From: "Alex G." <mr.nuke.me@gmail.com>
To: netdev@vger.kernel.org
Cc: Roger Luethi <rl@hellgate.ch>, "David S. Miller" <davem@davemloft.net>
Subject: [PATCH] via-rhine: do not freak out due to invalid MAC address
Date: Sun, 17 Apr 2011 01:05:52 +0300 [thread overview]
Message-ID: <4DAA12C0.7030106@gmail.com> (raw)
via-rhine drops out of the init code if the hardware provides an invalid
MAC address. Roger Luethi has had several reports of Rhine NICs doing just
that. The hardware still works, though; assigning a random MAC address
allows the NIC to be used as usual. Tested as a standalone interface,
as carrier for ppp, and as bonding slave.
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
diff --git a/drivers/net/via-rhine.c b/drivers/net/via-rhine.c
index 0422a79..e7e0fa9 100644
--- a/drivers/net/via-rhine.c
+++ b/drivers/net/via-rhine.c
@@ -836,13 +836,18 @@ 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;
- printk(KERN_ERR "Invalid MAC address\n");
- goto err_out_unmap;
+ if (!is_valid_ether_addr(dev->dev_addr)) {
+ printk(KERN_ERR "via-rhine: Invalid MAC address: %pM. \n",
+ dev->dev_addr);
+ /* The device may still be used normally if a valid MAC is
+ * configured
+ */
+ random_ether_addr(dev->dev_addr);
+ printk(KERN_ERR "via-rhine: Using randomly generated address:"
+ "%pM instead. \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)
next reply other threads:[~2011-04-16 22:21 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-16 22:05 Alex G. [this message]
2011-04-17 0:08 ` [PATCH] via-rhine: do not freak out due to invalid MAC address Ben Hutchings
2011-04-17 0:11 ` David Miller
2011-04-17 0:15 ` [PATCH 0/2] via-rhine: Logging cleanups and use random " Joe Perches
2011-04-17 0:15 ` [PATCH 1/2] via_rhine: Use netdev_<level> and pr_<level> Joe Perches
2011-04-18 0:56 ` David Miller
2011-04-17 0:15 ` [PATCH 2/2] via-rhine: Assign random MAC address if necessary Joe Perches
2011-04-18 0:57 ` David Miller
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