net: phy: marvell: don't interpret PHY status unless resolved

Don't attempt to interpret the PHY specific status register unless
the PHY is indicating that the resolution is valid.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/phy/marvell.c b/drivers/net/phy/marvell.c
index 28e33ec..9a8bada 100644 (file)
--- a/drivers/net/phy/marvell.c
+++ b/drivers/net/phy/marvell.c
@@ -1306,6 +1306,9 @@ static int marvell_read_status_page_an(struct phy_device *phydev,
                }
        }
 
+       if (!(status & MII_M1011_PHY_STATUS_RESOLVED))
+               return 0;
+
        if (status & MII_M1011_PHY_STATUS_FULLDUPLEX)
                phydev->duplex = DUPLEX_FULL;
        else
@@ -1365,6 +1368,8 @@ static int marvell_read_status_page(struct phy_device *phydev, int page)
        linkmode_zero(phydev->lp_advertising);
        phydev->pause = 0;
        phydev->asym_pause = 0;
+       phydev->speed = SPEED_UNKNOWN;
+       phydev->duplex = DUPLEX_UNKNOWN;
 
        if (phydev->autoneg == AUTONEG_ENABLE)
                err = marvell_read_status_page_an(phydev, fiber, status);