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virtio-net: remove useless disable on freeze 

disable_cb is just an optimization: it
can not guarantee that there are no callbacks.
In particular it doesn't have any effect when
event index is on.

Instead, detach, napi disable and reset on freeze ensure we don't run
concurrently with a callback.

Remove the useless calls so we get same behaviour
with and without event index.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael S. Tsirkin 2012-05-30 17:21:29 +03:00 committed by David S. Miller
parent 0053ea9c34
commit 3bbf372c6c
1 changed files with 0 additions and 5 deletions
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5
drivers/net/virtio_net.c
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@ -1231,11 +1231,6 @@ static int virtnet_freeze(struct virtio_device *vdev)
vi->config_enable = false; vi->config_enable = false;
mutex_unlock(&vi->config_lock); mutex_unlock(&vi->config_lock);
virtqueue_disable_cb(vi->rvq);
virtqueue_disable_cb(vi->svq);
if (virtio_has_feature(vi->vdev, VIRTIO_NET_F_CTRL_VQ))
virtqueue_disable_cb(vi->cvq);
netif_device_detach(vi->dev); netif_device_detach(vi->dev);
cancel_delayed_work_sync(&vi->refill); cancel_delayed_work_sync(&vi->refill);