[PATCH] rust: acpi: replace `core::mem::zeroed` with `pin_init::zeroed`

Siyuan Huang
2025-10-20T03:12:18Z

All types in `bindings` implement `Zeroable` if they can, so use
`pin_init::zeroed` instead of relying on `unsafe` code.

If this ends up not compiling in the future, something in bindgen or on
the C side changed and is most likely incorrect.

Link: https://github.com/Rust-for-Linux/linux/issues/1189
Suggested-by: Benno Lossin <lossin@kernel.org>
Signed-off-by: Siyuan Huang <huangsiyuan@kylinos.cn>
---
rust/kernel/acpi.rs | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/rust/kernel/acpi.rs b/rust/kernel/acpi.rs
index 7ae317368b00..f9488be9249c 100644
--- a/rust/kernel/acpi.rs
+++ b/rust/kernel/acpi.rs
@@ -42,9 +42,7 @@ pub const fn new(id: &'static CStr) -> Self {
"ID exceeds 16 bytes"
);
let src = id.as_bytes_with_nul();
- // Replace with `bindings::acpi_device_id::default()` once stabilized for `const`.
- // SAFETY: FFI type is valid to be zero-initialized.
- let mut acpi: bindings::acpi_device_id = unsafe { core::mem::zeroed() };
+ let mut acpi: bindings::acpi_device_id = pin_init::zeroed();
let mut i = 0;
while i < src.len() {
acpi.id[i] = src[i];
--
2.25.1