net: pxa168_eth: Do not clobber PHY link outside of state machine

Calling phy_read_status() means that we may call into
genphy_read_status() which in turn will use genphy_update_link() which
can make changes to phydev->link outside of the state machine's state
transitions. This is an invalid behavior that is now caught as of
811a919135b9 ("phy state machine: failsafe leave invalid RUNNING state")

Since we don't have anything special, switch to the generic
phy_ethtool_get_link_ksettings() function now.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/marvell/pxa168_eth.c b/drivers/net/ethernet/marvell/pxa168_eth.c
index 3376a19..28cb36d 100644 (file)
--- a/drivers/net/ethernet/marvell/pxa168_eth.c
+++ b/drivers/net/ethernet/marvell/pxa168_eth.c
@@ -274,8 +274,6 @@ enum hash_table_entry {
        HASH_ENTRY_RECEIVE_DISCARD_BIT = 2
 };
 
-static int pxa168_get_link_ksettings(struct net_device *dev,
-                                    struct ethtool_link_ksettings *cmd);
 static int pxa168_init_hw(struct pxa168_eth_private *pep);
 static int pxa168_init_phy(struct net_device *dev);
 static void eth_port_reset(struct net_device *dev);
@@ -987,10 +985,6 @@ static int pxa168_init_phy(struct net_device *dev)
        if (err)
                return err;
 
-       err = pxa168_get_link_ksettings(dev, &cmd);
-       if (err)
-               return err;
-
        cmd.base.phy_address = pep->phy_addr;
        cmd.base.speed = pep->phy_speed;
        cmd.base.duplex = pep->phy_duplex;
@@ -1370,18 +1364,6 @@ static int pxa168_eth_do_ioctl(struct net_device *dev, struct ifreq *ifr,
        return -EOPNOTSUPP;
 }
 
-static int pxa168_get_link_ksettings(struct net_device *dev,
-                                    struct ethtool_link_ksettings *cmd)
-{
-       int err;
-
-       err = phy_read_status(dev->phydev);
-       if (err == 0)
-               err = phy_ethtool_ksettings_get(dev->phydev, cmd);
-
-       return err;
-}
-
 static void pxa168_get_drvinfo(struct net_device *dev,
                               struct ethtool_drvinfo *info)
 {
@@ -1396,7 +1378,7 @@ static const struct ethtool_ops pxa168_ethtool_ops = {
        .nway_reset     = phy_ethtool_nway_reset,
        .get_link       = ethtool_op_get_link,
        .get_ts_info    = ethtool_op_get_ts_info,
-       .get_link_ksettings = pxa168_get_link_ksettings,
+       .get_link_ksettings = phy_ethtool_get_link_ksettings,
        .set_link_ksettings = phy_ethtool_set_link_ksettings,
 };