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-rw-r--r--drivers/net/r6040.c8
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);