Merge remote-tracking branches 'asoc/topic/tdm-slot', 'asoc/topic/tegra', 'asoc/topic...

[cascardo/linux.git] / drivers / net / ethernet / ti / cpsw.c

diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c
index e068d48..a39131f 100644 (file)
--- a/drivers/net/ethernet/ti/cpsw.c
+++ b/drivers/net/ethernet/ti/cpsw.c
@@ -1683,6 +1683,19 @@ static int cpsw_ndo_vlan_rx_add_vid(struct net_device *ndev,
        if (vid == priv->data.default_vlan)
                return 0;
 
+       if (priv->data.dual_emac) {
+               /* In dual EMAC, reserved VLAN id should not be used for
+                * creating VLAN interfaces as this can break the dual
+                * EMAC port separation
+                */
+               int i;
+
+               for (i = 0; i < priv->data.slaves; i++) {
+                       if (vid == priv->slaves[i].port_vlan)
+                               return -EINVAL;
+               }
+       }
+
        dev_info(priv->dev, "Adding vlanid %d to vlan filter\n", vid);
        return cpsw_add_vlan_ale_entry(priv, vid);
 }
@@ -1696,6 +1709,15 @@ static int cpsw_ndo_vlan_rx_kill_vid(struct net_device *ndev,
        if (vid == priv->data.default_vlan)
                return 0;
 
+       if (priv->data.dual_emac) {
+               int i;
+
+               for (i = 0; i < priv->data.slaves; i++) {
+                       if (vid == priv->slaves[i].port_vlan)
+                               return -EINVAL;
+               }
+       }
+
        dev_info(priv->dev, "removing vlanid %d from vlan filter\n", vid);
        ret = cpsw_ale_del_vlan(priv->ale, vid, 0);
        if (ret != 0)