1286 static int uvc_scan_chain_entity(struct uvc_video_chain *chain,  in uvc_scan_chain_entity()  argument
1306 		if (chain->processing != NULL) {  in uvc_scan_chain_entity()
1312 		chain->processing = entity;  in uvc_scan_chain_entity()
1323 		if (chain->selector != NULL) {  in uvc_scan_chain_entity()
1329 		chain->selector = entity;  in uvc_scan_chain_entity()
1365 	list_add_tail(&entity->chain, &chain->entities);  in uvc_scan_chain_entity()
1369 static int uvc_scan_chain_forward(struct uvc_video_chain *chain,  in uvc_scan_chain_forward()  argument
1380 		forward = uvc_entity_by_reference(chain->dev, entity->id,  in uvc_scan_chain_forward()
1396 			list_add_tail(&forward->chain, &chain->entities);  in uvc_scan_chain_forward()
1416 			list_add_tail(&forward->chain, &chain->entities);  in uvc_scan_chain_forward()
1433 static int uvc_scan_chain_backward(struct uvc_video_chain *chain,  in uvc_scan_chain_backward()  argument
1456 		chain->selector = entity;  in uvc_scan_chain_backward()
1459 			term = uvc_entity_by_id(chain->dev, id);  in uvc_scan_chain_backward()
1470 			list_add_tail(&term->chain, &chain->entities);  in uvc_scan_chain_backward()
1471 			uvc_scan_chain_forward(chain, term, entity);  in uvc_scan_chain_backward()
1496 	entity = uvc_entity_by_id(chain->dev, id);  in uvc_scan_chain_backward()
1507 static int uvc_scan_chain(struct uvc_video_chain *chain,  in uvc_scan_chain()  argument
1519 		if (entity->chain.next || entity->chain.prev) {  in uvc_scan_chain()
1526 		if (uvc_scan_chain_entity(chain, entity) < 0)  in uvc_scan_chain()
1530 		if (uvc_scan_chain_forward(chain, entity, prev) < 0)  in uvc_scan_chain()
1535 		if (uvc_scan_chain_backward(chain, &entity) < 0)  in uvc_scan_chain()
1549 	list_for_each_entry(term, terms, chain) {  in uvc_print_terms()
1566 static const char *uvc_print_chain(struct uvc_video_chain *chain)  in uvc_print_chain()  argument
1571 	p += uvc_print_terms(&chain->entities, UVC_TERM_INPUT, p);  in uvc_print_chain()
1573 	uvc_print_terms(&chain->entities, UVC_TERM_OUTPUT, p);  in uvc_print_chain()
1585 	struct uvc_video_chain *chain;  in uvc_scan_device()  local
1597 		if (term->chain.next || term->chain.prev)  in uvc_scan_device()
1600 		chain = kzalloc(sizeof(*chain), GFP_KERNEL);  in uvc_scan_device()
1601 		if (chain == NULL)  in uvc_scan_device()
1604 		INIT_LIST_HEAD(&chain->entities);  in uvc_scan_device()
1605 		mutex_init(&chain->ctrl_mutex);  in uvc_scan_device()
1606 		chain->dev = dev;  in uvc_scan_device()
1607 		v4l2_prio_init(&chain->prio);  in uvc_scan_device()
1611 		if (uvc_scan_chain(chain, term) < 0) {  in uvc_scan_device()
1612 			kfree(chain);  in uvc_scan_device()
1617 			  uvc_print_chain(chain));  in uvc_scan_device()
1619 		list_add_tail(&chain->list, &dev->chains);  in uvc_scan_device()
1662 		struct uvc_video_chain *chain;  in uvc_delete()  local
1663 		chain = list_entry(p, struct uvc_video_chain, list);  in uvc_delete()
1664 		kfree(chain);  in uvc_delete()
1765 	vdev->prio = &stream->chain->prio;  in uvc_register_video()
1783 		stream->chain->caps |= V4L2_CAP_VIDEO_CAPTURE;  in uvc_register_video()
1785 		stream->chain->caps |= V4L2_CAP_VIDEO_OUTPUT;  in uvc_register_video()
1795 	struct uvc_video_chain *chain)  in uvc_register_terms()  argument
1801 	list_for_each_entry(term, &chain->entities, chain) {  in uvc_register_terms()
1812 		stream->chain = chain;  in uvc_register_terms()
1825 	struct uvc_video_chain *chain;  in uvc_register_chains()  local
1828 	list_for_each_entry(chain, &dev->chains, list) {  in uvc_register_chains()
1829 		ret = uvc_register_terms(dev, chain);  in uvc_register_chains()
1834 		ret = uvc_mc_register_entities(chain);  in uvc_register_chains()