fix: check if link is already popped when removing it inside the critical section

1 files changed, 3 insertions, 4 deletions

diff --git a/rtic-common/src/wait_queue.rs b/rtic-common/src/wait_queue.rs
index 4debcb9..8a3f80e 100644
--- a/rtic-common/src/wait_queue.rs
+++ b/rtic-common/src/wait_queue.rs
@@ -140,11 +140,10 @@ impl<T: Clone> Link<T> {
 
     /// Remove this link from a linked list.
     pub fn remove_from_list(&self, list: &DoublyLinkedList<T>) {
-        if self.is_popped() {
-            return;
-        }
-
         cs::with(|_| {
+            if self.is_popped() {
+                return;
+            }
             // Make sure all previous writes are visible
             core::sync::atomic::fence(Ordering::SeqCst);