[PATCH 3.18 15/16] net: phy: fix marvell phy status reading

Greg Kroah-Hartman
2017-06-27T13:03:08Z

From: Russell King <rmk+kernel@armlinux.org.uk>

commit 898805e0cdf7fd860ec21bf661d3a0285a3defbd upstream.

The Marvell driver incorrectly provides phydev->lp_advertising as the
logical and of the link partner's advert and our advert. This is
incorrect - this field is supposed to store the link parter's unmodified
advertisment.

This allows ethtool to report the correct link partner auto-negotiation
status.

Fixes: be937f1f89ca ("Marvell PHY m88e1111 driver fix")
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/net/phy/marvell.c | 2 --
1 file changed, 2 deletions(-)

--- a/drivers/net/phy/marvell.c
+++ b/drivers/net/phy/marvell.c
@@ -737,8 +737,6 @@ static int marvell_read_status(struct ph
if (adv < 0)
return adv;

- lpa &= adv;
-
if (status & MII_M1011_PHY_STATUS_FULLDUPLEX)
phydev->duplex = DUPLEX_FULL;
else