From b01a88a839c2ac1eec68442f6cddf0c0a887cfa7 Mon Sep 17 00:00:00 2001
From: Dario Nieuwenhuis <dirbaio@dirbaio.net>
Date: Tue, 29 Dec 2020 00:04:58 +0100
Subject: [PATCH] Do not run timer queue if no alarm is set.

---
 embassy/src/executor/mod.rs | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/embassy/src/executor/mod.rs b/embassy/src/executor/mod.rs
index c1ec3832a..845d94c2c 100644
--- a/embassy/src/executor/mod.rs
+++ b/embassy/src/executor/mod.rs
@@ -214,9 +214,11 @@ impl Executor {
     /// Runs the executor until the queue is empty.
     pub fn run(&self) {
         unsafe {
-            self.timer_queue.dequeue_expired(Instant::now(), |p| {
-                self.enqueue(p);
-            });
+            if self.alarm.is_some() {
+                self.timer_queue.dequeue_expired(Instant::now(), |p| {
+                    self.enqueue(p);
+                });
+            }
 
             self.run_queue.dequeue_all(|p| {
                 let header = &*p;