6e82416aaaa 100644 (file)
--- a/drivers/net/ethernet/realtek/r8169_main.c
+++ b/drivers/net/ethernet/realtek/r8169_main.c
@@ -4613,10 +4613,16 @@ 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);