1 files changed, 5 insertions, 0 deletions
diff --git a/rust/kernel/sync/atomic/internal.rs b/rust/kernel/sync/atomic/internal.rs
index e301db4eaf91..b762dbdf6d18 100644
--- a/rust/kernel/sync/atomic/internal.rs
+++ b/rust/kernel/sync/atomic/internal.rs
@@ -340,5 +340,10 @@ declare_and_impl_atomic_methods!(
             // SAFETY: `a.as_ptr()` is valid and properly aligned.
             unsafe { bindings::#call(v, a.as_ptr().cast()) }
         }
+
+        fn fetch_sub[acquire, release, relaxed](a: &AtomicRepr<Self>, v: Self::Delta) -> Self {
+            // SAFETY: `a.as_ptr()` guarantees the returned pointer is valid and properly aligned.
+            unsafe { bindings::#call(v, a.as_ptr().cast()) }
+        }
     }
 );