[PATCH v2 0/7] ARCnet: remove outdated drivers and information and unused code; small cleanups and documentation improvements

[Ethan Nelson-Moore <enelsonmoore@gmail.com>]

v2 of this series is identical to v1, but with the patches reordered to
resolve a transient build failure. The description from v1 follows.

This patch series mainly removes the ISA and PCMCIA ARCnet drivers and
documentation for them and hardware they supported. While ARCnet is still used
in industrial environments, and cards are still manufactured, it is unlikely
anyone is still using it with ISA and PCMCIA cards. Removing these drivers
reduces future maintenance burden.

While updating the ARCnet documentation to remove references to the removed
drivers, I noticed that it contained thousands of lines of outdated and
irrelevant information (much of it so outdated that it would not even work on
modern kernels). I took the opportunity to remove this information and improve
the writing style slightly.

I noticed that the BUS_ALIGN macro was always defined to 1, which meant that the
custom arcnet_in/out/read/write* I/O macros were unnecessary. I expanded and
removed them to make the code more straightforwards.

I also corrected some typos and comments.

The first three patches are the same as those I posted on February 8th:
https://lore.kernel.org/all/20260209030649.54779-1-enelsonmoore@gmail.com/
https://lore.kernel.org/all/20260209033604.60033-1-enelsonmoore@gmail.com/
https://lore.kernel.org/all/20260209025442.50987-1-enelsonmoore@gmail.com/

Ethan Nelson-Moore (7):
  net: arcnet: com20020: remove misleading references to multicast
  net: arcnet: fix typos in comments
  net: arcnet: remove ISA and PCMCIA support; modernize documentation
  net: arcnet: remove code depending on nonexistent config option
  net: arcnet: expand unnecessary I/O abstraction macros
  docs: net: arcnet: remove outdated/irrelevant information; improve
    style
  net: arcnet: com20020-pci: avoid -Wformat-truncation warning

 .../admin-guide/kernel-parameters.txt         |   14 -
 Documentation/networking/arcnet-hardware.rst  | 2979 +----------------
 Documentation/networking/arcnet.rst           |  235 +-
 arch/mips/configs/mtx1_defconfig              |    4 -
 drivers/net/arcnet/Kconfig                    |   52 +-
 drivers/net/arcnet/Makefile                   |    5 -
 drivers/net/arcnet/arc-rimi.c                 |  386 ---
 drivers/net/arcnet/arcdevice.h                |   36 +-
 drivers/net/arcnet/com20020-isa.c             |  230 --
 drivers/net/arcnet/com20020-pci.c             |    9 +-
 drivers/net/arcnet/com20020.c                 |  107 +-
 drivers/net/arcnet/com20020.h                 |    6 +-
 drivers/net/arcnet/com20020_cs.c              |  330 --
 drivers/net/arcnet/com90io.c                  |  427 ---
 drivers/net/arcnet/com90xx.c                  |  716 ----
 drivers/net/arcnet/rfc1201.c                  |    2 +-
 16 files changed, 125 insertions(+), 5413 deletions(-)
 delete mode 100644 drivers/net/arcnet/arc-rimi.c
 delete mode 100644 drivers/net/arcnet/com20020-isa.c
 delete mode 100644 drivers/net/arcnet/com20020_cs.c
 delete mode 100644 drivers/net/arcnet/com90io.c
 delete mode 100644 drivers/net/arcnet/com90xx.c

-- 
2.43.0