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
  ...

6 files changed, 207 insertions, 7 deletions

diff --git a/Documentation/process/3.Early-stage.rst b/Documentation/process/3.Early-stage.rst
index af2c0af931d6..be00716071d4 100644
--- a/Documentation/process/3.Early-stage.rst
+++ b/Documentation/process/3.Early-stage.rst
@@ -178,7 +178,7 @@ matter is (1) kernel developers tend to be busy, (2) there is no shortage
 of people with grand plans and little code (or even prospect of code) to
 back them up, and (3) nobody is obligated to review or comment on ideas
 posted by others.  Beyond that, high-level designs often hide problems
-which are only reviewed when somebody actually tries to implement those
+which are only revealed when somebody actually tries to implement those
 designs; for that reason, kernel developers would rather see the code.
 
 If a request-for-comments posting yields little in the way of comments, do
diff --git a/Documentation/process/4.Coding.rst b/Documentation/process/4.Coding.rst
index 6df19943dd4d..26b106071364 100644
--- a/Documentation/process/4.Coding.rst
+++ b/Documentation/process/4.Coding.rst
@@ -307,7 +307,7 @@ variety of potential coding problems; it can also propose fixes for those
 problems.  Quite a few "semantic patches" for the kernel have been packaged
 under the scripts/coccinelle directory; running "make coccicheck" will run
 through those semantic patches and report on any problems found.  See
-Documentation/coccinelle.txt for more information.
+Documentation/dev-tools/coccinelle.rst for more information.
 
 Other kinds of portability errors are best found by compiling your code for
 other architectures.  If you do not happen to have an S/390 system or a
diff --git a/Documentation/process/index.rst b/Documentation/process/index.rst
index 61e43cc3ed17..a430f6eee756 100644
--- a/Documentation/process/index.rst
+++ b/Documentation/process/index.rst
@@ -26,6 +26,7 @@ Below are the essential guides that every developer should read.
    coding-style
    email-clients
    kernel-enforcement-statement
+   kernel-driver-statement
 
 Other guides to the community that are of interest to most developers are: 
 
