[PATCH v1 0/8] zorro: Improve handling of pointers in zorro_device_id::driver_data

[Uwe Kleine-König (The Capable Hub)]

Hello,

this series is about improving the handling of pointers in struct
zorro_device_id's driver_data.

While it's ok on all current Linux platforms to store a pointer in an
unsigned long variable, it involves casting that loses type information.
This can be nicely seen in patch #7 where after profiting from patch #6
the compiler notices a missing const.

Preparing for that change, all zorro_device_ids are converted to use
named initializers, which is also a nice cleanup that could stand for
itself, as it improves readability for humans. (That is necessary
because an anonymous union can be initialized by name, but not using a
list initializer.)

My motivation for this series is the CHERI hardware extension. With that
pointers are bigger than longs and thus you cannot store pointers in
zorro_device_id::driver_data. So this series is also about getting
support for CHERI into the mainline, but I hope the clean up effects
mentioned above are justification enough to accept this series.

The dependencies in this series are as follows:

 - Patch #5 depends on #1, #2
 - Patches #7 and #8 depend on patch #6.

So if the ata maintainers agreed to merge their patch #1 via scsi, and
Geert agrees to patch #5 and that it's also merged via scsi, patches #1,
#2, #6 and #7 can go in without further coordination.

Patches #3, #4 and #5 are only about using the same initialization style
for all zorro_device_id and can go in without coordination.

Best regards
Uwe

Uwe Kleine-König (The Capable Hub) (8):
  ata: pata_budda: Use named initializer for zorro_device_id
  scsi: Use named initializer for zorro_device_id
  net: Use named initializer for zorro_device_id arrays
  i2c: icy: Use named initializer for zorro_device_id arrays
  video: fm2fb: Use named initializer for zorro_device_id array
  zorro: Simplify storing pointers in device id struct
  scsi: zorro7xx: Make use of struct zorro_device_id::driver_data_ptr
  video: cirrusfb: Make use of struct zorro_device_id::driver_data_ptr

 drivers/ata/pata_buddha.c             |  8 ++++----
 drivers/i2c/busses/i2c-icy.c          |  4 ++--
 drivers/net/ethernet/8390/hydra.c     |  4 ++--
 drivers/net/ethernet/8390/xsurf100.c  |  4 ++--
 drivers/net/ethernet/8390/zorro8390.c |  6 +++---
 drivers/net/ethernet/amd/a2065.c      |  8 ++++----
 drivers/net/ethernet/amd/ariadne.c    |  4 ++--
 drivers/scsi/a2091.c                  |  6 +++---
 drivers/scsi/gvp11.c                  | 17 ++++++++--------
 drivers/scsi/zorro7xx.c               | 16 +++++++--------
 drivers/scsi/zorro_esp.c              |  2 +-
 drivers/video/fbdev/cirrusfb.c        | 28 +++++++++++++--------------
 drivers/video/fbdev/fm2fb.c           |  6 +++---
 include/linux/mod_devicetable.h       |  6 +++++-
 14 files changed, 62 insertions(+), 57 deletions(-)


base-commit: d387b06f7c15b4639244ad66b4b0900c6a02b430
-- 
2.47.3