From c28bfe76e4ba707775a205b0274710de7aa1e31c Mon Sep 17 00:00:00 2001 From: Miguel Ojeda Date: Wed, 4 Sep 2024 22:43:33 +0200 Subject: [PATCH] rust: enable `clippy::unnecessary_safety_comment` lint In Rust 1.67.0, Clippy added the `unnecessary_safety_comment` lint [1], which is the "inverse" of `undocumented_unsafe_blocks`: it finds places where safe code has a `// SAFETY` comment attached. The lint currently finds 3 places where we had such mistakes, thus it seems already quite useful. Thus clean those and enable it. Link: https://rust-lang.github.io/rust-clippy/master/index.html#/unnecessary_safety_comment [1] Reviewed-by: Alice Ryhl Reviewed-by: Trevor Gross Reviewed-by: Vincenzo Palazzo Tested-by: Gary Guo Reviewed-by: Gary Guo Link: https://lore.kernel.org/r/20240904204347.168520-6-ojeda@kernel.org Signed-off-by: Miguel Ojeda --- Makefile | 1 + rust/kernel/sync/arc.rs | 2 +- rust/kernel/workqueue.rs | 4 ++-- 3 files changed, 4 insertions(+), 3 deletions(-) diff --git a/Makefile b/Makefile index 9730b4c3f029..203f66154c14 100644 --- a/Makefile +++ b/Makefile @@ -458,6 +458,7 @@ export rust_common_flags := --edition=2021 \ -Wclippy::needless_continue \ -Wclippy::no_mangle_with_rust_abi \ -Wclippy::undocumented_unsafe_blocks \ + -Wclippy::unnecessary_safety_comment \ -Wrustdoc::missing_crate_level_docs KBUILD_HOSTCFLAGS := $(KBUILD_USERHOSTCFLAGS) $(HOST_LFS_CFLAGS) \ diff --git a/rust/kernel/sync/arc.rs b/rust/kernel/sync/arc.rs index 3021f30fd822..84c7cbfb096d 100644 --- a/rust/kernel/sync/arc.rs +++ b/rust/kernel/sync/arc.rs @@ -341,7 +341,7 @@ impl ForeignOwnable for Arc { } unsafe fn borrow<'a>(ptr: *const core::ffi::c_void) -> ArcBorrow<'a, T> { - // SAFETY: By the safety requirement of this function, we know that `ptr` came from + // By the safety requirement of this function, we know that `ptr` came from // a previous call to `Arc::into_foreign`. let inner = NonNull::new(ptr as *mut ArcInner).unwrap(); diff --git a/rust/kernel/workqueue.rs b/rust/kernel/workqueue.rs index 3b3f1dbe8192..10d2bc62e2cf 100644 --- a/rust/kernel/workqueue.rs +++ b/rust/kernel/workqueue.rs @@ -526,7 +526,7 @@ where T: HasWork, { unsafe extern "C" fn run(ptr: *mut bindings::work_struct) { - // SAFETY: The `__enqueue` method always uses a `work_struct` stored in a `Work`. + // The `__enqueue` method always uses a `work_struct` stored in a `Work`. let ptr = ptr as *mut Work; // SAFETY: This computes the pointer that `__enqueue` got from `Arc::into_raw`. let ptr = unsafe { T::work_container_of(ptr) }; @@ -573,7 +573,7 @@ where T: HasWork, { unsafe extern "C" fn run(ptr: *mut bindings::work_struct) { - // SAFETY: The `__enqueue` method always uses a `work_struct` stored in a `Work`. + // The `__enqueue` method always uses a `work_struct` stored in a `Work`. let ptr = ptr as *mut Work; // SAFETY: This computes the pointer that `__enqueue` got from `Arc::into_raw`. let ptr = unsafe { T::work_container_of(ptr) }; -- 2.20.1