Re: [PATCH v6 3/6] rust: irq: add support for non-threaded IRQs and handlers

[Boqun Feng <boqun.feng@gmail.com>]

On Thu, Jul 03, 2025 at 04:30:01PM -0300, Daniel Almeida wrote:
[...]
> +#[pin_data]
> +pub struct Registration<T: Handler + 'static> {
> +    #[pin]
> +    inner: Devres<RegistrationInner>,
> +
> +    #[pin]
> +    handler: T,

IIRC, as a certain point, we want this to be a `UnsafePinned<T>`, is
that requirement gone or we still need that but 1) `UnsafePinned` is not
available and 2) we can rely on the whole struct being !Unpin for the
address stability temporarily?

I think it was not a problem until we switched to `try_pin_init!()`
instead of `pin_init_from_closure()` because we then had to pass the
address of `handler` instead of the whole struct.

Since we certainly want to use `try_pin_init!()` and we certainly will
have `UnsafePinned`, I think we should just keep this as it is for now,
and add a TODO so that we can clean it up later when we have
`UnsafePinned`?

Thoughts?

Regards,
Boqun