[PATCH] sh: maple: add support for Visual Memory Card devices, andmake consequential changes to maple input drivers - 0/3 - v5

[Adrian McMenamin]

This series of patches adds support for the Dreamcast Visual Memory
Unit, reworking the maple bus code to ensure it supports asynchronous
reads and writes. A consequential amendment to the keyboard and joystick
drivers are also included.

This version (v5) fixes a memory leak in the VMU code that was present
when read or write requests timed out in v4. It also adds the joystick
fix.

The VMU is a 'smart' flash chip where access is controlled by a
microcontroller so that, for instance, flash erases appear to be
transparent to the end user. The VMU does, however, show typical
flash-type behaviour (eg phased writes) and the MTD layer and the chip
work well together (eg in the way they handle apparent hotplug events
during a block write).

This version tidies up some style issues raised with version 2.

Signed-off-by: Adrian McMenamin <adrian@xxxxxxxxxxxxxxxxx>
---
 drivers/input/joystick/maplecontrol.c |    4 +-
 drivers/input/keyboard/maple_keyb.c   |   40 +-
 drivers/mtd/maps/Kconfig              |   12 +-
 drivers/mtd/maps/Makefile             |    1 +
 drivers/mtd/maps/vmu-flash.c          |  827 +++++++++++++++++++++++++++++++++
 drivers/sh/maple/maple.c              |  463 ++++++++++---------
 include/linux/maple.h                 |   62 ++-
 7 files changed, 1142 insertions(+), 267 deletions(-)


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