usbdevfs_disconnectsignal 1647 fs/compat_ioctl.c         struct usbdevfs_disconnectsignal kdis;
usbdevfs_disconnectsignal  167 include/linux/usbdevice_fs.h #define USBDEVFS_DISCSIGNAL        _IOR('U', 14, struct usbdevfs_disconnectsignal)