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rust: init: make #[pin_data] compatible with conditional compilation of fields

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This patch allows one to write
```
#[pin_data]
pub struct Foo {
    #[cfg(CONFIG_BAR)]
    a: Bar,
    #[cfg(not(CONFIG_BAR))]
    a: Baz,
}
```
Before, this would result in a compile error, because `#[pin_data]`
would generate two functions named `a` for both fields unconditionally.

Reviewed-by: Martin Rodriguez Reboredo <yakoyoku@gmail.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Signed-off-by: Benno Lossin <benno.lossin@proton.me>
Link: https://lore.kernel.org/r/20230814084602.25699-3-benno.lossin@proton.me
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
This commit is contained in:
Benno Lossin 2023-08-14 08:46:31 +00:00 committed by Miguel Ojeda
parent b3068ac37b
commit f8badd1507
1 changed files with 2 additions and 0 deletions
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2
rust/kernel/init/macros.rs
View file

@ -962,6 +962,7 @@ impl<$($impl_generics)*> $pin_data<$($ty_generics)*>
where $($whr)*
{
$(
$(#[$($p_attr)*])*
$pvis unsafe fn $p_field<E>(
self,
slot: *mut $p_type,
@ -971,6 +972,7 @@ impl<$($impl_generics)*> $pin_data<$($ty_generics)*>
}
)*
$(
$(#[$($attr)*])*
$fvis unsafe fn $field<E>(
self,
slot: *mut $type,