[PATCH v4 1/7] rust: hrtimer: Document the return value for HrTimerHandle::cancel()

[Lyude Paul <lyude@redhat.com>]

Just a drive-by fix I noticed: we don't actually document what the return
value from cancel() does, so do that.

Signed-off-by: Lyude Paul <lyude@redhat.com>

---
V4:
* Reword to "Returns `true` if the timer was running."

Signed-off-by: Lyude Paul <lyude@redhat.com>
---
 rust/kernel/time/hrtimer.rs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/rust/kernel/time/hrtimer.rs b/rust/kernel/time/hrtimer.rs
index 27243eaaf8ed7..ef96c7e2c21ff 100644
--- a/rust/kernel/time/hrtimer.rs
+++ b/rust/kernel/time/hrtimer.rs
@@ -304,6 +304,8 @@ pub unsafe trait HrTimerHandle {
     /// Note that the timer might be started by a concurrent start operation. If
     /// so, the timer might not be in the **stopped** state when this function
     /// returns.
+    ///
+    /// Returns `true` if the timer was running.
     fn cancel(&mut self) -> bool;
 }
 
-- 
2.48.1