the value in exporting unused header files?

  as part of the output of yet another cleanup script i have, we
notice that:

$ grep -r if_wanpipe *
Documentation/networking/wan-router.txt:        if_wanpipe.h    WANPIPE Socket definitions
include/linux/Kbuild:unifdef-y += if_wanpipe.h
include/linux/if_wanpipe.h:* if_wanpipe.h       Header file for the Sangoma AF_WANPIPE Socket
$

  in other words, a header file that is not included by any other file
in the tree is still being exported to user space.  is that normal?

rday
-- 
========================================================================
Robert P. J. Day
Linux Consulting, Training and Annoying Kernel Pedantry
Waterloo, Ontario, CANADA

http://crashcourse.ca
========================================================================
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