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Subject[PATCH net-next 1/4] net: mv643xx_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")

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
---
drivers/net/ethernet/marvell/mv643xx_eth.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/marvell/mv643xx_eth.c b/drivers/net/ethernet/marvell/mv643xx_eth.c
index 20cb7f0de601..25642dee49d3 100644
--- a/drivers/net/ethernet/marvell/mv643xx_eth.c
+++ b/drivers/net/ethernet/marvell/mv643xx_eth.c
@@ -1504,9 +1504,7 @@ mv643xx_eth_get_link_ksettings_phy(struct mv643xx_eth_private *mp,
int err;
u32 supported, advertising;

- err = phy_read_status(dev->phydev);
- if (err == 0)
- err = phy_ethtool_ksettings_get(dev->phydev, cmd);
+ err = phy_ethtool_ksettings_get(dev->phydev, cmd);

/*
* The MAC does not support 1000baseT_Half.
--
2.9.3
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