1285 static int uvc_scan_chain_entity(struct uvc_video_chain *chain,  in uvc_scan_chain_entity()  argument
1305 		if (chain->processing != NULL) {  in uvc_scan_chain_entity()
1311 		chain->processing = entity;  in uvc_scan_chain_entity()
1322 		if (chain->selector != NULL) {  in uvc_scan_chain_entity()
1328 		chain->selector = entity;  in uvc_scan_chain_entity()
1364 	list_add_tail(&entity->chain, &chain->entities);  in uvc_scan_chain_entity()
1368 static int uvc_scan_chain_forward(struct uvc_video_chain *chain,  in uvc_scan_chain_forward()  argument
1379 		forward = uvc_entity_by_reference(chain->dev, entity->id,  in uvc_scan_chain_forward()
1395 			list_add_tail(&forward->chain, &chain->entities);  in uvc_scan_chain_forward()
1415 			list_add_tail(&forward->chain, &chain->entities);  in uvc_scan_chain_forward()
1432 static int uvc_scan_chain_backward(struct uvc_video_chain *chain,  in uvc_scan_chain_backward()  argument
1455 		chain->selector = entity;  in uvc_scan_chain_backward()
1458 			term = uvc_entity_by_id(chain->dev, id);  in uvc_scan_chain_backward()
1469 			list_add_tail(&term->chain, &chain->entities);  in uvc_scan_chain_backward()
1470 			uvc_scan_chain_forward(chain, term, entity);  in uvc_scan_chain_backward()
1495 	entity = uvc_entity_by_id(chain->dev, id);  in uvc_scan_chain_backward()
1506 static int uvc_scan_chain(struct uvc_video_chain *chain,  in uvc_scan_chain()  argument
1518 		if (entity->chain.next || entity->chain.prev) {  in uvc_scan_chain()
1525 		if (uvc_scan_chain_entity(chain, entity) < 0)  in uvc_scan_chain()
1529 		if (uvc_scan_chain_forward(chain, entity, prev) < 0)  in uvc_scan_chain()
1534 		if (uvc_scan_chain_backward(chain, &entity) < 0)  in uvc_scan_chain()
1548 	list_for_each_entry(term, terms, chain) {  in uvc_print_terms()
1565 static const char *uvc_print_chain(struct uvc_video_chain *chain)  in uvc_print_chain()  argument
1570 	p += uvc_print_terms(&chain->entities, UVC_TERM_INPUT, p);  in uvc_print_chain()
1572 	uvc_print_terms(&chain->entities, UVC_TERM_OUTPUT, p);  in uvc_print_chain()
1584 	struct uvc_video_chain *chain;  in uvc_scan_device()  local
1596 		if (term->chain.next || term->chain.prev)  in uvc_scan_device()
1599 		chain = kzalloc(sizeof(*chain), GFP_KERNEL);  in uvc_scan_device()
1600 		if (chain == NULL)  in uvc_scan_device()
1603 		INIT_LIST_HEAD(&chain->entities);  in uvc_scan_device()
1604 		mutex_init(&chain->ctrl_mutex);  in uvc_scan_device()
1605 		chain->dev = dev;  in uvc_scan_device()
1606 		v4l2_prio_init(&chain->prio);  in uvc_scan_device()
1610 		if (uvc_scan_chain(chain, term) < 0) {  in uvc_scan_device()
1611 			kfree(chain);  in uvc_scan_device()
1616 			  uvc_print_chain(chain));  in uvc_scan_device()
1618 		list_add_tail(&chain->list, &dev->chains);  in uvc_scan_device()
1661 		struct uvc_video_chain *chain;  in uvc_delete()  local
1662 		chain = list_entry(p, struct uvc_video_chain, list);  in uvc_delete()
1663 		kfree(chain);  in uvc_delete()
1764 	vdev->prio = &stream->chain->prio;  in uvc_register_video()
1782 		stream->chain->caps |= V4L2_CAP_VIDEO_CAPTURE;  in uvc_register_video()
1784 		stream->chain->caps |= V4L2_CAP_VIDEO_OUTPUT;  in uvc_register_video()
1794 	struct uvc_video_chain *chain)  in uvc_register_terms()  argument
1800 	list_for_each_entry(term, &chain->entities, chain) {  in uvc_register_terms()
1811 		stream->chain = chain;  in uvc_register_terms()
1824 	struct uvc_video_chain *chain;  in uvc_register_chains()  local
1827 	list_for_each_entry(chain, &dev->chains, list) {  in uvc_register_chains()
1828 		ret = uvc_register_terms(dev, chain);  in uvc_register_chains()
1833 		ret = uvc_mc_register_entities(chain);  in uvc_register_chains()