[PATCH net 2/3] net: hns: Restart autoneg need return failed when autoneg off

[Peng Li]

From: Yonglong Liu <liuyongl...@huawei.com>

The hns driver of earlier devices, when autoneg off, restart autoneg
will return -EINVAL, so make the hns driver for the latest devices
do the same.

Signed-off-by: Yonglong Liu <liuyongl...@huawei.com>
Signed-off-by: Peng Li <lipeng...@huawei.com>
---
 drivers/net/ethernet/hisilicon/hns/hns_ethtool.c | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c 
b/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c
index 8e9b958..ce15d23 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c
@@ -1157,16 +1157,18 @@ static int hns_get_regs_len(struct net_device *net_dev)
  */
 static int hns_nic_nway_reset(struct net_device *netdev)
 {
-       int ret = 0;
        struct phy_device *phy = netdev->phydev;
 
-       if (netif_running(netdev)) {
-               /* if autoneg is disabled, don't restart auto-negotiation */
-               if (phy && phy->autoneg == AUTONEG_ENABLE)
-                       ret = genphy_restart_aneg(phy);
-       }
+       if (!netif_running(netdev))
+               return 0;
 
-       return ret;
+       if (!phy)
+               return -EOPNOTSUPP;
+
+       if (phy->autoneg != AUTONEG_ENABLE)
+               return -EINVAL;
+
+       return genphy_restart_aneg(phy);
 }
 
 static u32
-- 
1.9.1