netdev - [PATCH 2/2] via-rhine: Assign random MAC address if necessary

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Message-Id: <c7efaaf6a943f911162261edd7a2186086cda953.1302998994.git.joe@perches.com>
Date:	Sat, 16 Apr 2011 17:15:26 -0700
From:	Joe Perches <joe@...ches.com>
To:	Alexandru Gagniuc <mr.nuke.me@...il.com>,
	Roger Luethi <rl@...lgate.ch>
Cc:	"David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] 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@...il.com>
Signed-off-by: Joe Perches <joe@...ches.com>
---
 drivers/net/via-rhine.c |   12 +++++++-----
 1 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/drivers/net/via-rhine.c b/drivers/net/via-rhine.c
index 40f394c..7f23ab9 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)
-- 
1.7.4.2.g597a6.dirty

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