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);