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mv643xx_eth: Fix use of uninitialized port_num field

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In this driver, the default ethernet address is first set by by calling
eth_port_uc_addr_get() which reads the relevant registers of the
corresponding port as initially set by firmware. However that function
used the port_num field accessed through the private area of net_dev
before it was set.

The result was that one board I have ended up with the unicast address
set to 00:00:00:00:00:00 (only port 1 is connected on this board). The
problem appeared after commit 84dd619e4dc3b0b1c40dafd98c90fd950bce7bc5.

This patch fixes the bug by setting mp->port_num prior to calling
eth_port_uc_get_addr().

Signed-off-by: Gabriel Paubert <paubert@iram.es>
Signed-off-by: Dale Farnsworth <dale@farnsworth.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Gabriel Paubert 2007-03-23 12:03:52 -07:00 committed by Jeff Garzik
parent 3ba4d093fe
commit fadac4060c
1 changed files with 1 additions and 3 deletions
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4
drivers/net/mv643xx_eth.c
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@ -1379,7 +1379,7 @@ static int mv643xx_eth_probe(struct platform_device *pdev)
spin_lock_init(&mp->lock);
port_num = pd->port_number;
port_num = mp->port_num = pd->port_number;
/* set default config values */
eth_port_uc_addr_get(dev, dev->dev_addr);
@ -1411,8 +1411,6 @@ static int mv643xx_eth_probe(struct platform_device *pdev)
duplex = pd->duplex;
speed = pd->speed;
mp->port_num = port_num;
/* Hook up MII support for ethtool */
mp->mii.dev = dev;
mp->mii.mdio_read = mv643xx_mdio_read;