From cc88327f457d9fcda00d17f169a08b1961ec37ca Mon Sep 17 00:00:00 2001 From: Simon Baatz Date: Sun, 24 Mar 2013 10:34:00 +0000 Subject: [PATCH] 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 Acked-by: Florian Fainelli Signed-off-by: David S. Miller --- drivers/net/ethernet/marvell/mv643xx_eth.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/marvell/mv643xx_eth.c b/drivers/net/ethernet/marvell/mv643xx_eth.c index a65a92ef19eca..aedbd8256ad1b 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); -- 2.39.5