diff --git a/Documentation/process/kernel-driver-statement.rst b/Documentation/process/kernel-driver-statement.rst
new file mode 100644
index 000000000000..60d9d868f300
--- /dev/null
+++ b/Documentation/process/kernel-driver-statement.rst
@@ -0,0 +1,199 @@
+Kernel Driver Statement
+-----------------------
+
+Position Statement on Linux Kernel Modules
+==========================================
+
+
+We, the undersigned Linux kernel developers, consider any closed-source
+Linux kernel module or driver to be harmful and undesirable. We have
+repeatedly found them to be detrimental to Linux users, businesses, and
+the greater Linux ecosystem. Such modules negate the openness,
+stability, flexibility, and maintainability of the Linux development
+model and shut their users off from the expertise of the Linux
+community. Vendors that provide closed-source kernel modules force their
+customers to give up key Linux advantages or choose new vendors.
+Therefore, in order to take full advantage of the cost savings and
+shared support benefits open source has to offer, we urge vendors to
+adopt a policy of supporting their customers on Linux with open-source
+kernel code.
+
+We speak only for ourselves, and not for any company we might work for
+today, have in the past, or will in the future.
+
+ - Dave Airlie
+ - Nick Andrew
+ - Jens Axboe
+ - Ralf Baechle
+ - Felipe Balbi
+ - Ohad Ben-Cohen
+ - Muli Ben-Yehuda
+ - Jiri Benc
+ - Arnd Bergmann
+ - Thomas Bogendoerfer
+ - Vitaly Bordug
+ - James Bottomley
+ - Josh Boyer
+ - Neil Brown
+ - Mark Brown
+ - David Brownell
+ - Michael Buesch
+ - Franck Bui-Huu
+ - Adrian Bunk
+ - François Cami
+ - Ralph Campbell
+ - Luiz Fernando N. Capitulino
+ - Mauro Carvalho Chehab
+ - Denis Cheng
+ - Jonathan Corbet
+ - Glauber Costa
+ - Alan Cox
+ - Magnus Damm
+ - Ahmed S. Darwish
+ - Robert P. J. Day
+ - Hans de Goede
+ - Arnaldo Carvalho de Melo
+ - Helge Deller
+ - Jean Delvare
+ - Mathieu Desnoyers
+ - Sven-Thorsten Dietrich
+ - Alexey Dobriyan
+ - Daniel Drake
+ - Alex Dubov
+ - Randy Dunlap
+ - Michael Ellerman
+ - Pekka Enberg
+ - Jan Engelhardt
+ - Mark Fasheh
+ - J. Bruce Fields
+ - Larry Finger
+ - Jeremy Fitzhardinge
+ - Mike Frysinger
+ - Kumar Gala
+ - Robin Getz
+ - Liam Girdwood
+ - Jan-Benedict Glaw
+ - Thomas Gleixner
+ - Brice Goglin
+ - Cyrill Gorcunov
+ - Andy Gospodarek
+ - Thomas Graf
+ - Krzysztof Halasa
+ - Harvey Harrison
+ - Stephen Hemminger
+ - Michael Hennerich
+ - Tejun Heo
+ - Benjamin Herrenschmidt
+ - Kristian Høgsberg
+ - Henrique de Moraes Holschuh
+ - Marcel Holtmann
+ - Mike Isely
+ - Takashi Iwai
+ - Olof Johansson
+ - Dave Jones
+ - Jesper Juhl
+ - Matthias Kaehlcke
+ - Kenji Kaneshige
+ - Jan Kara
+ - Jeremy Kerr
+ - Russell King
+ - Olaf Kirch
+ - Roel Kluin
+ - Hans-Jürgen Koch
+ - Auke Kok
+ - Peter Korsgaard
+ - Jiri Kosina
+ - Mariusz Kozlowski
+ - Greg Kroah-Hartman
+ - Michael Krufky
+ - Aneesh Kumar
+ - Clemens Ladisch
+ - Christoph Lameter
+ - Gunnar Larisch
+ - Anders Larsen
+ - Grant Likely
+ - John W. Linville
+ - Yinghai Lu
+ - Tony Luck
+ - Pavel Machek
+ - Matt Mackall
+ - Paul Mackerras
+ - Roland McGrath
+ - Patrick McHardy
+ - Kyle McMartin
+ - Paul Menage
+ - Thierry Merle
+ - Eric Miao
+ - Akinobu Mita
+ - Ingo Molnar
+ - James Morris
+ - Andrew Morton
+ - Paul Mundt
+ - Oleg Nesterov
+ - Luca Olivetti
+ - S.Çağlar Onur
+ - Pierre Ossman
+ - Keith Owens
+ - Venkatesh Pallipadi
+ - Nick Piggin
+ - Nicolas Pitre
+ - Evgeniy Polyakov
+ - Richard Purdie
+ - Mike Rapoport
+ - Sam Ravnborg
+ - Gerrit Renker
+ - Stefan Richter
+ - David Rientjes
+ - Luis R. Rodriguez
+ - Stefan Roese
+ - Francois Romieu
+ - Rami Rosen
+ - Stephen Rothwell
+ - Maciej W. Rozycki
+ - Mark Salyzyn
+ - Yoshinori Sato
+ - Deepak Saxena
+ - Holger Schurig
+ - Amit Shah
+ - Yoshihiro Shimoda
+ - Sergei Shtylyov
+ - Kay Sievers
+ - Sebastian Siewior
+ - Rik Snel
+ - Jes Sorensen
+ - Alexey Starikovskiy
+ - Alan Stern
+ - Timur Tabi
+ - Hirokazu Takata
+ - Eliezer Tamir
+ - Eugene Teo
+ - Doug Thompson
+ - FUJITA Tomonori
+ - Dmitry Torokhov
+ - Marcelo Tosatti
+ - Steven Toth
+ - Theodore Tso
+ - Matthias Urlichs
+ - Geert Uytterhoeven
+ - Arjan van de Ven
+ - Ivo van Doorn
+ - Rik van Riel
+ - Wim Van Sebroeck
+ - Hans Verkuil
+ - Horst H. von Brand
+ - Dmitri Vorobiev
+ - Anton Vorontsov
+ - Daniel Walker
+ - Johannes Weiner
+ - Harald Welte
+ - Matthew Wilcox
+ - Dan J. Williams
+ - Darrick J. Wong
+ - David Woodhouse
+ - Chris Wright
+ - Bryan Wu
+ - Rafael J. Wysocki
+ - Herbert Xu
+ - Vlad Yasevich
+ - Peter Zijlstra
+ - Bartlomiej Zolnierkiewicz
diff --git a/Documentation/process/submitting-drivers.rst b/Documentation/process/submitting-drivers.rst
index afb82ee0cbea..b38bf2054ce3 100644
--- a/Documentation/process/submitting-drivers.rst
+++ b/Documentation/process/submitting-drivers.rst
@@ -117,7 +117,7 @@ PM support:
 		anything.  For the driver testing instructions see
 		Documentation/power/drivers-testing.txt and for a relatively
 		complete overview of the power management issues related to
-		drivers see Documentation/power/admin-guide/devices.rst .
+		drivers see Documentation/driver-api/pm/devices.rst.
 
 Control:
 		In general if there is active maintenance of a driver by
diff --git a/Documentation/process/submitting-patches.rst b/Documentation/process/submitting-patches.rst
index 733478ade91b..1ef19d3a3eee 100644
--- a/Documentation/process/submitting-patches.rst
+++ b/Documentation/process/submitting-patches.rst
@@ -621,14 +621,14 @@ The canonical patch subject line is::
 
 The canonical patch message body contains the following:
 
-  - A ``from`` line specifying the patch author (only needed if the person
-    sending the patch is not the author).
-
-  - An empty line.
+  - A ``from`` line specifying the patch author, followed by an empty
+    line (only needed if the person sending the patch is not the author).
 
   - The body of the explanation, line wrapped at 75 columns, which will
     be copied to the permanent changelog to describe this patch.
 
+  - An empty line.
+
   - The ``Signed-off-by:`` lines, described above, which will
     also go in the changelog.