From 832e8819556dd482772e48bd9db9a3e0563a9455 Mon Sep 17 00:00:00 2001
From: 3d-gussner <3d.gussner@gmail.com>
Date: Wed, 10 Mar 2021 17:46:19 +0100
Subject: [PATCH 1/2] Disable M120 M121

---
 Firmware/Marlin_main.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/Firmware/Marlin_main.cpp b/Firmware/Marlin_main.cpp
index 547f4e21..fd2a6e39 100755
--- a/Firmware/Marlin_main.cpp
+++ b/Firmware/Marlin_main.cpp
@@ -6967,19 +6967,21 @@ Sigma_Exit:
       lcd_setstatus(strchr_pointer + 5);
       break;*/
 
+#if 0 //Disable these for the time being
     /*!
-	### M120 - Enable endstops <a href="https://reprap.org/wiki/G-code#M120:_Enable_endstop_detection">M120: Enable endstop detection</a>
+    ### M120 - Enable endstops <a href="https://reprap.org/wiki/G-code#M120:_Enable_endstop_detection">M120: Enable endstop detection</a>
     */
     case 120:
       enable_endstops(true) ;
       break;
 
     /*!
-	### M121 - Disable endstops <a href="https://reprap.org/wiki/G-code#M121:_Disable_endstop_detection">M121: Disable endstop detection</a>
+    ### M121 - Disable endstops <a href="https://reprap.org/wiki/G-code#M121:_Disable_endstop_detection">M121: Disable endstop detection</a>
     */
     case 121:
       enable_endstops(false) ;
       break;
+#endif //0
 
     /*!
 	### M119 - Get endstop states <a href="https://reprap.org/wiki/G-code#M119:_Get_Endstop_Status">M119: Get Endstop Status</a>

From 6355458052f2be41e6e4ae038695920dae302192 Mon Sep 17 00:00:00 2001
From: 3d-gussner <3d.gussner@gmail.com>
Date: Thu, 11 Mar 2021 15:00:49 +0100
Subject: [PATCH 2/2] Add def `M120_M121_ENABLED` to `Configuration_adv.h`

---
 Firmware/Configuration_adv.h | 6 ++++++
 Firmware/Marlin_main.cpp     | 4 ++--
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/Firmware/Configuration_adv.h b/Firmware/Configuration_adv.h
index 75ac0be9..59590b6f 100644
--- a/Firmware/Configuration_adv.h
+++ b/Firmware/Configuration_adv.h
@@ -387,6 +387,12 @@ const unsigned int dropsegments=5; //everything with less than this number of st
  */
 #define EXTENDED_CAPABILITIES_REPORT
 
+/**
+ * Enable M120/M121 G-code commands
+ * 
+ */
+//#define M120_M121_ENABLED  //Be careful enabling and using these G-code commands.
+
 //===========================================================================
 //=============================  Define Defines  ============================
 //===========================================================================
diff --git a/Firmware/Marlin_main.cpp b/Firmware/Marlin_main.cpp
index fd2a6e39..fb61b872 100755
--- a/Firmware/Marlin_main.cpp
+++ b/Firmware/Marlin_main.cpp
@@ -6967,7 +6967,7 @@ Sigma_Exit:
       lcd_setstatus(strchr_pointer + 5);
       break;*/
 
-#if 0 //Disable these for the time being
+#ifdef M120_M121_ENABLED
     /*!
     ### M120 - Enable endstops <a href="https://reprap.org/wiki/G-code#M120:_Enable_endstop_detection">M120: Enable endstop detection</a>
     */
@@ -6981,7 +6981,7 @@ Sigma_Exit:
     case 121:
       enable_endstops(false) ;
       break;
-#endif //0
+#endif //M120_M121_ENABLED
 
     /*!
 	### M119 - Get endstop states <a href="https://reprap.org/wiki/G-code#M119:_Get_Endstop_Status">M119: Get Endstop Status</a>