vhost: fix zcopy reference counting

Fix get/put refcount imbalance with zero copy, which caused qemu to hang forever on guest driver unload. Signed-off-by: Michael S. Tsirkin <[email protected]>
chewitt · Jul 19, 2011 · 75fd9ed · 75fd9ed
1 parent 2723fea
commit 75fd9ed
Showing 1 changed file with 0 additions and 1 deletion.
diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
@@ -1578,7 +1578,6 @@ struct vhost_ubuf_ref *vhost_ubuf_alloc(struct vhost_virtqueue *vq,
 	if (!ubufs)
 		return ERR_PTR(-ENOMEM);
 	kref_init(&ubufs->kref);
-	kref_get(&ubufs->kref);
 	init_waitqueue_head(&ubufs->wait);
 	ubufs->vq = vq;
 	return ubufs;