net: hns3: synchronize speed and duplex from phy when phy link up

BugLink: https://bugs.launchpad.net/bugs/1810457
Driver calls phy_connect_direct and registers hclge_mac_adjust_link
to synchronize mac speed and duplex from phy. It is better to
synchronize mac speed and duplex from phy when phy link up.

Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit 0ad5ea5dbd6cb1e62bac547db5e61bab15af4f44)
Signed-off-by: dann frazier <dann.frazier@canonical.com>
Acked-by: Stefan Bader <stefan.bader@canonical.com>
Acked-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>
Signed-off-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mdio.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mdio.c
index 53efb3fda195ff5e4b8bd2ad29c5be76355717f1..efeb88de7eba4d1c640fff4af10d1a4ddecdec9d 100644 (file)
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mdio.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mdio.c
@@ -181,6 +181,10 @@ static void hclge_mac_adjust_link(struct net_device *netdev)
        int duplex, speed;
        int ret;
 
+       /* When phy link down, do nothing */
+       if (netdev->phydev->link == 0)
+               return;
+
        speed = netdev->phydev->speed;
        duplex = netdev->phydev->duplex;