usbdevfs_ctrltransfer 1594 fs/compat_ioctl.c         struct usbdevfs_ctrltransfer __user *p;
usbdevfs_ctrltransfer  154 include/linux/usbdevice_fs.h #define USBDEVFS_CONTROL           _IOWR('U', 0, struct usbdevfs_ctrltransfer)