uvc_entity_by_id
source = uvc_entity_by_id(chain->dev,
term = uvc_entity_by_id(chain->dev, id);
entity = uvc_entity_by_id(chain->dev, id);
if (uvc_entity_by_id(dev, UVC_HARDWARE_ENTITY_ID(id)))
if (uvc_entity_by_id(dev, id))
remote = uvc_entity_by_id(chain->dev, entity->baSourceID[i]);
struct uvc_entity *uvc_entity_by_id(struct uvc_device *dev, int id);