[PATCH v9 3/5] rust: Add missing SAFETY documentation for ARef example

[Oliver Mangold <oliver.mangold@pm.me>]

SAFETY comment in rustdoc example was just 'TODO'. Fixed.

Signed-off-by: Oliver Mangold <oliver.mangold@pm.me>
---
 rust/kernel/types.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/rust/kernel/types.rs b/rust/kernel/types.rs
index c8b78bcad259132808cc38c56b9f2bd525a0b755..db29f7c725e631c11099fa9122901ec2b3f4a039 100644
--- a/rust/kernel/types.rs
+++ b/rust/kernel/types.rs
@@ -492,7 +492,7 @@ pub unsafe fn from_raw(ptr: NonNull<T>) -> Self {
     ///
     /// struct Empty {}
     ///
-    /// # // SAFETY: TODO.
+    /// // SAFETY: We do not free anything.
     /// unsafe impl RefCounted for Empty {
     ///     fn inc_ref(&self) {}
     ///     unsafe fn dec_ref(_obj: NonNull<Self>) {}
@@ -500,7 +500,7 @@ pub unsafe fn from_raw(ptr: NonNull<T>) -> Self {
     ///
     /// let mut data = Empty {};
     /// let ptr = NonNull::<Empty>::new(&mut data).unwrap();
-    /// # // SAFETY: TODO.
+    /// // SAFETY: We keep `data` around longer than the `ARef`.
     /// let data_ref: ARef<Empty> = unsafe { ARef::from_raw(ptr) };
     /// let raw_ptr: NonNull<Empty> = ARef::into_raw(data_ref);
     ///

-- 
2.49.0