linux-kernel - Re: [PATCH v2 3/6] rust: device: Support testing devices for equality

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Message-ID: <2026020338-gratitude-overplay-98b0@gregkh>
Date: Tue, 3 Feb 2026 17:17:28 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: Matthew Maurer <mmaurer@...gle.com>
Cc: Bjorn Andersson <andersson@...nel.org>,
	Konrad Dybcio <konradybcio@...nel.org>,
	Satya Durga Srinivasu Prabhala <satyap@...cinc.com>,
	Miguel Ojeda <ojeda@...nel.org>, Boqun Feng <boqun.feng@...il.com>,
	Gary Guo <gary@...yguo.net>,
	Björn Roy Baron <bjorn3_gh@...tonmail.com>,
	Benno Lossin <lossin@...nel.org>,
	Andreas Hindborg <a.hindborg@...nel.org>,
	Alice Ryhl <aliceryhl@...gle.com>, Trevor Gross <tmgross@...ch.edu>,
	Danilo Krummrich <dakr@...nel.org>,
	Daniel Almeida <daniel.almeida@...labora.com>,
	"Rafael J. Wysocki" <rafael@...nel.org>,
	David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
	Michal Wilczynski <m.wilczynski@...sung.com>,
	Dave Ertman <david.m.ertman@...el.com>,
	Ira Weiny <ira.weiny@...el.com>, Leon Romanovsky <leon@...nel.org>,
	Trilok Soni <tsoni@...cinc.com>, linux-kernel@...r.kernel.org,
	linux-arm-msm@...r.kernel.org, rust-for-linux@...r.kernel.org,
	driver-core@...ts.linux.dev, dri-devel@...ts.freedesktop.org,
	linux-pwm@...r.kernel.org
Subject: Re: [PATCH v2 3/6] rust: device: Support testing devices for equality

On Tue, Feb 03, 2026 at 03:46:32PM +0000, Matthew Maurer wrote:
> This allows device drivers to check if, for example, an auxiliary
> devices is one of its children by comparing the parent field, or
> checking if a device parameter is its own device.
> 
> Also convert existing `.as_raw() != .as_raw()` to  use this new
> implementation.

Ah, ok, I can see how getting rid of the as_raw() calls here is a "good
thing", but overall it's just the same code paths :)

And I don't see what patch in this series uses this, am I missing it?

thanks,

greg k-h