From fd68ba0d642bca2bc40946dcba6ccefdcbde70e4 Mon Sep 17 00:00:00 2001
From: Russ Butler <c1728p9@gmail.com>
Date: Sun, 27 May 2018 13:15:00 -0500
Subject: [PATCH] Fix possible bug with SysTimer

Ensure the SysTimer isn't added to the timer list twice by adding
an extra call to remove() inside suspend().
---
 rtos/TARGET_CORTEX/SysTimer.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/rtos/TARGET_CORTEX/SysTimer.cpp b/rtos/TARGET_CORTEX/SysTimer.cpp
index 8d09532bf7..0a260ce45c 100644
--- a/rtos/TARGET_CORTEX/SysTimer.cpp
+++ b/rtos/TARGET_CORTEX/SysTimer.cpp
@@ -74,6 +74,7 @@ void SysTimer::suspend(uint32_t ticks)
 {
     core_util_critical_section_enter();
 
+    remove();
     schedule_tick(ticks);
     _suspend_time_passed = false;
     _suspended = true;