net: dpaa2-mac: absorb phylink_start() call into dpaa2_mac_start()

The phylink handling is intended to be hidden inside the dpaa2_mac
object. Move the phylink_start() call into dpaa2_mac_start(), and
phylink_stop() into dpaa2_mac_stop().
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Tested-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c

@@ -2201,10 +2201,8 @@ static int dpaa2_eth_open(struct net_device *net_dev)
 		goto enable_err;
 	}
 
-	if (dpaa2_eth_is_type_phy(priv)) {
+	if (dpaa2_eth_is_type_phy(priv))
 		dpaa2_mac_start(priv->mac);
-		phylink_start(priv->mac->phylink);
-	}
 
 	return 0;
 
@@ -2278,7 +2276,6 @@ static int dpaa2_eth_stop(struct net_device *net_dev)
 	int retries = 10;
 
 	if (dpaa2_eth_is_type_phy(priv)) {
-		phylink_stop(priv->mac->phylink);
 		dpaa2_mac_stop(priv->mac);
 	} else {
 		netif_tx_stop_all_queues(net_dev);

drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c

@@ -338,12 +338,20 @@ static void dpaa2_mac_set_supported_interfaces(struct dpaa2_mac *mac)
 
 void dpaa2_mac_start(struct dpaa2_mac *mac)
 {
+	ASSERT_RTNL();
+
 	if (mac->serdes_phy)
 		phy_power_on(mac->serdes_phy);
+
+	phylink_start(mac->phylink);
 }
 
 void dpaa2_mac_stop(struct dpaa2_mac *mac)
 {
+	ASSERT_RTNL();
+
+	phylink_stop(mac->phylink);
+
 	if (mac->serdes_phy)
 		phy_power_off(mac->serdes_phy);
 }

drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c

@@ -702,10 +702,8 @@ static int dpaa2_switch_port_open(struct net_device *netdev)
 
 	dpaa2_switch_enable_ctrl_if_napi(ethsw);
 
-	if (dpaa2_switch_port_is_type_phy(port_priv)) {
+	if (dpaa2_switch_port_is_type_phy(port_priv))
 		dpaa2_mac_start(port_priv->mac);
-		phylink_start(port_priv->mac->phylink);
-	}
 
 	return 0;
 }
@@ -717,7 +715,6 @@ static int dpaa2_switch_port_stop(struct net_device *netdev)
 	int err;
 
 	if (dpaa2_switch_port_is_type_phy(port_priv)) {
-		phylink_stop(port_priv->mac->phylink);
 		dpaa2_mac_stop(port_priv->mac);
 	} else {
 		netif_tx_stop_all_queues(netdev);