macb: use random mac if stored address in EEPROM is invalid

We should use a random mac address if the EEPROM doesn't contain a valid
one. This makes life on Boards with unprogrammed EEPROM devices easier.

Signed-off-by: Sven Schnelle <svens@stackframe.org>
Cc: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

diff --git a/drivers/net/macb.c b/drivers/net/macb.c
index 92dccd4..e346302 100644 (file)
--- a/drivers/net/macb.c
+++ b/drivers/net/macb.c
@@ -80,8 +80,12 @@ static void __init macb_get_hwaddr(struct macb *bp)
        addr[4] = top & 0xff;
        addr[5] = (top >> 8) & 0xff;
 
-       if (is_valid_ether_addr(addr))
+       if (is_valid_ether_addr(addr)) {
                memcpy(bp->dev->dev_addr, addr, sizeof(addr));
+       } else {
+               dev_info(&bp->pdev->dev, "invalid hw address, using random\n");
+               random_ether_addr(bp->dev->dev_addr);
+       }
 }
 
 static int macb_mdio_read(struct mii_bus *bus, int mii_id, int regnum)