1528 static inline int handler_set_err(struct v4l2_ctrl_handler *hdl, int err)  in handler_set_err()  argument
1530 	if (hdl->error == 0)  in handler_set_err()
1531 		hdl->error = err;  in handler_set_err()
1536 int v4l2_ctrl_handler_init_class(struct v4l2_ctrl_handler *hdl,  in v4l2_ctrl_handler_init_class()  argument
1540 	mutex_init(&hdl->_lock);  in v4l2_ctrl_handler_init_class()
1541 	hdl->lock = &hdl->_lock;  in v4l2_ctrl_handler_init_class()
1542 	lockdep_set_class_and_name(hdl->lock, key, name);  in v4l2_ctrl_handler_init_class()
1543 	INIT_LIST_HEAD(&hdl->ctrls);  in v4l2_ctrl_handler_init_class()
1544 	INIT_LIST_HEAD(&hdl->ctrl_refs);  in v4l2_ctrl_handler_init_class()
1545 	hdl->nr_of_buckets = 1 + nr_of_controls_hint / 8;  in v4l2_ctrl_handler_init_class()
1546 	hdl->buckets = kvcalloc(hdl->nr_of_buckets, sizeof(hdl->buckets[0]),  in v4l2_ctrl_handler_init_class()
1548 	hdl->error = hdl->buckets ? 0 : -ENOMEM;  in v4l2_ctrl_handler_init_class()
1549 	v4l2_ctrl_handler_init_request(hdl);  in v4l2_ctrl_handler_init_class()
1550 	return hdl->error;  in v4l2_ctrl_handler_init_class()
1555 void v4l2_ctrl_handler_free(struct v4l2_ctrl_handler *hdl)  in v4l2_ctrl_handler_free()  argument
1561 	if (hdl == NULL || hdl->buckets == NULL)  in v4l2_ctrl_handler_free()
1564 	v4l2_ctrl_handler_free_request(hdl);  in v4l2_ctrl_handler_free()
1566 	mutex_lock(hdl->lock);  in v4l2_ctrl_handler_free()
1568 	list_for_each_entry_safe(ref, next_ref, &hdl->ctrl_refs, node) {  in v4l2_ctrl_handler_free()
1575 	list_for_each_entry_safe(ctrl, next_ctrl, &hdl->ctrls, node) {  in v4l2_ctrl_handler_free()
1582 	kvfree(hdl->buckets);  in v4l2_ctrl_handler_free()
1583 	hdl->buckets = NULL;  in v4l2_ctrl_handler_free()
1584 	hdl->cached = NULL;  in v4l2_ctrl_handler_free()
1585 	hdl->error = 0;  in v4l2_ctrl_handler_free()
1586 	mutex_unlock(hdl->lock);  in v4l2_ctrl_handler_free()
1587 	mutex_destroy(&hdl->_lock);  in v4l2_ctrl_handler_free()
1598 		struct v4l2_ctrl_handler *hdl, u32 id)  in find_private_ref()  argument
1603 	list_for_each_entry(ref, &hdl->ctrl_refs, node) {  in find_private_ref()
1619 struct v4l2_ctrl_ref *find_ref(struct v4l2_ctrl_handler *hdl, u32 id)  in find_ref()  argument
1628 		return find_private_ref(hdl, id);  in find_ref()
1629 	bucket = id % hdl->nr_of_buckets;  in find_ref()
1632 	if (hdl->cached && hdl->cached->ctrl->id == id)  in find_ref()
1633 		return hdl->cached;  in find_ref()
1636 	ref = hdl->buckets ? hdl->buckets[bucket] : NULL;  in find_ref()
1641 		hdl->cached = ref; /* cache it! */  in find_ref()
1646 struct v4l2_ctrl_ref *find_ref_lock(struct v4l2_ctrl_handler *hdl, u32 id)  in find_ref_lock()  argument
1650 	if (hdl) {  in find_ref_lock()
1651 		mutex_lock(hdl->lock);  in find_ref_lock()
1652 		ref = find_ref(hdl, id);  in find_ref_lock()
1653 		mutex_unlock(hdl->lock);  in find_ref_lock()
