Re: [PATCH v3 1/2] rust: irq: add support for request_irq()

[Danilo Krummrich <dakr@kernel.org>]

On Tue, Jun 03, 2025 at 12:09:05PM +0200, Danilo Krummrich wrote:
> Yes, we could solve this with a lock as well, but it would be an additional
> lock, just to maintain the current drop() semantics, which I don't see much
> value in.

If we want to keep the current drop() semantics we could use a completion
instead.

	// Devres::drop()
	revoke_nosync()
	complete()

	// devres_callback
	if !try_revoke() {
		// we end up here if try_revoke() indicates that the object was
		// revoked already
		wait_for_completion()
	}