From: Miguel Ojeda <ojeda@xxxxxxxxxx> commit c21bdb3d8a850afdfa4afe77eea39ae9533629b0 upstream. Starting with Rust 1.86.0 (currently in nightly, to be released on 2025-04-03), the `missing_abi` lint is warn-by-default [1]: error: extern declarations without an explicit ABI are deprecated --> rust/doctests_kernel_generated.rs:3158:1 | 3158 | extern { | ^^^^^^ help: explicitly specify the C ABI: `extern "C"` | = note: `-D missing-abi` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(missing_abi)]` Thus clean it up. Cc: <stable@xxxxxxxxxxxxxxx> # Needed in 6.12.y and 6.13.y only (Rust is pinned in older LTSs). Fixes: 7f8977a7fe6d ("rust: init: add `{pin_}chain` functions to `{Pin}Init<T, E>`") Link: https://github.com/rust-lang/rust/pull/132397 [1] Reviewed-by: Gary Guo <gary@xxxxxxxxxxx> Reviewed-by: Alice Ryhl <aliceryhl@xxxxxxxxxx> Reviewed-by: Fiona Behrens <me@xxxxxxxxxx> Link: https://lore.kernel.org/r/20250121200934.222075-1-ojeda@xxxxxxxxxx [ Added 6.13.y to Cc: stable tag. - Miguel ] Signed-off-by: Miguel Ojeda <ojeda@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- rust/kernel/init.rs | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/rust/kernel/init.rs +++ b/rust/kernel/init.rs @@ -788,7 +788,7 @@ pub unsafe trait PinInit<T: ?Sized, E = /// use kernel::{types::Opaque, init::pin_init_from_closure}; /// #[repr(C)] /// struct RawFoo([u8; 16]); - /// extern { + /// extern "C" { /// fn init_foo(_: *mut RawFoo); /// } /// Patches currently in stable-queue which might be from ojeda@xxxxxxxxxx are queue-6.6/rust-init-use-explicit-abi-to-clean-warning-in-future-compilers.patch