1659 struct v4l2_ctrl *v4l2_ctrl_find(struct v4l2_ctrl_handler *hdl, u32 id)  in v4l2_ctrl_find()  argument
1661 	struct v4l2_ctrl_ref *ref = find_ref_lock(hdl, id);  in v4l2_ctrl_find()
1668 int handler_new_ref(struct v4l2_ctrl_handler *hdl,  in handler_new_ref()  argument
1677 	int bucket = id % hdl->nr_of_buckets;	/* which bucket to use */  in handler_new_ref()
1688 	    id != class_ctrl && find_ref_lock(hdl, class_ctrl) == NULL)  in handler_new_ref()
1689 		if (!v4l2_ctrl_new_std(hdl, NULL, class_ctrl, 0, 0, 0, 0))  in handler_new_ref()
1690 			return hdl->error;  in handler_new_ref()
1692 	if (hdl->error)  in handler_new_ref()
1693 		return hdl->error;  in handler_new_ref()
1699 		return handler_set_err(hdl, -ENOMEM);  in handler_new_ref()
1707 	mutex_lock(hdl->lock);  in handler_new_ref()
1713 	if (list_empty(&hdl->ctrl_refs) || id > node2id(hdl->ctrl_refs.prev)) {  in handler_new_ref()
1714 		list_add_tail(&new_ref->node, &hdl->ctrl_refs);  in handler_new_ref()
1719 	list_for_each_entry(ref, &hdl->ctrl_refs, node) {  in handler_new_ref()
1733 	new_ref->next = hdl->buckets[bucket];  in handler_new_ref()
1734 	hdl->buckets[bucket] = new_ref;  in handler_new_ref()
1737 	if (ctrl->handler == hdl) {  in handler_new_ref()
1748 	mutex_unlock(hdl->lock);  in handler_new_ref()
1753 static struct v4l2_ctrl *v4l2_ctrl_new(struct v4l2_ctrl_handler *hdl,  in v4l2_ctrl_new()  argument
1772 	if (hdl->error)  in v4l2_ctrl_new()
1886 		handler_set_err(hdl, -ERANGE);  in v4l2_ctrl_new()
1891 		handler_set_err(hdl, err);  in v4l2_ctrl_new()
1897 		handler_set_err(hdl, -EINVAL);  in v4l2_ctrl_new()
1908 			handler_set_err(hdl, -EINVAL);  in v4l2_ctrl_new()
1933 		handler_set_err(hdl, -ENOMEM);  in v4l2_ctrl_new()
1939 	ctrl->handler = hdl;  in v4l2_ctrl_new()
1998 	if (handler_new_ref(hdl, ctrl, NULL, false, false)) {  in v4l2_ctrl_new()
2003 	mutex_lock(hdl->lock);  in v4l2_ctrl_new()
2004 	list_add_tail(&ctrl->node, &hdl->ctrls);  in v4l2_ctrl_new()
2005 	mutex_unlock(hdl->lock);  in v4l2_ctrl_new()
2009 struct v4l2_ctrl *v4l2_ctrl_new_custom(struct v4l2_ctrl_handler *hdl,  in v4l2_ctrl_new_custom()  argument
2037 		handler_set_err(hdl, -EINVAL);  in v4l2_ctrl_new_custom()
2041 	ctrl = v4l2_ctrl_new(hdl, cfg->ops, cfg->type_ops, cfg->id, name,  in v4l2_ctrl_new_custom()
2053 struct v4l2_ctrl *v4l2_ctrl_new_std(struct v4l2_ctrl_handler *hdl,  in v4l2_ctrl_new_std()  argument
2065 		handler_set_err(hdl, -EINVAL);  in v4l2_ctrl_new_std()
2068 	return v4l2_ctrl_new(hdl, ops, NULL, id, name, type,  in v4l2_ctrl_new_std()
2075 struct v4l2_ctrl *v4l2_ctrl_new_std_menu(struct v4l2_ctrl_handler *hdl,  in v4l2_ctrl_new_std_menu()  argument
2098 		handler_set_err(hdl, -EINVAL);  in v4l2_ctrl_new_std_menu()
2101 	return v4l2_ctrl_new(hdl, ops, NULL, id, name, type,  in v4l2_ctrl_new_std_menu()
2108 struct v4l2_ctrl *v4l2_ctrl_new_std_menu_items(struct v4l2_ctrl_handler *hdl,  in v4l2_ctrl_new_std_menu_items()  argument
