Re: [PATCH v3] rust: macros: improve `#[vtable]` documentation

From: Miguel Ojeda
Date: Wed Dec 13 2023 - 13:44:59 EST


On Thu, Oct 26, 2023 at 10:20 PM Benno Lossin <benno.lossin@xxxxxxxxx> wrote:
>
> Traits marked with `#[vtable]` need to provide default implementations
> for optional functions. The C side represents these with `NULL` in the
> vtable, so the default functions are never actually called. We do not
> want to replicate the default behavior from C in Rust, because that is
> not maintainable. Therefore we should use `build_error` in those default
> implementations. The error message for that is provided at
> `kernel::error::VTABLE_DEFAULT_ERROR`.
>
> Signed-off-by: Benno Lossin <benno.lossin@xxxxxxxxx>

Applied to `rust-next` (with the requested wrapping applied and
capitalized sentence).

Thanks everyone!

Cheers,
Miguel