diff options
| author |   Heiner Kallweit <hkallweit1@gmail.com> | 2019-04-02 20:43:30 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2019-04-03 21:47:54 -0700 |
| commit | 4950c2ba49cc6f2b38dbedcfa0ff67acf761419a (patch) | |
| tree | e1bea0ceb1887369c734f6a48b5bbbc2a916ff81 | |
| parent | Merge branch 'marvel10g-suspend-resume' (diff) | |
| download | linux-dev-4950c2ba49cc6f2b38dbedcfa0ff67acf761419a.tar.xz linux-dev-4950c2ba49cc6f2b38dbedcfa0ff67acf761419a.zip | |
net: phy: fix autoneg mismatch case in genphy_read_status
The original patch didn't consider the case that autoneg process
finishes successfully but both link partners have no mode in common.
In this case there's no link, nevertheless we may be interested in
what the link partner advertised.
Like phydev->link we set phydev->autoneg_complete in
genphy_update_link() and use the stored value in genphy_read_status().
This way we don't have to read register BMSR again.
Fixes: b6163f194c69 ("net: phy: improve genphy_read_status")
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/phy/phy_device.c | 8 | ||||
| -rw-r--r-- | include/linux/phy.h | 1 |
2 files changed, 4 insertions, 5 deletions
diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c index 67fc581e3598..72fc714c9427 100644 --- a/drivers/net/phy/phy_device.c +++ b/drivers/net/phy/phy_device.c @@ -1723,10 +1723,8 @@ int genphy_update_link(struct phy_device *phydev) if (status < 0) return status; - if ((status & BMSR_LSTATUS) == 0) - phydev->link = 0; - else - phydev->link = 1; + phydev->link = status & BMSR_LSTATUS ? 1 : 0; + phydev->autoneg_complete = status & BMSR_ANEGCOMPLETE ? 1 : 0; return 0; } @@ -1757,7 +1755,7 @@ int genphy_read_status(struct phy_device *phydev) linkmode_zero(phydev->lp_advertising); - if (phydev->autoneg == AUTONEG_ENABLE && phydev->link) { + 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, diff --git a/include/linux/phy.h b/include/linux/phy.h index ad88f063e50f..ab7439b3da2b 100644 --- a/include/linux/phy.h +++ b/include/linux/phy.h @@ -390,6 +390,7 @@ struct phy_device { unsigned autoneg:1; /* The most recently read link state */ unsigned link:1; + unsigned autoneg_complete:1; /* Interrupts are enabled */ unsigned interrupts:1; |