Pull comedi uaccess cleanups from Al Viro:
 "Comedi compat ioctls done saner - killing the single biggest pile of
  __get_user/__put_user outside of arch/* in the process"

* 'uaccess.comedi' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  comedi: get rid of compat_alloc_user_space() mess in COMEDI_CMD{,TEST} compat
  comedi: do_cmd_ioctl(): lift copyin/copyout into the caller
  comedi: do_cmdtest_ioctl(): lift copyin/copyout into the caller
  comedi: lift copy_from_user() into callers of __comedi_get_user_cmd()
  comedi: get rid of compat_alloc_user_space() mess in COMEDI_INSNLIST compat
  comedi: get rid of compat_alloc_user_space() mess in COMEDI_INSN compat
  comedi: get rid of compat_alloc_user_space() mess in COMEDI_RANGEINFO compat
  comedi: get rid of compat_alloc_user_space() mess in COMEDI_CHANINFO compat
  comedi: get rid of indirection via translated_ioctl()
  comedi: move compat ioctl handling to native fops