usbdevfs_streams  187 include/uapi/linux/usbdevice_fs.h #define USBDEVFS_ALLOC_STREAMS     _IOR('U', 28, struct usbdevfs_streams)
usbdevfs_streams  188 include/uapi/linux/usbdevice_fs.h #define USBDEVFS_FREE_STREAMS      _IOR('U', 29, struct usbdevfs_streams)