[PATCH v2 1/2] rust: workqueue: restrict delayed work to global wqs

[Alice Ryhl <aliceryhl@google.com>]

When a workqueue is shut down, delayed work that is pending but not
scheduled does not get properly cleaned up, so it's not safe to use
`enqueue_delayed` on a workqueue that might be destroyed. To fix this,
restricted `enqueue_delayed` to static queues.

Signed-off-by: Alice Ryhl <aliceryhl@google.com>
---
 rust/kernel/workqueue.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/rust/kernel/workqueue.rs b/rust/kernel/workqueue.rs
index 706e833e9702ba4ba9aa7756b0e1fa80079a63fc..901102a8bca54c9fb58655d80fc9624b4dfe1dc1 100644
--- a/rust/kernel/workqueue.rs
+++ b/rust/kernel/workqueue.rs
@@ -297,7 +297,7 @@ pub fn enqueue<W, const ID: u64>(&self, w: W) -> W::EnqueueOutput
     /// This may fail if the work item is already enqueued in a workqueue.
     ///
     /// The work item will be submitted using `WORK_CPU_UNBOUND`.
-    pub fn enqueue_delayed<W, const ID: u64>(&self, w: W, delay: Jiffies) -> W::EnqueueOutput
+    pub fn enqueue_delayed<W, const ID: u64>(&'static self, w: W, delay: Jiffies) -> W::EnqueueOutput
     where
         W: RawDelayedWorkItem<ID> + Send + 'static,
     {

-- 
2.51.2.1041.gc1ab5b90ca-goog