net: hns: Fix loopback test failed at copper ports

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>

diff --git a/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c b/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c
index ce15d2350db948ec91c199153170715edb10674a..188c3f6791b52cee6f118daa498b545f672d563c 100644 (file)
--- a/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c
@@ -339,6 +339,7 @@ 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;
@@ -365,6 +366,9 @@ 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;
 }