net: dsa: sja1105: convert to phylink_generic_validate()

Populate the MAC capabilities for the SJA1105 DSA switch using the same
decision making which sja1105_phylink_validate() uses. Remove the now
obsolete sja1105_phylink_validate() implementation to allow DSA to use
phylink_generic_validate() for this switch driver.

As noted by Vladimir, this fixes an inconsequential bug which allowed
gigabit and lower interface modes to be indicated when operating in
2500base-X mode.
Reviewed-by: Vladimir Oltean &lt;olteanv@gmail.com&gt;                                Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/dsa/sja1105/sja1105_main.c

@@ -1395,6 +1395,7 @@ static void sja1105_phylink_get_caps(struct dsa_switch *ds, int port,
 				     struct phylink_config *config)
 {
 	struct sja1105_private *priv = ds->priv;
+	struct sja1105_xmii_params_entry *mii;
 
 	/* This driver does not make use of the speed, duplex, pause or the
 	 * advertisement in its mac_config, so it is safe to mark this driver
@@ -1407,40 +1408,19 @@ static void sja1105_phylink_get_caps(struct dsa_switch *ds, int port,
 	 * we have to program that early.
 	 */
 	__set_bit(priv->phy_mode[port], config->supported_interfaces);
-}
-
-static void sja1105_phylink_validate(struct dsa_switch *ds, int port,
-				     unsigned long *supported,
-				     struct phylink_link_state *state)
-{
-	/* Construct a new mask which exhaustively contains all link features
-	 * supported by the MAC, and then apply that (logical AND) to what will
-	 * be sent to the PHY for "marketing".
-	 */
-	__ETHTOOL_DECLARE_LINK_MODE_MASK(mask) = { 0, };
-	struct sja1105_private *priv = ds->priv;
-	struct sja1105_xmii_params_entry *mii;
-
-	mii = priv->static_config.tables[BLK_IDX_XMII_PARAMS].entries;
 
 	/* The MAC does not support pause frames, and also doesn't
 	 * support half-duplex traffic modes.
 	 */
-	phylink_set(mask, Autoneg);
-	phylink_set(mask, MII);
-	phylink_set(mask, 10baseT_Full);
-	phylink_set(mask, 100baseT_Full);
-	phylink_set(mask, 100baseT1_Full);
+	config->mac_capabilities = MAC_10FD | MAC_100FD;
+
+	mii = priv->static_config.tables[BLK_IDX_XMII_PARAMS].entries;
 	if (mii->xmii_mode[port] == XMII_MODE_RGMII ||
 	    mii->xmii_mode[port] == XMII_MODE_SGMII)
-		phylink_set(mask, 1000baseT_Full);
-	if (priv->info->supports_2500basex[port]) {
-		phylink_set(mask, 2500baseT_Full);
-		phylink_set(mask, 2500baseX_Full);
-	}
+		config->mac_capabilities |= MAC_1000FD;
 
-	linkmode_and(supported, supported, mask);
-	linkmode_and(state->advertising, state->advertising, mask);
+	if (priv->info->supports_2500basex[port])
+		config->mac_capabilities |= MAC_2500FD;
 }
 
 static int
@@ -3140,7 +3120,6 @@ static const struct dsa_switch_ops sja1105_switch_ops = {
 	.port_change_mtu	= sja1105_change_mtu,
 	.port_max_mtu		= sja1105_get_max_mtu,
 	.phylink_get_caps	= sja1105_phylink_get_caps,
-	.phylink_validate	= sja1105_phylink_validate,
 	.phylink_mac_select_pcs	= sja1105_mac_select_pcs,
 	.phylink_mac_link_up	= sja1105_mac_link_up,
 	.phylink_mac_link_down	= sja1105_mac_link_down,