netdev - [PATCH net 2/2] r8169: fix network lost after resume on DASH systems

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Message-ID: <20231106151124.9175-3-hau@realtek.com>
Date: Mon, 6 Nov 2023 23:11:24 +0800
From: ChunHao Lin <hau@...ltek.com>
To: <hkallweit1@...il.com>
CC: <netdev@...r.kernel.org>, <nic_swsd@...ltek.com>,
        ChunHao Lin
	<hau@...ltek.com>
Subject: [PATCH net 2/2] 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.")
Signed-off-by: ChunHao Lin <hau@...ltek.com>
---
 drivers/net/ethernet/realtek/r8169_main.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/net/ethernet/realtek/r8169_main.c b/drivers/net/ethernet/realtek/r8169_main.c
index 8cbd7c96d9e1..cf32993992bc 100644
--- a/drivers/net/ethernet/realtek/r8169_main.c
+++ b/drivers/net/ethernet/realtek/r8169_main.c
@@ -4659,10 +4659,16 @@ 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);
-- 
2.39.2