From: Guangbin Huang huangguangbin2@huawei.com

If phy uses generic driver and autoneg is on, enter command "ethtool -s eth0 speed 50" will not change phy speed actually, but command "ethtool eth0" shows speed is 50Mb/s because phydev->speed has been set to 50 and no update later.

And duplex setting has same problem too.

However, if autoneg is on, phy only changes speed and duplex according to phydev->advertising, but not phydev->speed and phydev->duplex. So in this case, phydev->speed and phydev->duplex don't need to be set in function phy_ethtool_ksettings_set() if autoneg is on.

Fixes: 51e2a3846eab ("PHY: Avoid unnecessary aneg restarts") Signed-off-by: Guangbin Huang huangguangbin2@huawei.com Signed-off-by: Huazhong Tan tanhuazhong@huawei.com --- V1->V2: add a Fixes tag --- drivers/net/phy/phy.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c index 1be07e4..fc2e7cb 100644 --- a/drivers/net/phy/phy.c +++ b/drivers/net/phy/phy.c @@ -276,14 +276,16 @@ int phy_ethtool_ksettings_set(struct phy_device *phydev,

phydev->autoneg = autoneg;

- phydev->speed = speed; + if (autoneg == AUTONEG_DISABLE) { + phydev->speed = speed; + phydev->duplex = duplex; + }

linkmode_copy(phydev->advertising, advertising);

linkmode_mod_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, phydev->advertising, autoneg == AUTONEG_ENABLE);

- phydev->duplex = duplex; phydev->master_slave_set = cmd->base.master_slave_cfg; phydev->mdix_ctrl = cmd->base.eth_tp_mdix_ctrl;