338 	devinfo_walk_data_t *diw;  in devinfo_walk_init()  local
341 	diw = mdb_alloc(sizeof (devinfo_walk_data_t), UM_SLEEP);  in devinfo_walk_init()
342 	diw->diw_parent = *wsp;  in devinfo_walk_init()
343 	diw->diw_child = *wsp;  in devinfo_walk_init()
344 	wsp->walk_data = diw;  in devinfo_walk_init()
346 	diw->diw_mode = DIW_PARENT;  in devinfo_walk_init()
348 	if (devinfo_parents_walk_init(&diw->diw_parent) == -1) {  in devinfo_walk_init()
349 		mdb_free(diw, sizeof (devinfo_walk_data_t));  in devinfo_walk_init()
358 	dip = diw->diw_parent.walk_data;  in devinfo_walk_init()
359 	diw->diw_child.walk_arg = &dip->dip_base_depth;  in devinfo_walk_init()
361 	if (devinfo_children_walk_init(&diw->diw_child) == -1) {  in devinfo_walk_init()
362 		devinfo_parents_walk_fini(&diw->diw_parent);  in devinfo_walk_init()
363 		mdb_free(diw, sizeof (devinfo_walk_data_t));  in devinfo_walk_init()
373 	devinfo_walk_data_t *diw = wsp->walk_data;  in devinfo_walk_step()  local
376 	if (diw->diw_mode == DIW_PARENT) {  in devinfo_walk_step()
377 		status = devinfo_parents_walk_step(&diw->diw_parent);  in devinfo_walk_step()
382 			diw->diw_mode = DIW_CHILD;  in devinfo_walk_step()
385 	} else if (diw->diw_mode == DIW_CHILD) {  in devinfo_walk_step()
386 		status = devinfo_children_walk_step(&diw->diw_child);  in devinfo_walk_step()
388 			diw->diw_mode = DIW_DONE;  in devinfo_walk_step()
400 	devinfo_walk_data_t *diw = wsp->walk_data;  in devinfo_walk_fini()  local
402 	devinfo_children_walk_fini(&diw->diw_child);  in devinfo_walk_fini()
403 	devinfo_parents_walk_fini(&diw->diw_parent);  in devinfo_walk_fini()
404 	mdb_free(diw, sizeof (devinfo_walk_data_t));  in devinfo_walk_fini()