On Sun, Jan 22, 2017 at 6:18 AM, Robert P. J. Day [off-list ref] wrote:

  was perusing the UAPI content in the kernel source, prepping for a
course i'm teaching tomorrow, and just noticed there is a header file:

  $ find . -name mtd-user.h
  ./include/uapi/mtd/mtd-user.h
  $

which appears to be *entirely* unreferenced in the entire kernel code
base (outside of the Kbuild file that refers to it):

  $ grep -r 'mtd-user.h' *
  include/uapi/mtd/Kbuild:header-y += mtd-user.h
  $

Someone has a patch to remove msr-index.h which, in a similar way,
only ended up being exported because of a Kbuild rule.  So I'd imagine
this file would be a candidate for a similar patch.
https://lkml.org/lkml/2017/2/2/228.


-- 
Jim