Re: [PATCH 3/6] rust: add `bitfield!` macro

[Dirk Behme]

On 20/01/2026 13:37, Miguel Ojeda wrote:
> On Tue, Jan 20, 2026 at 12:45 PM Dirk Behme <dirk.behme@xxxxxxxxxxxx> wrote:
> > What have I missed?
>
> I think the patch is missing enabling the (already stable by now)
> feature. If you add it at the top of `rust/kernel/lib.rs`, does it
> work for you?

Yes :)

And I think we need the same for the doctests where it fails as well then:

error[E0747]: type provided when a constant was expected
    --> rust/doctests_kernel_generated.rs:2758:1
     |
2758 | / bitfield! {
2759 | |     pub struct Config(u8) {
2760 | |         3:0 nibble;
2761 | |     }
2762 | | }
     | |_^
     |
     = help: const arguments cannot yet be inferred with `_`
     = help: add `#![feature(generic_arg_infer)]` to the crate 
attributes to enable
     = note: this error originates in the macro `::kernel::bitfield` 
which comes from the expansion of the macro `bitfield` (in Nightly 
builds, run with -Z macro-backtrace for more info)

error[E0747]: type provided when a constant was expected
    --> rust/doctests_kernel_generated.rs:2846:1
     |
2846 | / bitfield! {
2847 | |     pub struct Control(u32) {
2848 | |         0:0 power => Power;
2849 | |     }
2850 | | }
     | |_^
     |
     = help: const arguments cannot yet be inferred with `_`
     = help: add `#![feature(generic_arg_infer)]` to the crate 
attributes to enable
     = note: this error originates in the macro `::kernel::bitfield` 
which comes from the expansion of the macro `bitfield` (in Nightly 
builds, run with -Z macro-backtrace for more info)

error[E0747]: type provided when a constant was expected
    --> rust/doctests_kernel_generated.rs:2934:41
     |
2934 |             Mode::Low => Bounded::<u32, _>::new::<0>(),
     |                                         ^
     |
     = help: const arguments cannot yet be inferred with `_`
     = help: add `#![feature(generic_arg_infer)]` to the crate 
attributes to enable

...


Thanks!

Dirk