linux-kernel - Re: [PATCH 2/2] rust: device: implement Device::as

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Message-ID: <2025071411-casually-cold-6aff@gregkh>
Date: Mon, 14 Jul 2025 07:30:34 +0200
From: Greg KH <gregkh@...uxfoundation.org>
To: Danilo Krummrich <dakr@...nel.org>
Cc: rafael@...nel.org, ojeda@...nel.org, alex.gaynor@...il.com,
	boqun.feng@...il.com, gary@...yguo.net, bjorn3_gh@...tonmail.com,
	lossin@...nel.org, a.hindborg@...nel.org, aliceryhl@...gle.com,
	tmgross@...ch.edu, daniel.almeida@...labora.com,
	m.wilczynski@...sung.com, rust-for-linux@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] rust: device: implement Device::as_bound()

On Sun, Jul 13, 2025 at 08:26:54PM +0200, Danilo Krummrich wrote:
> Provide an unsafe functions for abstractions to convert a regular
> &Device to a &Device<Bound>.
> 
> This is useful for registrations that provide certain guarantees for the
> scope of their callbacks, such as IRQs or certain class device
> registrations (e.g. PWM, miscdevice).

Do we have an example where this can be used today in the tree, or is
this only for new stuff going forward that would use it?

thanks,

greg k-h