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

Danilo Krummrich
2025-07-12T21:24:10Z

On Thu Jul 3, 2025 at 9:30 PM CEST, Daniel Almeida wrote:
> +/// Callbacks for an IRQ handler.
> +pub trait Handler: Sync {
> + /// The hard IRQ handler.
> + ///
> + /// This is executed in interrupt context, hence all corresponding
> + /// limitations do apply.
> + ///
> + /// All work that does not necessarily need to be executed from
> + /// interrupt context, should be deferred to a threaded handler.
> + /// See also [`ThreadedRegistration`].
> + fn handle(&self) -> IrqReturn;
> +}

One thing I forgot, the IRQ handlers should have a &Device<Bound> argument,
i.e.:

fn handle(&self, dev: &Device<Bound>) -> IrqReturn

IRQ registrations naturally give us this guarantee, so we should take advantage
of that.

- Danilo