On Sun Mar 9, 2025 at 5:00 PM CET, Tamir Duberstein wrote:
In Rust 1.66.0, Clippy introduced the `as_ptr_cast_mut` lint [1]:
Since `as_ptr` takes a `&self`, the pointer won’t have write permissions unless interior mutability is used, making it unlikely that having it as a mutable pointer is correct.
There is only one affected callsite, and the change amounts to replacing `as _` with `.cast_mut().cast()`. This doesn't change the semantics, but is more descriptive of what's going on.
Apply this change and enable the lint -- no functional change intended.
Link: https://rust-lang.github.io/rust-clippy/master/index.html#as_ptr_cast_mut [1] Signed-off-by: Tamir Duberstein tamird@gmail.com
Reviewed-by: Benno Lossin benno.lossin@proton.me
--- Cheers, Benno
Makefile | 1 + rust/kernel/devres.rs | 2 +- 2 files changed, 2 insertions(+), 1 deletion(-)
diff --git a/Makefile b/Makefile index c62bae2b107b..bb15b86182a3 100644 --- a/Makefile +++ b/Makefile @@ -477,6 +477,7 @@ export rust_common_flags := --edition=2021 \ -Wrust_2018_idioms \ -Wunreachable_pub \ -Wclippy::all \
-Wclippy::as_ptr_cast_mut \ -Wclippy::ignored_unit_patterns \ -Wclippy::mut_mut \ -Wclippy::needless_bitwise_bool \diff --git a/rust/kernel/devres.rs b/rust/kernel/devres.rs index 3a9d998ec371..598001157293 100644 --- a/rust/kernel/devres.rs +++ b/rust/kernel/devres.rs @@ -143,7 +143,7 @@ fn remove_action(this: &Arc<Self>) { bindings::devm_remove_action_nowarn( this.dev.as_raw(), Some(this.callback),
this.as_ptr() as _,
this.as_ptr().cast_mut().cast(), ) };