linux-kernel - [PATCH 5.6 35/49] net: phy: bcm84881: clear settings on link down

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Message-Id: <20200508123048.022211521@linuxfoundation.org>
Date:   Fri,  8 May 2020 14:35:52 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Russell King <rmk+kernel@...linux.org.uk>,
        "David S. Miller" <davem@...emloft.net>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.6 35/49] net: phy: bcm84881: clear settings on link down

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

[ Upstream commit 796a8fa28980050bf1995617f0876484f3dc1026 ]

Clear the link partner advertisement, speed, duplex and pause when
the link goes down, as other phylib drivers do.  This avoids the
stale link partner, speed and duplex settings being reported via
ethtool.

Signed-off-by: Russell King <rmk+kernel@...linux.org.uk>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/net/phy/bcm84881.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/phy/bcm84881.c b/drivers/net/phy/bcm84881.c
index 14d55a77eb28a..1260115829283 100644
--- a/drivers/net/phy/bcm84881.c
+++ b/drivers/net/phy/bcm84881.c
@@ -174,9 +174,6 @@ static int bcm84881_read_status(struct phy_device *phydev)
 	if (phydev->autoneg == AUTONEG_ENABLE && !phydev->autoneg_complete)
 		phydev->link = false;
 
-	if (!phydev->link)
-		return 0;
-
 	linkmode_zero(phydev->lp_advertising);
 	phydev->speed = SPEED_UNKNOWN;
 	phydev->duplex = DUPLEX_UNKNOWN;
@@ -184,6 +181,9 @@ static int bcm84881_read_status(struct phy_device *phydev)
 	phydev->asym_pause = 0;
 	phydev->mdix = 0;
 
+	if (!phydev->link)
+		return 0;
+
 	if (phydev->autoneg_complete) {
 		val = genphy_c45_read_lpa(phydev);
 		if (val < 0)
-- 
2.20.1