From ba14ed8e6617212f09a8ab8bd180c6b00f630086 Mon Sep 17 00:00:00 2001 From: Yonglong Liu Date: Sat, 26 Jan 2019 17:18:26 +0800 Subject: [PATCH] net: hns: Restart autoneg need return failed when autoneg off BugLink: https://bugs.launchpad.net/bugs/1833147 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 Signed-off-by: Peng Li Signed-off-by: David S. Miller (cherry picked from commit ed29ca8b9592562559c64d027fb5eb126e463e2c) Signed-off-by: dann frazier Acked-by: Stefan Bader Acked-by: Marcelo Henrique Cerri Signed-off-by: Kleber Sacilotto de Souza --- 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 774beda040a1..e2710ff48fb0 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 -- 2.39.2