[NET]: Dynamically allocate the loopback device, part 1.

This patch replaces all occurences to the static variable
loopback_dev to a pointer loopback_dev. That provides the
mindless, trivial, uninteressting change part for the dynamic
allocation for the loopback.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com>
Acked-By: Kirill Korotaev <dev@sw.ru>
Acked-by: Benjamin Thery <benjamin.thery@bull.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 2 deletions

diff --git a/drivers/net/loopback.c b/drivers/net/loopback.c
index 0e2252fd71ab..588092e13186 100644
--- a/drivers/net/loopback.c
+++ b/drivers/net/loopback.c
@@ -202,7 +202,7 @@ static const struct ethtool_ops loopback_ethtool_ops = {
  * The loopback device is special. There is only one instance and
  * it is statically allocated. Don't do this for other devices.
  */
-struct net_device loopback_dev = {
+struct net_device __loopback_dev = {
         .name                   = "lo",
         .get_stats              = &get_stats,
         .mtu                    = (16 * 1024) + 20 + 20 + 12,
@@ -227,10 +227,12 @@ struct net_device loopback_dev = {
         .nd_net                 = &init_net,
 };
 
+struct net_device *loopback_dev = &__loopback_dev;
+
 /* Setup and register the loopback device. */
 static int __init loopback_init(void)
 {
-        int err = register_netdev(&loopback_dev);
+        int err = register_netdev(loopback_dev);
 
         if (err)
                 panic("loopback: Failed to register netdevice: %d\n", err);