atheros: add kernel workaround for bringing up eth1 on devices with a micrel switch...

SVN-Revision: 15472

diff --git a/target/linux/atheros/patches-2.6.28/220-enet_micrel_workaround.patch b/target/linux/atheros/patches-2.6.28/220-enet_micrel_workaround.patch
new file mode 100644 (file)
index 0000000..676b041
--- /dev/null
+++ b/target/linux/atheros/patches-2.6.28/220-enet_micrel_workaround.patch
@@ -0,0 +1,69 @@
+--- a/drivers/net/ar231x.c
++++ b/drivers/net/ar231x.c
+@@ -148,6 +148,7 @@ static int ar231x_mdiobus_write(struct m
+ static int ar231x_mdiobus_reset(struct mii_bus *bus);
+ static int ar231x_mdiobus_probe (struct net_device *dev);
+ static void ar231x_adjust_link(struct net_device *dev);
++static bool no_phy = false;
+ 
+ #ifndef ERR
+ #define ERR(fmt, args...) printk("%s: " fmt, __func__, ##args)
+@@ -279,6 +280,21 @@ int __init ar231x_probe(struct platform_
+ 
+       mdiobus_register(sp->mii_bus);
+ 
++      /* Workaround for Micrel switch, which is only available on
++       * one PHY and cannot be configured through MDIO */
++      if (!no_phy) {
++              u32 phy_id = 0;
++              get_phy_id(sp->mii_bus, 1, &phy_id);
++              if (phy_id == 0x00221450)
++                      no_phy = true;
++      }
++      if (no_phy) {
++              sp->link = 1;
++              netif_carrier_on(dev);
++              return 0;
++      }
++      no_phy = true;
++
+       if (ar231x_mdiobus_probe(dev) != 0) {
+               printk(KERN_ERR "%s: mdiobus_probe failed\n", dev->name);
+               rx_tasklet_cleanup(dev);
+@@ -335,8 +351,10 @@ static int __exit ar231x_remove(struct p
+       rx_tasklet_cleanup(dev);
+       ar231x_init_cleanup(dev);
+       unregister_netdev(dev);
+-      mdiobus_unregister(sp->mii_bus);
+-      mdiobus_free(sp->mii_bus);
++      if (sp->mii_bus) {
++              mdiobus_unregister(sp->mii_bus);
++              mdiobus_free(sp->mii_bus);
++      }
+       kfree(dev);
+       return 0;
+ }
+@@ -837,7 +855,12 @@ static int ar231x_rx_int(struct net_devi
+                               dev->stats.rx_bytes += skb->len;
+ 
+                               /* pass the packet to upper layers */
+-                              sp->rx(skb);
++                              if (sp->rx) {
++                                      sp->rx(skb);
++                              } else {
++                                      skb->protocol = eth_type_trans(skb, skb->dev);
++                                      netif_rx(skb);
++                              }
+                               skb_new->dev = dev;
+ 
+                               /* 16 bit align */
+@@ -1124,6 +1147,9 @@ static int ar231x_ioctl(struct net_devic
+       struct ar231x_private *sp = netdev_priv(dev);
+       int ret;
+ 
++      if (!sp->phy_dev)
++              return -ENODEV;
++
+       switch (cmd) {
+ 
+       case SIOCETHTOOL: