lantiq: fix PHY state handling issue

[openwrt.git] / target / linux / lantiq / patches-4.4 / 0400-xrx200-net-multi-phy.patch

diff --git a/target/linux/lantiq/patches-4.4/0400-xrx200-net-multi-phy.patch b/target/linux/lantiq/patches-4.4/0400-xrx200-net-multi-phy.patch
new file mode 100644 (file)
index 0000000..a86fe8d
--- /dev/null
+++ b/target/linux/lantiq/patches-4.4/0400-xrx200-net-multi-phy.patch
@@ -0,0 +1,38 @@
+--- a/drivers/net/ethernet/lantiq_xrx200.c
++++ b/drivers/net/ethernet/lantiq_xrx200.c
+@@ -1209,13 +1209,18 @@ static void xrx200_gmac_update(struct xr
+ static void xrx200_mdio_link(struct net_device *dev)
+ {
+       struct xrx200_priv *priv = netdev_priv(dev);
++      bool changed = false, link = false;
+       int i;
+ 
+       for (i = 0; i < priv->num_port; i++) {
+               if (!priv->port[i].phydev)
+                       continue;
+ 
++              if (priv->port[i].phydev->link)
++                      link = true;
++
+               if (priv->port[i].link != priv->port[i].phydev->link) {
++                      changed = true;
+                       xrx200_gmac_update(&priv->port[i]);
+                       priv->port[i].link = priv->port[i].phydev->link;
+                       netdev_info(dev, "port %d %s link\n",
+@@ -1223,6 +1228,8 @@ static void xrx200_mdio_link(struct net_
+                               (priv->port[i].link)?("got"):("lost"));
+               }
+       }
++      if (changed && !link)
++              netif_carrier_off(dev);
+ }
+ 
+ static inline int xrx200_mdio_poll(struct mii_bus *bus)
+@@ -1300,6 +1307,7 @@ static int xrx200_mdio_probe(struct net_
+                       | SUPPORTED_TP);
+       phydev->advertising = phydev->supported;
+       port->phydev = phydev;
++      phydev->no_auto_carrier_off = true;
+ 
+       pr_info("%s: attached PHY [%s] (phy_addr=%s, irq=%d)\n",
+               dev->name, phydev->drv->name,