diff options
| author |   Heiner Kallweit <hkallweit1@gmail.com> | 2019-04-05 21:23:13 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2019-04-08 15:18:00 -0700 |
| commit | 3b8b11f96616c2e763ebcc093b778b309fc07a92 (patch) | |
| tree | 40d5b903637dd7da005a08448c67a83df4379ef9 /drivers/net/phy/phy_device.c | |
| parent | Merge tag 'mlx5-updates-2019-04-02' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux (diff) | |
| download | linux-dev-3b8b11f96616c2e763ebcc093b778b309fc07a92.tar.xz linux-dev-3b8b11f96616c2e763ebcc093b778b309fc07a92.zip | |
net: phy: improve link partner capability detection
genphy_read_status() so far checks phydev->supported, not the actual
PHY capabilities. This can make a difference if the supported speeds
have been limited by of_set_phy_supported() or phy_set_max_speed().
It seems that this issue only affects the link partner advertisements
as displayed by ethtool. Also this patch wouldn't apply to older
kernels because linkmode bitmaps have been introduced recently.
Therefore net-next.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/phy/phy_device.c')
| -rw-r--r-- | drivers/net/phy/phy_device.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c index f7a6d0ffb1ac..dab3ecbb452d 100644 --- a/drivers/net/phy/phy_device.c +++ b/drivers/net/phy/phy_device.c @@ -1756,10 +1756,7 @@ int genphy_read_status(struct phy_device *phydev) linkmode_zero(phydev->lp_advertising); if (phydev->autoneg == AUTONEG_ENABLE && phydev->autoneg_complete) { - if (linkmode_test_bit(ETHTOOL_LINK_MODE_1000baseT_Half_BIT, - phydev->supported) || - linkmode_test_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT, - phydev->supported)) { + if (phydev->is_gigabit_capable) { lpagb = phy_read(phydev, MII_STAT1000); if (lpagb < 0) return lpagb; @@ -2154,6 +2151,13 @@ static int phy_probe(struct device *dev) if (err) goto out; + if (linkmode_test_bit(ETHTOOL_LINK_MODE_1000baseT_Half_BIT, + phydev->supported)) + phydev->is_gigabit_capable = 1; + if (linkmode_test_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT, + phydev->supported)) + phydev->is_gigabit_capable = 1; + of_set_phy_supported(phydev); linkmode_copy(phydev->advertising, phydev->supported); |