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 0c76c162b8a9f5eb720ea3ed00a5beaf4d930ad0..ad9c54fef33f68569332fcd00c6a78f1fec6652d 100644 (file)
--- a/drivers/net/ethernet/realtek/r8169_main.c
+++ b/drivers/net/ethernet/realtek/r8169_main.c
@@ -4648,10 +4648,16 @@ 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);