From: Cong Wang
Date: Fri, 13 Oct 2017 11:58:53 -0700
> register_netdevice() could fail early when we have an invalid
> dev name, in which case ->ndo_uninit() is not called. For tun
> device, this is a problem because a timer etc. are already
> initialized and it
register_netdevice() could fail early when we have an invalid
dev name, in which case ->ndo_uninit() is not called. For tun
device, this is a problem because a timer etc. are already
initialized and it expects ->ndo_uninit() to clean them up.
We could move these initializations into a