via-rhine: Assign random MAC address if necessary

Roger Luethi has had several reports of Rhine NICs providing
an invalid MAC address.  If so, assign a random MAC address so
the hardware can still be used.

Tested as a standalone interface, as carrier for ppp, and as a
bonding slave.

Original-patch-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 7 insertions, 5 deletions

diff --git a/drivers/net/via-rhine.c b/drivers/net/via-rhine.c
index 40f394ce113b..7f23ab913fd9 100644
--- a/drivers/net/via-rhine.c
+++ b/drivers/net/via-rhine.c
@@ -838,13 +838,15 @@ static int __devinit rhine_init_one(struct pci_dev *pdev,
 
         for (i = 0; i < 6; i++)
                 dev->dev_addr[i] = ioread8(ioaddr + StationAddr + i);
-        memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
 
-        if (!is_valid_ether_addr(dev->perm_addr)) {
-                rc = -EIO;
-                dev_err(&pdev->dev, "Invalid MAC address\n");
-                goto err_out_unmap;
+        if (!is_valid_ether_addr(dev->dev_addr)) {
+                /* Report it and use a random ethernet address instead */
+                netdev_err(dev, "Invalid MAC address: %pM\n", dev->dev_addr);
+                random_ether_addr(dev->dev_addr);
+                netdev_info(dev, "Using random MAC address: %pM\n",
+                            dev->dev_addr);
         }
+        memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
 
         /* For Rhine-I/II, phy_id is loaded from EEPROM */
         if (!phy_id)