[PATCH v4 1/4] rust: workqueue: impl Send and Sync for OwnedQueue

Allows OwnedQueue to be used across thread boundaries which is needed
from the tyr reset implementation.

Reviewed-by: Daniel Almeida <[email protected]>
Signed-off-by: Onur Özkan <[email protected]>
---
 rust/kernel/workqueue/mod.rs | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/rust/kernel/workqueue/mod.rs b/rust/kernel/workqueue/mod.rs
index 933032fc4a85..d766cd9b9175 100644
--- a/rust/kernel/workqueue/mod.rs
+++ b/rust/kernel/workqueue/mod.rs
@@ -383,6 +383,14 @@ pub struct OwnedQueue {
     queue: NonNull<Queue>,
 }
 
+// SAFETY: `OwnedQueue` has exclusive ownership of the workqueue and accesses to workqueues
+// are thread safe as documented by the `Send` implementation for `Queue`.
+unsafe impl Send for OwnedQueue {}
+
+// SAFETY: Shared access to an `OwnedQueue` only provides shared access to its `Queue` which
+// is thread safe as documented by the `Sync` implementation for `Queue`.
+unsafe impl Sync for OwnedQueue {}
+
 impl Deref for OwnedQueue {
     type Target = Queue;
     fn deref(&self) -> &Queue {

-- 
2.51.2