From dc1113165601db4675036f52267f8489464107a1 Mon Sep 17 00:00:00 2001
From: Giuliano Zaro <3684609+GMagician@users.noreply.github.com>
Date: Tue, 25 Sep 2018 19:56:57 +0200
Subject: [PATCH] [2.0.x] fix possible race condition (#11923)

Fix some commits done in #11900
---
 Marlin/src/module/endstops.cpp | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/Marlin/src/module/endstops.cpp b/Marlin/src/module/endstops.cpp
index fb7a36ecb5..a7e2a57d6e 100644
--- a/Marlin/src/module/endstops.cpp
+++ b/Marlin/src/module/endstops.cpp
@@ -279,12 +279,11 @@ void Endstops::not_homing() {
     // Otherwise reset 'live's variables to let axes move in both directions.
     if (!enabled) {
       #if ENDSTOP_NOISE_THRESHOLD
-        endstop_poll_count = validated_live_state = 0; // Stop filtering
+        endstop_poll_count = 0;   // Stop filtering (MUST be done first to prevent race condition)
+        validated_live_state = 0;
       #endif
       live_state = 0;
     }
-  //#else
-    // When in polling endstops are always kept in sync
   #endif
 }