Re: [PATCH v2] rust: kunit: fix warning when !CONFIG_PRINTK

[Alice Ryhl]

On Tue, Feb 24, 2026 at 07:37:56PM +0900, Alexandre Courbot wrote:
> If `CONFIG_PRINTK` is not set, then the following warnings are issued
> during build:
> 
>   warning: unused variable: `args`
>     --> ../rust/kernel/kunit.rs:16:12
>     |
>   16 | pub fn err(args: fmt::Arguments<'_>) {
>     |            ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
>     |
>     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
> 
>   warning: unused variable: `args`
>     --> ../rust/kernel/kunit.rs:32:13
>     |
>   32 | pub fn info(args: fmt::Arguments<'_>) {
>     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
> 
> Fix this by adding a no-op assignment using `args` when `CONFIG_PRINTK`
> is not set.
> 
> Fixes: a66d733da801 ("rust: support running Rust documentation tests as KUnit ones")
> Signed-off-by: Alexandre Courbot <acourbot@xxxxxxxxxx>

Reviewed-by: Alice Ryhl <aliceryhl@xxxxxxxxxx>