Re: [PATCH] hwmon: pwm-fan: Add const to channels allocation type
From: Guenter Roeck
Date: Fri Sep 18 2026 - 11:35:42 EST
On Thu, Sep 17, 2026 at 02:14:18PM -0700, Kees Cook wrote:
> From: Kees Cook <kees+treewide@xxxxxxxxxx>
>
> 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@xxxxxxxxxx>
Applied.
Thanks,
Guenter