linux-kernel - [PATCH 5.2 177/413] net: hns3: restore the MAC autoneg state after reset

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Message-Id: <20190724191747.544403271@linuxfoundation.org>
Date:   Wed, 24 Jul 2019 21:17:48 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Jian Shen <shenjian15@...wei.com>,
        Peng Li <lipeng321@...wei.com>,
        Huazhong Tan <tanhuazhong@...wei.com>,
        "David S. Miller" <davem@...emloft.net>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.2 177/413] net: hns3: restore the MAC autoneg state after reset

[ Upstream commit d736fc6c68a5f76e89a6c2c4100e3678706003a3 ]

When doing global reset, the MAC autoneg state of fibre
port is set to default, which may cause user configuration
lost. This patch fixes it by restore the MAC autoneg state
after reset.

Fixes: 22f48e24a23d ("net: hns3: add autoneg and change speed support for fibre port")
Signed-off-by: Jian Shen <shenjian15@...wei.com>
Signed-off-by: Peng Li <lipeng321@...wei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@...wei.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
index 4d9bcad26f06..645b9b3e0256 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
@@ -2389,6 +2389,15 @@ static int hclge_mac_init(struct hclge_dev *hdev)
 		return ret;
 	}
 
+	if (hdev->hw.mac.support_autoneg) {
+		ret = hclge_set_autoneg_en(hdev, hdev->hw.mac.autoneg);
+		if (ret) {
+			dev_err(&hdev->pdev->dev,
+				"Config mac autoneg fail ret=%d\n", ret);
+			return ret;
+		}
+	}
+
 	mac->link = 0;
 
 	if (mac->user_fec_mode & BIT(HNAE3_FEC_USER_DEF)) {
-- 
2.20.1