diff options
| author |   Simon Baatz <gmbnomis@gmail.com> | 2013-03-24 10:34:00 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2013-03-24 17:07:15 -0400 |
| commit | 976c90b90187f2eb4778d766d52d6ab176714734 (patch) | |
| tree | 1717485c6a70bec36da9a4ccec849c7470962ff5 | |
| parent | net: mvmdio: define module alias for platform device (diff) | |
| download | linux-dev-976c90b90187f2eb4778d766d52d6ab176714734.tar.xz linux-dev-976c90b90187f2eb4778d766d52d6ab176714734.zip | |
mv643xx_eth: defer probing if Marvell Orion MDIO driver not loaded
When both the Marvell MV643XX ethernet driver and the Orion MDIO driver
are compiled as modules, the ethernet driver may be probed before the
MDIO driver. Let mv643xx_eth_probe() return EPROBE_DEFER in this case,
i.e. when it cannot find the PHY.
Signed-off-by: Simon Baatz <gmbnomis@gmail.com>
Acked-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/ethernet/marvell/mv643xx_eth.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/net/ethernet/marvell/mv643xx_eth.c b/drivers/net/ethernet/marvell/mv643xx_eth.c index a65a92ef19ec..aedbd8256ad1 100644 --- a/drivers/net/ethernet/marvell/mv643xx_eth.c +++ b/drivers/net/ethernet/marvell/mv643xx_eth.c @@ -2681,7 +2681,7 @@ static struct phy_device *phy_scan(struct mv643xx_eth_private *mp, } /* Attempt to connect to the PHY using orion-mdio */ - phydev = NULL; + phydev = ERR_PTR(-ENODEV); for (i = 0; i < num; i++) { int addr = (start + i) & 0x1f; @@ -2812,11 +2812,17 @@ static int mv643xx_eth_probe(struct platform_device *pdev) netif_set_real_num_tx_queues(dev, mp->txq_count); netif_set_real_num_rx_queues(dev, mp->rxq_count); - if (pd->phy_addr != MV643XX_ETH_PHY_NONE) + if (pd->phy_addr != MV643XX_ETH_PHY_NONE) { mp->phy = phy_scan(mp, pd->phy_addr); - if (mp->phy != NULL) + if (IS_ERR(mp->phy)) { + err = PTR_ERR(mp->phy); + if (err == -ENODEV) + err = -EPROBE_DEFER; + goto out; + } phy_init(mp, pd->speed, pd->duplex); + } SET_ETHTOOL_OPS(dev, &mv643xx_eth_ethtool_ops); |