xen-netfront: Remove the meaningless code

The function netif_set_real_num_tx_queues() will return -EINVAL if
the second parameter < 1, so call this function with the second
parameter set to 0 is meaningless.

Signed-off-by: Liang Li <liang.z.li@intel.com>
Reviewed-by: David Vrabel <david.vrabel@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c
index 56d8afd..1807cd1 100644 (file)
--- a/drivers/net/xen-netfront.c
+++ b/drivers/net/xen-netfront.c
@@ -1245,10 +1245,6 @@ static struct net_device *xennet_create_dev(struct xenbus_device *dev)
        np                   = netdev_priv(netdev);
        np->xbdev            = dev;
 
-       /* No need to use rtnl_lock() before the call below as it
-        * happens before register_netdev().
-        */
-       netif_set_real_num_tx_queues(netdev, 0);
        np->queues = NULL;
 
        err = -ENOMEM;
@@ -1900,9 +1896,6 @@ abort_transaction_no_dev_fatal:
        xennet_disconnect_backend(info);
        kfree(info->queues);
        info->queues = NULL;
-       rtnl_lock();
-       netif_set_real_num_tx_queues(info->netdev, 0);
-       rtnl_unlock();
  out:
        return err;
 }