net: hns: Fix loopback test failed at copper ports

[ Upstream commit 2e1f164861e500f4e068a9d909bbd3fcc7841483 ]

When doing a loopback test at copper ports, the serdes loopback
and the phy loopback will fail, because of the adjust link had
not finished, and phy not ready.

Adds sleep between adjust link and test process to fix it.

Signed-off-by: Yonglong Liu <liuyonglong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c b/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c
index 4b91eb70c683673cb5b3f4ae2d3ef12aeb7f4212..a2f2db58b5ab43647bf9588845e89c65420946bd 100644 (file)
--- a/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c
@@ -351,6 +351,7 @@ static int __lb_setup(struct net_device *ndev,
 static int __lb_up(struct net_device *ndev,
                   enum hnae_loop loop_mode)
 {
+#define NIC_LB_TEST_WAIT_PHY_LINK_TIME 300
        struct hns_nic_priv *priv = netdev_priv(ndev);
        struct hnae_handle *h = priv->ae_handle;
        int speed, duplex;
@@ -389,6 +390,9 @@ static int __lb_up(struct net_device *ndev,
 
        h->dev->ops->adjust_link(h, speed, duplex);
 
+       /* wait adjust link done and phy ready */
+       msleep(NIC_LB_TEST_WAIT_PHY_LINK_TIME);
+
        return 0;
 }