net: phy: marvell10g: fix usage of new MMD modifying helpers

When replacing mv3310_modify() with phy_modify_mmd() we missed that
they behave differently, mv3310_modify() returns 1 on a changed
register value whilst phy_modify_mmd() returns 0. Fix this by replacing
phy_modify_mmd() with phy_modify_mmd_changed() where needed.

Fixes: b52c018d ("net: phy: make use of new MMD accessors")
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/phy/marvell10g.c

@@ -141,10 +141,9 @@ static int mv3310_hwmon_config(struct phy_device *phydev, bool enable)
 		return ret;
 
 	val = enable ? MV_V2_TEMP_CTRL_SAMPLE : MV_V2_TEMP_CTRL_DISABLE;
-	ret = phy_modify_mmd(phydev, MDIO_MMD_VEND2, MV_V2_TEMP_CTRL,
-			     MV_V2_TEMP_CTRL_MASK, val);
 
-	return ret < 0 ? ret : 0;
+	return phy_modify_mmd(phydev, MDIO_MMD_VEND2, MV_V2_TEMP_CTRL,
+			      MV_V2_TEMP_CTRL_MASK, val);
 }
 
 static void mv3310_hwmon_disable(void *data)
@@ -345,7 +344,7 @@ static int mv3310_config_aneg(struct phy_device *phydev)
 	linkmode_and(phydev->advertising, phydev->advertising,
 		     phydev->supported);
 
-	ret = phy_modify_mmd(phydev, MDIO_MMD_AN, MDIO_AN_ADVERTISE,
+	ret = phy_modify_mmd_changed(phydev, MDIO_MMD_AN, MDIO_AN_ADVERTISE,
 			     ADVERTISE_ALL | ADVERTISE_100BASE4 |
 			     ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM,
 			     linkmode_adv_to_mii_adv_t(phydev->advertising));
@@ -355,7 +354,7 @@ static int mv3310_config_aneg(struct phy_device *phydev)
 		changed = true;
 
 	reg = linkmode_adv_to_mii_ctrl1000_t(phydev->advertising);
-	ret = phy_modify_mmd(phydev, MDIO_MMD_AN, MV_AN_CTRL1000,
+	ret = phy_modify_mmd_changed(phydev, MDIO_MMD_AN, MV_AN_CTRL1000,
 			     ADVERTISE_1000FULL | ADVERTISE_1000HALF, reg);
 	if (ret < 0)
 		return ret;
@@ -369,8 +368,8 @@ static int mv3310_config_aneg(struct phy_device *phydev)
 	else
 		reg = 0;
 
-	ret = phy_modify_mmd(phydev, MDIO_MMD_AN, MDIO_AN_10GBT_CTRL,
-			     MDIO_AN_10GBT_CTRL_ADV10G, reg);
+	ret = phy_modify_mmd_changed(phydev, MDIO_MMD_AN, MDIO_AN_10GBT_CTRL,
+				     MDIO_AN_10GBT_CTRL_ADV10G, reg);
 	if (ret < 0)
 		return ret;
 	if (ret > 0)