Re: [PATCH 00/12] iio: use designated initializers for acpi_device_id

[Joshua Crofts <joshua.crofts1@gmail.com>]

On Mon, 05 Oct 2026 15:01:56 +0100
Pawel Zalewski <pzalewski@thegoodpenguin.co.uk> wrote:

> This series is converting lists that contain the acpi_device_id struct,
> which is defined in the include/linux/device-id/acpi.h to make use of named
> initializers (which they do not use currently). This work is part of the on
> going effort in the kernel associated with device-ids [1]
> 
> The plan is to convert acpi_device_id::driver_data to have an anonymous
> union, similarly to what was introduced for PCI and I2C device ID tables.
> The goal is to increase type-safety (most of the existing casts are gone),
> to improve readability and to make use intent a bit more clear:
> 
> ```
> union {
> 	kernel_ulong_t driver_data;
> 	const void *driver_data_ptr;
> }
> ```
> 
> But for that to work all lists containing the structs need to use named
> initializers first to avoid triggering -Wmissing-braces. I already have
> patches that implement this and touching a lot of kernel subsystmes that
> use the acpi_device_id struct and that list keeps on growing. Therefore,
> I have decided to split the series per every subsystem into:
> - pre-clean-ups that convert the lists to use named initializers
>   (which is this series)
> - actual implementations that make some of the modules use the new
>   driver_data_ptr member
> 
> That way the task can be fragmented into manageable and independent chunks
> of work and makes this effort easier to review.
> 
> Tested builds on x86-64 and a64 in Yocto using 7.3-rc6.
> 
> [1] https://lore.kernel.org/all/cover.1780048925.git.u.kleine-koenig@baylibre.com/
> 
> Signed-off-by: Pawel Zalewski <pzalewski@thegoodpenguin.co.uk>
> ---

So I guess that's IIO done when it comes to C99 initializers.

Reviewed-by: Joshua Crofts <joshua.crofts1@gmail.com>

-- 
Kind regards,
Joshua Crofts