net: gianfar: simplify init_phy()

Use phy_set_max_speed() to simplify init_phy().

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/b863dcf7-31e8-45a1-a284-7075da958ff0@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Author: hkallweit

drivers/net/ethernet/freescale/gianfar.c

@@ -1647,20 +1647,11 @@ static void gfar_configure_serdes(struct net_device *dev)
  */
 static int init_phy(struct net_device *dev)
 {
-	__ETHTOOL_DECLARE_LINK_MODE_MASK(mask) = { 0, };
 	struct gfar_private *priv = netdev_priv(dev);
 	phy_interface_t interface = priv->interface;
 	struct phy_device *phydev;
 	struct ethtool_keee edata;
 
-	linkmode_set_bit_array(phy_10_100_features_array,
-			       ARRAY_SIZE(phy_10_100_features_array),
-			       mask);
-	linkmode_set_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, mask);
-	linkmode_set_bit(ETHTOOL_LINK_MODE_MII_BIT, mask);
-	if (priv->device_flags & FSL_GIANFAR_DEV_HAS_GIGABIT)
-		linkmode_set_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT, mask);
-
 	priv->oldlink = 0;
 	priv->oldspeed = 0;
 	priv->oldduplex = -1;
@@ -1675,9 +1666,8 @@ static int init_phy(struct net_device *dev)
 	if (interface == PHY_INTERFACE_MODE_SGMII)
 		gfar_configure_serdes(dev);
 
-	/* Remove any features not supported by the controller */
-	linkmode_and(phydev->supported, phydev->supported, mask);
-	linkmode_copy(phydev->advertising, phydev->supported);
+	if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_GIGABIT))
+		phy_set_max_speed(phydev, SPEED_100);
 
 	/* Add support for flow control */
 	phy_support_asym_pause(phydev);