netdev - [PATCH] net: phy: fix marvell phy status reading

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Message-Id: <E1dFixz-00062r-0n@rmk-PC.armlinux.org.uk>
Date:   Tue, 30 May 2017 16:21:51 +0100
From:   Russell King <rmk+kernel@...linux.org.uk>
To:     Andrew Lunn <andrew@...n.ch>
Cc:     Florian Fainelli <f.fainelli@...il.com>, netdev@...r.kernel.org
Subject: [PATCH] net: phy: fix marvell phy status reading

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.

Signed-off-by: Russell King <rmk+kernel@...linux.org.uk>
---
 drivers/net/phy/marvell.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/net/phy/marvell.c b/drivers/net/phy/marvell.c
index e38f84291258..f93a7a46feb7 100644
--- a/drivers/net/phy/marvell.c
+++ b/drivers/net/phy/marvell.c
@@ -1119,8 +1119,6 @@ static int marvell_read_status_page(struct phy_device *phydev, int page)
 		if (adv < 0)
 			return adv;
 
-		lpa &= adv;
-
 		if (status & MII_M1011_PHY_STATUS_FULLDUPLEX)
 			phydev->duplex = DUPLEX_FULL;
 		else
-- 
2.7.4