2124 		handler_set_err(hdl, -EINVAL);  in v4l2_ctrl_new_std_menu_items()
2130 		handler_set_err(hdl, -EINVAL);  in v4l2_ctrl_new_std_menu_items()
2133 	return v4l2_ctrl_new(hdl, ops, NULL, id, name, type,  in v4l2_ctrl_new_std_menu_items()
2141 struct v4l2_ctrl *v4l2_ctrl_new_std_compound(struct v4l2_ctrl_handler *hdl,  in v4l2_ctrl_new_std_compound()  argument
2152 		handler_set_err(hdl, -EINVAL);  in v4l2_ctrl_new_std_compound()
2155 	return v4l2_ctrl_new(hdl, ops, NULL, id, name, type,  in v4l2_ctrl_new_std_compound()
2162 struct v4l2_ctrl *v4l2_ctrl_new_int_menu(struct v4l2_ctrl_handler *hdl,  in v4l2_ctrl_new_int_menu()  argument
2176 		handler_set_err(hdl, -EINVAL);  in v4l2_ctrl_new_int_menu()
2179 	return v4l2_ctrl_new(hdl, ops, NULL, id, name, type,  in v4l2_ctrl_new_int_menu()
2186 int v4l2_ctrl_add_handler(struct v4l2_ctrl_handler *hdl,  in v4l2_ctrl_add_handler()  argument
2195 	if (!hdl || !add || hdl == add)  in v4l2_ctrl_add_handler()
2197 	if (hdl->error)  in v4l2_ctrl_add_handler()
2198 		return hdl->error;  in v4l2_ctrl_add_handler()
2212 		ret = handler_new_ref(hdl, ctrl, NULL, from_other_dev, false);  in v4l2_ctrl_add_handler()
2455 int __v4l2_ctrl_handler_setup(struct v4l2_ctrl_handler *hdl)  in __v4l2_ctrl_handler_setup()  argument
2460 	if (hdl == NULL)  in __v4l2_ctrl_handler_setup()
2463 	lockdep_assert_held(hdl->lock);  in __v4l2_ctrl_handler_setup()
2465 	list_for_each_entry(ctrl, &hdl->ctrls, node)  in __v4l2_ctrl_handler_setup()
2468 	list_for_each_entry(ctrl, &hdl->ctrls, node) {  in __v4l2_ctrl_handler_setup()
2494 int v4l2_ctrl_handler_setup(struct v4l2_ctrl_handler *hdl)  in v4l2_ctrl_handler_setup()  argument
2498 	if (hdl == NULL)  in v4l2_ctrl_handler_setup()
2501 	mutex_lock(hdl->lock);  in v4l2_ctrl_handler_setup()
2502 	ret = __v4l2_ctrl_handler_setup(hdl);  in v4l2_ctrl_handler_setup()
2503 	mutex_unlock(hdl->lock);  in v4l2_ctrl_handler_setup()
2536 void v4l2_ctrl_handler_log_status(struct v4l2_ctrl_handler *hdl,  in v4l2_ctrl_handler_log_status()  argument
2543 	if (!hdl)  in v4l2_ctrl_handler_log_status()
2550 	mutex_lock(hdl->lock);  in v4l2_ctrl_handler_log_status()
2551 	list_for_each_entry(ctrl, &hdl->ctrls, node)  in v4l2_ctrl_handler_log_status()
2554 	mutex_unlock(hdl->lock);  in v4l2_ctrl_handler_log_status()
2558 int v4l2_ctrl_new_fwnode_properties(struct v4l2_ctrl_handler *hdl,  in v4l2_ctrl_new_fwnode_properties()  argument
2562 	if (hdl->error)  in v4l2_ctrl_new_fwnode_properties()
2563 		return hdl->error;  in v4l2_ctrl_new_fwnode_properties()
2581 		if (!v4l2_ctrl_new_std_menu(hdl, ctrl_ops,  in v4l2_ctrl_new_fwnode_properties()
2585 			return hdl->error;  in v4l2_ctrl_new_fwnode_properties()
2589 		if (!v4l2_ctrl_new_std(hdl, ctrl_ops,  in v4l2_ctrl_new_fwnode_properties()
2593 			return hdl->error;  in v4l2_ctrl_new_fwnode_properties()
2596 	return hdl->error;  in v4l2_ctrl_new_fwnode_properties()