net: mscc: ocelot: move port initialization into separate function

We need a function for the DSA front-end that does none of the
net_device registration, but initializes the hardware ports.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/mscc/ocelot.c b/drivers/net/ethernet/mscc/ocelot.c
index 107a07c..83ecbbd 100644 (file)
--- a/drivers/net/ethernet/mscc/ocelot.c
+++ b/drivers/net/ethernet/mscc/ocelot.c
@@ -2133,6 +2133,28 @@ static int ocelot_init_timestamp(struct ocelot *ocelot)
        return 0;
 }
 
+static void ocelot_init_port(struct ocelot *ocelot, int port)
+{
+       struct ocelot_port *ocelot_port = ocelot->ports[port];
+
+       INIT_LIST_HEAD(&ocelot_port->skbs);
+
+       /* Basic L2 initialization */
+
+       /* Drop frames with multicast source address */
+       ocelot_rmw_gix(ocelot, ANA_PORT_DROP_CFG_DROP_MC_SMAC_ENA,
+                      ANA_PORT_DROP_CFG_DROP_MC_SMAC_ENA,
+                      ANA_PORT_DROP_CFG, port);
+
+       /* Set default VLAN and tag type to 8021Q. */
+       ocelot_rmw_gix(ocelot, REW_PORT_VLAN_CFG_PORT_TPID(ETH_P_8021Q),
+                      REW_PORT_VLAN_CFG_PORT_TPID_M,
+                      REW_PORT_VLAN_CFG, port);
+
+       /* Enable vcap lookups */
+       ocelot_vcap_enable(ocelot, port);
+}
+
 int ocelot_probe_port(struct ocelot *ocelot, u8 port,
                      void __iomem *regs,
                      struct phy_device *phy)
@@ -2140,7 +2162,6 @@ int ocelot_probe_port(struct ocelot *ocelot, u8 port,
        struct ocelot_port_private *priv;
        struct ocelot_port *ocelot_port;
        struct net_device *dev;
-       u32 val;
        int err;
 
        dev = alloc_etherdev(sizeof(struct ocelot_port_private));
@@ -2168,32 +2189,14 @@ int ocelot_probe_port(struct ocelot *ocelot, u8 port,
        ocelot_mact_learn(ocelot, PGID_CPU, dev->dev_addr, ocelot_port->pvid,
                          ENTRYTYPE_LOCKED);
 
-       INIT_LIST_HEAD(&ocelot_port->skbs);
+       ocelot_init_port(ocelot, port);
 
        err = register_netdev(dev);
        if (err) {
                dev_err(ocelot->dev, "register_netdev failed\n");
-               goto err_register_netdev;
+               free_netdev(dev);
        }
 
-       /* Basic L2 initialization */
-
-       /* Drop frames with multicast source address */
-       val = ANA_PORT_DROP_CFG_DROP_MC_SMAC_ENA;
-       ocelot_rmw_gix(ocelot, val, val, ANA_PORT_DROP_CFG, port);
-
-       /* Set default VLAN and tag type to 8021Q. */
-       ocelot_rmw_gix(ocelot, REW_PORT_VLAN_CFG_PORT_TPID(ETH_P_8021Q),
-                      REW_PORT_VLAN_CFG_PORT_TPID_M,
-                      REW_PORT_VLAN_CFG, port);
-
-       /* Enable vcap lookups */
-       ocelot_vcap_enable(ocelot, port);
-
-       return 0;
-
-err_register_netdev:
-       free_netdev(dev);
        return err;
 }
 EXPORT_SYMBOL(ocelot_probe_port);