Re: Mainline UML Rust stable io.rs unused imports

["Danilo Krummrich" <dakr@kernel.org>]

On Sun Feb 15, 2026 at 1:47 PM CET, Miguel Ojeda wrote:
> Hi all,
>
> In mainline and next, for UML with Rust stable (but not with Rust
> minimum), I am seeing:

I think the problem is not UML specific, it is about define_read!() and
define_write!() being crate public, while the only user is PCI.

So, if CONFIG_PCI=n, we get this warning.

I will send a fix soon.

Thanks for reporting!

- Danilo

>
>       RUSTC L rust/kernel.o - due to target missing
>     error: unused import: `define_read`
>        --> rust/kernel/io.rs:229:16
>         |
>     229 | pub(crate) use define_read;
>         |                ^^^^^^^^^^^
>         |
>         = note: `-D unused-imports` implied by `-D warnings`
>         = help: to override `-D warnings` add `#[allow(unused_imports)]`
>
>     error: unused import: `define_write`
>        --> rust/kernel/io.rs:262:16
>         |
>     262 | pub(crate) use define_write;
>         |                ^^^^^^^^^^^
>
> Cheers,
> Miguel