target/linux/atheros/patches-3.3/220-enet_micrel_workaround.patch

   1 --- a/drivers/net/ethernet/ar231x/ar231x.c
   2 +++ b/drivers/net/ethernet/ar231x/ar231x.c
   3 @@ -151,6 +151,7 @@ static int ar231x_mdiobus_write(struct m
   4  static int ar231x_mdiobus_reset(struct mii_bus *bus);
   5  static int ar231x_mdiobus_probe (struct net_device *dev);
   6  static void ar231x_adjust_link(struct net_device *dev);
   7 +static bool no_phy = false;
   8
   9  #ifndef ERR
  10  #define ERR(fmt, args...) printk("%s: " fmt, __func__, ##args)
  11 @@ -300,6 +301,21 @@ int __devinit ar231x_probe(struct platfo
  12
  13         mdiobus_register(sp->mii_bus);
  14
  15 +       /* Workaround for Micrel switch, which is only available on
  16 +        * one PHY and cannot be configured through MDIO */
  17 +       if (!no_phy) {
  18 +               u32 phy_id = 0;
  19 +               get_phy_id(sp->mii_bus, 1, &phy_id);
  20 +               if (phy_id == 0x00221450)
  21 +                       no_phy = true;
  22 +       }
  23 +       if (no_phy) {
  24 +               sp->link = 1;
  25 +               netif_carrier_on(dev);
  26 +               return 0;
  27 +       }
  28 +       no_phy = true;
  29 +
  30         if (ar231x_mdiobus_probe(dev) != 0) {
  31                 printk(KERN_ERR "%s: mdiobus_probe failed\n", dev->name);
  32                 rx_tasklet_cleanup(dev);
  33 @@ -356,8 +372,10 @@ static int __devexit ar231x_remove(struc
  34         rx_tasklet_cleanup(dev);
  35         ar231x_init_cleanup(dev);
  36         unregister_netdev(dev);
  37 -       mdiobus_unregister(sp->mii_bus);
  38 -       mdiobus_free(sp->mii_bus);
  39 +       if (sp->mii_bus) {
  40 +               mdiobus_unregister(sp->mii_bus);
  41 +               mdiobus_free(sp->mii_bus);
  42 +       }
  43         kfree(dev);
  44         return 0;
  45  }
  46 @@ -1133,6 +1151,9 @@ static int ar231x_ioctl(struct net_devic
  47         struct ar231x_private *sp = netdev_priv(dev);
  48         int ret;
  49
  50 +       if (!sp->phy_dev)
  51 +               return -ENODEV;
  52 +
  53         switch (cmd) {
  54
  55         case SIOCETHTOOL: