[PATCH 00/26] sh: maple: cleanup and modernize input drivers

From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
To: Miquel Raynal <miquel.raynal@bootlin.com>,
	 Richard Weinberger <richard@nod.at>,
	Vignesh Raghavendra <vigneshr@ti.com>,
	 Yoshinori Sato <ysato@users.sourceforge.jp>,
	Rich Felker <dalias@libc.org>,
	 John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Florian Fuchs <fuchsfl@gmail.com>,
	 Adrian McMenamin <adrianmcmenamin@gmail.com>,
	linux-kernel@vger.kernel.org,  Dmitry Torokhov <dtor@mail.ru>,
	linux-input@vger.kernel.org,  linux-mtd@lists.infradead.org,
	linux-sh@vger.kernel.org
Subject: [PATCH 00/26] sh: maple: cleanup and modernize input drivers
Date: Fri, 03 Jul 2026 22:57:23 -0700	[thread overview]
Message-ID: <20260703-b4-maple-cleanup-v1-0-41e424964da5@gmail.com> (raw)

This series aims to modernize the Maple bus core and its input drivers
(keyboard, mouse, joystick/controller), addressing build failures, race
conditions, and coding style issues:

- fixes a build failure in vmu-flash.c due to missing include
- fixes keyboard press detection logic (eliminating a 1-poll delay and
  redundant press events)
- corrects D-pad axis limits and optimizes event reporting using
  branchless calculations
- implements open() and close() in maple_keyb so all Maple input drivers
  only poll when actively open
- introduces callback_mutex in the Maple bus core to avoid potential UAF
  when stopping/unbinding the drivers
- removes the unused driver field from struct maple_device (write-only
  since 2008) and eliminates the redundant maple_unsupported_device dummy
  driver
- implements standard bus-level probe() and remove() methods for the
  Maple bus
- converts all three Maple input drivers to use managed resources, and
  fixes style issues reported by checkpatch.

This compiles but has not been tested on real hardware.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---
Dmitry Torokhov (26):
      sh: maple: include linux/device.h in linux/maple.h
      Input: maple_keyb - fix key press detection
      Input: maplecontrol - only enable present axes
      Input: maplemouse - stop polling and clear callback on close
      Input: maplecontrol - stop polling and clear callback on close
      Input: maplecontrol - simplify maple_device retrieval in open/close
      Input: maple_keyb - implement open and close methods
      Input: maplemouse - remove redundant drvdata resetting
      Input: maple_keyb - remove redundant drvdata resetting
      Input: maplecontrol - remove redundant drvdata resetting
      Input: maplemouse - remove unused mdev->driver assignment
      Input: maplecontrol - remove unused mdev->driver assignment
      Input: maple_keyb - remove unused mdev->driver assignment
      mtd: maps: vmu-flash: remove unused mdev->driver assignment
      sh: maple: remove not needed maple_unsupported_device driver
      sh: maple: remove unused driver field from struct maple_device
      sh: maple: implement bus-level probe/remove
      sh: maple: introduce callback_mutex in maple_device
      Input: maple_keyb - remove redundant mutex and remove method
      Input: maple_keyb - convert to devm
      Input: maplemouse - convert to devm
      Input: maplecontrol - convert to devm
      Input: maple_keyb - fix style issues
      Input: maplemouse - fix style issues
      Input: maplecontrol - fix style issues
      Input: maple_keyb - remove redundant 'new' buffer from struct dc_kbd

 drivers/input/joystick/maplecontrol.c |  98 +++++++++------------------
 drivers/input/keyboard/maple_keyb.c   | 124 +++++++++++++---------------------
 drivers/input/mouse/maplemouse.c      |  55 ++++-----------
 drivers/mtd/maps/vmu-flash.c          |  15 ++--
 drivers/sh/maple/maple.c              |  61 ++++++++++-------
 include/linux/maple.h                 |   8 ++-
 6 files changed, 140 insertions(+), 221 deletions(-)
---
base-commit: 2b763db0c2763d6bf73d7d3e69665222d1f377cf
change-id: 20260628-b4-maple-cleanup-884682ae108b

Thanks.

-- 
Dmitry

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