Re: [PATCH v13 2/3] rust: io: mem: add a generic iomem abstraction

["Danilo Krummrich" <dakr@kernel.org>]

On Tue Jul 15, 2025 at 10:12 AM CEST, Alice Ryhl wrote:
>> +        {
>> +            // SAFETY:
>> +            // - `res_start` and `size` are read from a presumably valid `struct resource`.
>> +            // - `size` is known not to be zero at this point.
>> +            unsafe { bindings::ioremap_np(res_start, size.try_into()?) }
>> +        } else {
>> +            // SAFETY:
>> +            // - `res_start` and `size` are read from a presumably valid `struct resource`.
>> +            // - `size` is known not to be zero at this point.
>> +            unsafe { bindings::ioremap(res_start, size.try_into()?) }
>
> I thought a bit more about this, and I think it's fine for these sizes to
> be converted with try_into()?.

Fine for me too, but we should add a comment with a TODO to get this straight
in the future.