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net: phy: Invalidate LP advertising flags when restarting or disabling AN

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It is possible to see the old value of the LP advertising flags
through ethtool after reconfiguring the PHY and before autonegotiation
completes.  If autonegotiation is turned off then the last value seen
will persist indefinitely.

Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ben Hutchings 2015-01-27 00:58:15 +00:00 committed by David S. Miller
parent 28f323b3bc
commit 9b3320ef70
1 changed files with 3 additions and 0 deletions
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3
drivers/net/phy/phy.c
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@ -439,6 +439,9 @@ int phy_start_aneg(struct phy_device *phydev)
if (AUTONEG_DISABLE == phydev->autoneg)
phy_sanitize_settings(phydev);
/* Invalidate LP advertising flags */
phydev->lp_advertising = 0;
err = phydev->drv->config_aneg(phydev);
if (err < 0)
goto out_unlock;