Merge tag 'docs-4.15' of git://git.lwn.net/linux

Pull documentation updates from Jonathan Corbet:
 "A relatively calm cycle for the docs tree again.

  - The old driver statement has been added to the kernel docs.

  - We have a couple of new helper scripts. find-unused-docs.sh from
    Sayli Karnic will point out kerneldoc comments that are not actually
    used in the documentation. Jani Nikula's
    documentation-file-ref-check finds references to non-existing files.

  - A new ftrace document from Steve Rostedt.

  - Vinod Koul converted the dmaengine docs to RST

  Beyond that, it's mostly simple fixes.

  This set reaches outside of Documentation/ a bit more than most. In
  all cases, the changes are to comment docs, mostly from Randy, in
  places where there didn't seem to be anybody better to take them"

* tag 'docs-4.15' of git://git.lwn.net/linux: (52 commits)
  documentation: fb: update list of available compiled-in fonts
  MAINTAINERS: update DMAengine documentation location
  dmaengine: doc: ReSTize pxa_dma doc
  dmaengine: doc: ReSTize dmatest doc
  dmaengine: doc: ReSTize client API doc
  dmaengine: doc: ReSTize provider doc
  dmaengine: doc: Add ReST style dmaengine document
  ftrace/docs: Add documentation on how to use ftrace from within the kernel
  bug-hunting.rst: Fix an example and a typo in a Sphinx tag
  scripts: Add a script to find unused documentation
  samples: Convert timers to use timer_setup()
  documentation: kernel-api: add more info on bitmap functions
  Documentation: fix selftests related file refs
  Documentation: fix ref to power basic-pm-debugging
  Documentation: fix ref to trace stm content
  Documentation: fix ref to coccinelle content
  Documentation: fix ref to workqueue content
  Documentation: fix ref to sphinx/kerneldoc.py
  Documentation: fix locking rt-mutex doc refs
  docs: dev-tools: correct Coccinelle version number
  ...

diff --cc Documentation/ABI/testing/sysfs-power
Simple merge

diff --cc Documentation/core-api/kernel-api.rst
Simple merge

diff --cc Documentation/process/index.rst
index 61e43cc3ed171e2371b6372609533dc16fc9b057,68454319f0067b3ea53d30ff50e35c736c67413e..a430f6eee7569570b8e81c5399c6a14dc3b4480c
--- 1/Documentation/process/index.rst
--- 2/Documentation/process/index.rst
+++ b/Documentation/process/index.rst
@@@ -25,7 -25,7 +25,8 @@@ Below are the essential guides that eve
     submitting-patches
     coding-style
     email-clients
 +   kernel-enforcement-statement
+    kernel-driver-statement
  
  Other guides to the community that are of interest to most developers are: 
  

diff --cc MAINTAINERS
Simple merge

diff --cc Makefile
Simple merge

diff --cc include/asm-generic/div64.h
Simple merge

diff --cc include/linux/bitmap.h
Simple merge

diff --cc include/linux/math64.h
Simple merge

diff --cc lib/div64.c
Simple merge