diff options
Diffstat (limited to 'net/core/dev.c')
| -rw-r--r-- | net/core/dev.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/net/core/dev.c b/net/core/dev.c index f91abf80016..3ca300d8527 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -5579,7 +5579,12 @@ int register_netdevice(struct net_device *dev) } } - dev->ifindex = dev_new_index(net); + ret = -EBUSY; + if (!dev->ifindex) + dev->ifindex = dev_new_index(net); + else if (__dev_get_by_index(net, dev->ifindex)) + goto err_uninit; + if (dev->iflink == -1) dev->iflink = dev->ifindex; |