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cpmac: fallback to switch mode if no PHY chip found 

If we were unable to detect a PHY on any of the MDIO bus id we tried instead of
bailing out with -ENODEV, assume the MAC is connected to a switch and use MDIO
bus 0. This unbreaks quite a lot of devices out there whose switch cannot be
detected.

Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Fainelli 2010-03-07 00:55:47 +00:00 committed by David S. Miller
parent 30765d0502
commit 9fba1c31f4
1 changed files with 3 additions and 2 deletions
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5
drivers/net/cpmac.c
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@ -1137,8 +1137,9 @@ static int __devinit cpmac_probe(struct platform_device *pdev)
}
if (phy_id == PHY_MAX_ADDR) {
dev_err(&pdev->dev, "no PHY present\n");
return -ENODEV;
dev_err(&pdev->dev, "no PHY present, falling back to switch on MDIO bus 0\n");
strncpy(mdio_bus_id, "0", MII_BUS_ID_SIZE); /* fixed phys bus */
phy_id = pdev->id;
}
dev = alloc_etherdev_mq(sizeof(*priv), CPMAC_QUEUES);