tree adb4a58955d6ca3dc7674da78d0c3f04069ffa09
parent 41ef81be794f8d3f0edb7f15f952113ec999cbd6
author Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp> 1548722753 +0900
committer David S. Miller <davem@davemloft.net> 1548885763 -0800

virtio_net: Don't enable NAPI when interface is down

Commit 4e09ff536284 ("virtio-net: disable NAPI only when enabled during
XDP set") tried to fix inappropriate NAPI enabling/disabling when
!netif_running(), but was not complete.

On error path virtio_net could enable NAPI even when !netif_running().
This can cause enabling NAPI twice on virtnet_open(), which would
trigger BUG_ON() in napi_enable().

Fixes: 4941d472bf95b ("virtio-net: do not reset during XDP set")
Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Acked-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>