diff options
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/r6040.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/net/r6040.c b/drivers/net/r6040.c index 6f97b47d74a6..65627253c988 100644 --- a/drivers/net/r6040.c +++ b/drivers/net/r6040.c @@ -742,6 +742,14 @@ static int r6040_up(struct net_device *dev) struct r6040_private *lp = netdev_priv(dev); void __iomem *ioaddr = lp->base; int ret; + u16 val; + + /* Check presence of a second PHY */ + val = r6040_phy_read(ioaddr, lp->phy_addr, 2); + if (val == 0xFFFF) { + printk(KERN_ERR DRV_NAME " no second PHY attached\n"); + return -EIO; + } /* Initialise and alloc RX/TX buffers */ r6040_init_txbufs(dev); |