Re: [PATCH] hwmon: pwm-fan: Add const to channels allocation type

[sashiko-bot@kernel.org]

> From: Kees Cook <kees+treewide@kernel.org>
> 
> In preparation for making the devm_kmalloc family of allocators type
> aware, we need to make sure that the returned type from the allocation
> matches the type of the variable being assigned. (Before, the allocator
> would always return "void *", which can be implicitly cast to any
> pointer type.)
> 
> The assigned type is "const struct hwmon_channel_info **", but the
> converted allocation type would be "struct hwmon_channel_info **", which
> is the same type without the const qualifier. As there is no general way
> to safely add const qualifiers, take the size from the assignment target
> instead. No change in allocation size results.
> 
> Build tested ARCH=x86_64 allmodconfig with GCC 16.2.0:
> drivers/hwmon/pwm-fan.o
> 
> Assisted-by: LLM coccinelle
> Signed-off-by: Kees Cook <kees+treewide@kernel.org>

Sashiko has reviewed this patch and found no issues. It looks great!

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Sashiko AI review · https://sashiko.dev/#/patchset/20260917211417.i.173-kees@kernel.org?part=1