diff options
| author | Mugunthan V N <mugunthanvnm@ti.com> | 2015-06-25 22:21:02 +0530 |
|---|---|---|
| committer | Sasha Levin <sasha.levin@oracle.com> | 2015-07-05 10:13:00 -0400 |
| commit | f5437d06e0894775086485c97b9069e123fe6961 (patch) | |
| tree | a727e6d7ad41a49f79dc8af4a81c0f6c3cfaf52c | |
| parent | 83152d40c1cf5db8b70e1d64b599b7b709063131 (diff) | |
net: phy: fix phy link up when limiting speed via device tree
[ Upstream commit eb686231fce3770299760f24fdcf5ad041f44153 ]
When limiting phy link speed using "max-speed" to 100mbps or less on a
giga bit phy, phy never completes auto negotiation and phy state
machine is held in PHY_AN. Fixing this issue by comparing the giga
bit advertise though phydev->supported doesn't have it but phy has
BMSR_ESTATEN set. So that auto negotiation is restarted as old and
new advertise are different and link comes up fine.
Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
| -rw-r--r-- | drivers/net/phy/phy_device.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c index 3fc91e89f5a5..70a0d88de654 100644 --- a/drivers/net/phy/phy_device.c +++ b/drivers/net/phy/phy_device.c @@ -782,10 +782,11 @@ static int genphy_config_advert(struct phy_device *phydev) if (phydev->supported & (SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full)) { adv |= ethtool_adv_to_mii_ctrl1000_t(advertise); - if (adv != oldadv) - changed = 1; } + if (adv != oldadv) + changed = 1; + err = phy_write(phydev, MII_CTRL1000, adv); if (err < 0) return err; |