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virtio_net: enable VQs early on restore

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virtio spec requires drivers to set DRIVER_OK before using VQs.
This is set automatically after restore returns, virtio net violated this
rule by using receive VQs within restore.

To fix, call virtio_device_ready before using VQs.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Michael S. Tsirkin 2014-10-15 10:22:32 +10:30 committed by Rusty Russell
parent 401bbdc901
commit e53fbd11e9
1 changed files with 2 additions and 0 deletions
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2
drivers/net/virtio_net.c
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@ -1912,6 +1912,8 @@ static int virtnet_restore(struct virtio_device *vdev)
if (err)
return err;
virtio_device_ready(vdev);
if (netif_running(vi->dev)) {
for (i = 0; i < vi->curr_queue_pairs; i++)
if (!try_fill_recv(&vi->rq[i], GFP_KERNEL))