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Date: Fri, 24 Feb 2023 16:25:11 +0100
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Asahi Lina <lina@asahilina.net>
Cc: Miguel Ojeda <ojeda@kernel.org>, Alex Gaynor <alex.gaynor@gmail.com>,
	Wedson Almeida Filho <wedsonaf@gmail.com>,
	Boqun Feng <boqun.feng@gmail.com>, Gary Guo <gary@garyguo.net>,
	=?iso-8859-1?Q?Bj=F6rn?= Roy Baron <bjorn3_gh@protonmail.com>,
	Will Deacon <will@kernel.org>, Robin Murphy <robin.murphy@arm.com>,
	Joerg Roedel <joro@8bytes.org>, Hector Martin <marcan@marcan.st>,
	Sven Peter <sven@svenpeter.dev>, Arnd Bergmann <arnd@arndb.de>,
	"Rafael J. Wysocki" <rafael@kernel.org>,
	Alyssa Rosenzweig <alyssa@rosenzweig.io>,
	Neal Gompa <neal@gompa.dev>, rust-for-linux@vger.kernel.org,
	linux-kernel@vger.kernel.org, asahi@lists.linux.dev
Subject: Re: [PATCH 2/5] rust: device: Add a minimal RawDevice trait
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On Fri, Feb 24, 2023 at 11:44:59PM +0900, Asahi Lina wrote:
> On 2023/02/24 23:19, Greg Kroah-Hartman wrote:>> Can we see some users
> of this code posted so I can see how struct device
> >> is going to work in a rust driver?  That's the thing I worry most about
> >> the rust/C interaction here as we have two different ways of thinking
> >> about reference counts from the two worlds and putting them together is
> >> going to be "interesting", as can be seen here already.
> > 
> > Also, where are you getting your 'struct device' from in the first
> > place?  What bus is createing it and giving it to your rust driver?
> 
> That would be platform for my GPU driver, matched via OF compatible.

Ick, a platform device?  The GPU isn't on the PCI bus?  Wow, that's
horrid...