linux-kernel - Re: [PATCH] rust: io: move MIN_SIZE and io_addr

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Message-Id: <DG3Y4BGXT6BZ.X2LXWHL7HYBY@kernel.org>
Date: Sun, 01 Feb 2026 22:33:41 +0100
From: "Danilo Krummrich" <dakr@...nel.org>
To: "Alexandre Courbot" <acourbot@...dia.com>
Cc: "Alice Ryhl" <aliceryhl@...gle.com>, "Daniel Almeida"
 <daniel.almeida@...labora.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>, "Trevor
 Gross" <tmgross@...ch.edu>, "Bjorn Helgaas" <bhelgaas@...gle.com>,
 Krzysztof Wilczyński <kwilczynski@...nel.org>, "Zhi Wang"
 <zhiw@...dia.com>, <driver-core@...ts.linux.dev>,
 <rust-for-linux@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
 <linux-pci@...r.kernel.org>
Subject: Re: [PATCH] rust: io: move MIN_SIZE and io_addr_assert to
 IoKnownSize

On Fri Jan 30, 2026 at 2:32 PM CET, Alexandre Courbot wrote:
> `MIN_SIZE` are `io_addr_assert` only ever used for IO types which
> implement `IoKnownSize` and do not make sense for types that don't.
>
> It looks like they should have been there since the beginning, so move
> them while the code is still fresh.
>
> Also update `IoKnownSize`'s documentation since it is not just a marker
> trait anymore.
>
> Fixes: 121d87b28e1d ("rust: io: separate generic I/O helpers from MMIO implementation")
> Signed-off-by: Alexandre Courbot <acourbot@...dia.com>

    [ Fix typo in commit message. - Danilo ]

Applied to driver-core-testing, thanks!