Re: [PATCH] rust: allow `clippy::as_underscore` in the generated bindings

[Miguel Ojeda]

On Sun, Sep 6, 2026 at 11:58 PM John Hubbard <jhubbard@xxxxxxxxxx> wrote:
>
> A CLIPPY=1 build emitted about 15000 `as _` conversion warnings, all of
> them in bindgen's generated output and none in hand-written code.
>
> bindgen 0.73 returns each bitfield read through a trailing `as _`, and
> 0.72 returns it through a transmute, which the lint ignores. The
> bindings and uapi crates allow `clippy::all` over the generated code.
> That group does not cover `clippy::as_underscore`, a restriction lint.
>
> The minimum supported bindgen is 0.71.1, and 0.72 does not emit the
> cast, so upstream CI may not see these warnings yet.
>
> Allow `clippy::as_underscore` by name in the bindings and uapi crates.
>
> Assisted-by: LLM
> Signed-off-by: John Hubbard <jhubbard@xxxxxxxxxx>

Thanks! Looks good to me.

We have been getting 0.73.0 and 0.73.1 fixed for a correctness issue I
noticed and I didn't see these yet -- I definitely recommend avoiding
those versions for kernel builds.

Cheers,
Miguel