USBDEVFS_DROP_PRIVILEGES   15 Documentation/usb/usbdevfs-drop-permissions.c #define USBDEVFS_DROP_PRIVILEGES		_IOW('U', 30, __u32)
USBDEVFS_DROP_PRIVILEGES  220 include/uapi/linux/usbdevice_fs.h #define USBDEVFS_DROP_PRIVILEGES   _IOW('U', 30, __u32)
USBDEVFS_DROP_PRIVILEGES  220 tools/include/uapi/linux/usbdevice_fs.h #define USBDEVFS_DROP_PRIVILEGES   _IOW('U', 30, __u32)