netdev: gianfar: add MII ioctl handler

This is the same kind of wrapper that can also be found in many
other network device drivers.

Tested with a freescale MPC8349E host CPU:
Toggled the interface LEDs on a DP83865 PHY.

Signed-off-by: Clifford Wolf <clifford@clifford.at>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 15 insertions, 0 deletions

diff --git a/drivers/net/gianfar.c b/drivers/net/gianfar.c
index 1b8deca8b9f8..efcbeb6c8673 100644
--- a/drivers/net/gianfar.c
+++ b/drivers/net/gianfar.c
@@ -296,6 +296,20 @@ err_out:
         return err;
 }
 
+/* Ioctl MII Interface */
+static int gfar_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
+{
+        struct gfar_private *priv = netdev_priv(dev);
+
+        if (!netif_running(dev))
+                return -EINVAL;
+
+        if (!priv->phydev)
+                return -ENODEV;
+
+        return phy_mii_ioctl(priv->phydev, if_mii(rq), cmd);
+}
+
 /* Set up the ethernet device structure, private data,
  * and anything else we need before we start */
 static int gfar_probe(struct of_device *ofdev,
@@ -366,6 +380,7 @@ static int gfar_probe(struct of_device *ofdev,
         dev->set_multicast_list = gfar_set_multi;
 
         dev->ethtool_ops = &gfar_ethtool_ops;
+        dev->do_ioctl = gfar_ioctl;
 
         if (priv->device_flags & FSL_GIANFAR_DEV_HAS_CSUM) {
                 priv->rx_csum_enable = 1;