1 files changed, 3 insertions, 6 deletions

diff --git a/drivers/isdn/i4l/isdn_net.c b/drivers/isdn/i4l/isdn_net.c
index 7c5f97033b9f..cb8943da4f12 100644
--- a/drivers/isdn/i4l/isdn_net.c
+++ b/drivers/isdn/i4l/isdn_net.c
@@ -292,7 +292,9 @@ isdn_net_unbind_channel(isdn_net_local * lp)
         lp->dialstate = 0;
         dev->rx_netdev[isdn_dc2minor(lp->isdn_device, lp->isdn_channel)] = NULL;
         dev->st_netdev[isdn_dc2minor(lp->isdn_device, lp->isdn_channel)] = NULL;
-        isdn_free_channel(lp->isdn_device, lp->isdn_channel, ISDN_USAGE_NET);
+        if (lp->isdn_device != -1 && lp->isdn_channel != -1)
+                isdn_free_channel(lp->isdn_device, lp->isdn_channel,
+                                  ISDN_USAGE_NET);
         lp->flags &= ~ISDN_NET_CONNECTED;
         lp->isdn_device = -1;
         lp->isdn_channel = -1;
@@ -2513,7 +2515,6 @@ static const struct net_device_ops isdn_netdev_ops = {
         .ndo_stop             = isdn_net_close,
         .ndo_do_ioctl         = isdn_net_ioctl,
 
-        .ndo_validate_addr    = NULL,
         .ndo_start_xmit       = isdn_net_start_xmit,
         .ndo_get_stats        = isdn_net_get_stats,
         .ndo_tx_timeout       = isdn_net_tx_timeout,
@@ -2528,12 +2529,8 @@ static void _isdn_setup(struct net_device *dev)
 
         ether_setup(dev);
 
-        dev->flags = IFF_NOARP | IFF_POINTOPOINT;
         /* Setup the generic properties */
-        dev->mtu = 1500;
         dev->flags = IFF_NOARP|IFF_POINTOPOINT;
-        dev->type = ARPHRD_ETHER;
-        dev->addr_len = ETH_ALEN;
         dev->header_ops = NULL;
         dev->netdev_ops = &isdn_netdev_ops;