linux-kernel - Re: [PATCH v2 2/2] samples: rust: fwctl: add sample code for fwctl

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Message-ID: <20260122205806.GU1134360@nvidia.com>
Date: Thu, 22 Jan 2026 16:58:06 -0400
From: Jason Gunthorpe <jgg@...dia.com>
To: Zhi Wang <zhiw@...dia.com>
Cc: rust-for-linux@...r.kernel.org, linux-pci@...r.kernel.org,
	linux-kernel@...r.kernel.org, dakr@...nel.org, aliceryhl@...gle.com,
	bhelgaas@...gle.com, kwilczynski@...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,
	tmgross@...ch.edu, markus.probst@...teo.de, helgaas@...nel.org,
	cjia@...dia.com, smitra@...dia.com, ankita@...dia.com,
	aniketa@...dia.com, kwankhede@...dia.com, targupta@...dia.com,
	acourbot@...dia.com, joelagnelf@...dia.com, jhubbard@...dia.com,
	zhiwang@...nel.org, daniel.almeida@...labora.com
Subject: Re: [PATCH v2 2/2] samples: rust: fwctl: add sample code for fwctl

On Thu, Jan 22, 2026 at 10:42:31PM +0200, Zhi Wang wrote:
> This patch adds a sample Rust driver demonstrating the usage of the fwctl
> Rust abstractions. Add sample code for creating a FwCtl device, getting
> device info and issuing an RPC.
> 
> Cc: Danilo Krummrich <dakr@...nel.org>
> Cc: Jason Gunthorpe <jgg@...dia.com>
> Signed-off-by: Zhi Wang <zhiw@...dia.com>
> ---
>  samples/rust/Kconfig              |  11 +++
>  samples/rust/Makefile             |   1 +
>  samples/rust/rust_driver_fwctl.rs | 136 ++++++++++++++++++++++++++++++
>  3 files changed, 148 insertions(+)
>  create mode 100644 samples/rust/rust_driver_fwctl.rs

Is this normal for Rust? Can we delete it when a real driver is
merged?

I'm not so keen on sample drivers, I've spent far too much time lately
touching sample drivers that nobody ever uses :(

Jason