usbdevfs_setinterface 1415 drivers/usb/core/devio.c 	struct usbdevfs_setinterface setintf;
usbdevfs_setinterface  192 include/uapi/linux/usbdevice_fs.h #define USBDEVFS_SETINTERFACE      _IOR('U', 4, struct usbdevfs_setinterface)
usbdevfs_setinterface  192 tools/include/uapi/linux/usbdevice_fs.h #define USBDEVFS_SETINTERFACE      _IOR('U', 4, struct usbdevfs_setinterface)