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Subject[PATCH net-next 2/4] net: pxa168_eth: Do not clobber PHY link outside of state machine
Date
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>
---
drivers/net/ethernet/marvell/pxa168_eth.c | 20 +-------------------
1 file changed, 1 insertion(+), 19 deletions(-)

diff --git a/drivers/net/ethernet/marvell/pxa168_eth.c b/drivers/net/ethernet/marvell/pxa168_eth.c
index 3376a19f1e19..28cb36d9e50a 100644
--- 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,
};

--
2.9.3
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