240 	devinfo_children_walk_data_t *dic;  in devinfo_children_walk_init()  local
251 	dic = mdb_alloc(sizeof (devinfo_children_walk_data_t), UM_SLEEP);  in devinfo_children_walk_init()
252 	wsp->walk_data = dic;  in devinfo_children_walk_init()
253 	dic->dic_end = (struct dev_info *)wsp->walk_addr;  in devinfo_children_walk_init()
259 		dic->dic_depth = (*(int *)wsp->walk_arg - 1);  in devinfo_children_walk_init()
260 		dic->dic_print_first_node = 0;  in devinfo_children_walk_init()
262 		dic->dic_depth = 0;  in devinfo_children_walk_init()
263 		dic->dic_print_first_node = 1;  in devinfo_children_walk_init()
272 	devinfo_children_walk_data_t *dic = wsp->walk_data;  in devinfo_children_walk_step()  local
281 	if (mdb_vread(&dic->dic_dev, sizeof (dic->dic_dev), addr) == -1) {  in devinfo_children_walk_step()
285 	cur = &dic->dic_node;  in devinfo_children_walk_step()
287 	if (dic->dic_print_first_node == 0)  in devinfo_children_walk_step()
288 		dic->dic_print_first_node = 1;  in devinfo_children_walk_step()
298 	if (dic->dic_dev.devi_child != NULL) {  in devinfo_children_walk_step()
299 		v = dic->dic_dev.devi_child;  in devinfo_children_walk_step()
300 		dic->dic_depth++;  in devinfo_children_walk_step()
301 	} else if (dic->dic_dev.devi_sibling != NULL && v != dic->dic_end) {  in devinfo_children_walk_step()
302 		v = dic->dic_dev.devi_sibling;  in devinfo_children_walk_step()
304 		while (v != NULL && v != dic->dic_end &&  in devinfo_children_walk_step()
305 		    dic->dic_dev.devi_sibling == NULL) {  in devinfo_children_walk_step()
306 			v = dic->dic_dev.devi_parent;  in devinfo_children_walk_step()
310 			mdb_vread(&dic->dic_dev,  in devinfo_children_walk_step()
312 			dic->dic_depth--;  in devinfo_children_walk_step()
314 		if (v != NULL && v != dic->dic_end)  in devinfo_children_walk_step()
315 			v = dic->dic_dev.devi_sibling;  in devinfo_children_walk_step()
316 		if (v == dic->dic_end)  in devinfo_children_walk_step()