drivers/iommu/virtio-iommu.c

520 	struct virtio_iommu_req_probe *probe;
528 	probe_len = sizeof(*probe) + viommu->probe_size +
530 	probe = kzalloc(probe_len, GFP_KERNEL);
531 	if (!probe)
534 	probe->head.type = VIRTIO_IOMMU_T_PROBE;
537 	 * IDs are consistent. Only probe the first one.
539 	probe->endpoint = cpu_to_le32(fwspec->ids[0]);
541 	ret = viommu_send_req_sync(viommu, probe, probe_len);
545 	prop = (void *)probe->properties;
567 		prop = (void *)probe->properties + cur;
572 	kfree(probe);
1268 	.probe			= viommu_probe,