in nsm-driver/nsm.c [352:360]
static int nsm_device_init_vq(struct virtio_device *vdev) { struct virtqueue *vq = virtio_find_single_vq(vdev, nsm_vq_callback, NSM_VQ_NAME); if (IS_ERR(vq)) return PTR_ERR(vq); return 0; }