1 files changed, 10 insertions, 13 deletions
diff --git a/pkg/sleep/sleep_unsafe.go b/pkg/sleep/sleep_unsafe.go
index acbf0229b..65bfcf778 100644
--- a/pkg/sleep/sleep_unsafe.go
+++ b/pkg/sleep/sleep_unsafe.go
@@ -299,20 +299,17 @@ func (s *Sleeper) enqueueAssertedWaker(w *Waker) {
 		}
 	}
 
-	for {
-		// Nothing to do if there isn't a G waiting.
-		g := atomic.LoadUintptr(&s.waitingG)
-		if g == 0 {
-			return
-		}
+	// Nothing to do if there isn't a G waiting.
+	if atomic.LoadUintptr(&s.waitingG) == 0 {
+		return
+	}
 
-		// Signal to the sleeper that a waker has been asserted.
-		if atomic.CompareAndSwapUintptr(&s.waitingG, g, 0) {
-			if g != preparingG {
-				// We managed to get a G. Wake it up.
-				goready(g, 0)
-			}
-		}
+	// Signal to the sleeper that a waker has been asserted.
+	switch g := atomic.SwapUintptr(&s.waitingG, 0); g {
+	case 0, preparingG:
+	default:
+		// We managed to get a G. Wake it up.
+		goready(g, 0)
 	}
 }