Hi Uwe,
On Tue, 26 May 2026 at 16:17, Uwe Kleine-König (The Capable Hub)
<[email protected]> wrote:
> 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.
Thanks for your series!
> The dependencies in this series are as follows:
>
> - Patch #5 depends on #1, #2
s/5/6/?
> - 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,
s/5/6/?
> #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
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- [email protected]
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
