tree 47291791e5b1ad3165e217a0daa1d4a75bf51529
parent df13c59b54a9f8d3e20a2fb565d54eee8dac8768
author Mohammed Gamal <mgamal@redhat.com> 1525853854 +0200
committer David S. Miller <davem@davemloft.net> 1525981020 -0400

hv_netvsc: Fix net device attach on older Windows hosts

On older windows hosts the net_device instance is returned to
the caller of rndis_filter_device_add() without having the presence
bit set first. This would cause any subsequent calls to network device
operations (e.g. MTU change, channel change) to fail after the device
is detached once, returning -ENODEV.

Instead of returning the device instabce, we take the exit path where
we call netif_device_attach()

Fixes: 7b2ee50c0cd5 ("hv_netvsc: common detach logic")
Signed-off-by: Mohammed Gamal <mgamal@redhat.com>
Reviewed-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>