| 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: |
| 56 | |
