From e5ea9d200f0ab02ed26ed3cdd949b28495716657 Mon Sep 17 00:00:00 2001
From: Giuliano <3684609+GMagician@users.noreply.github.com>
Date: Sat, 14 Jul 2018 06:12:43 +0200
Subject: [PATCH] [2.0.x] fix kill printer (#11260)

This will fix kill message on dual printer with 0 alignment offset
---
 Marlin/src/module/motion.cpp | 30 ++++++++++++++++++------------
 1 file changed, 18 insertions(+), 12 deletions(-)

diff --git a/Marlin/src/module/motion.cpp b/Marlin/src/module/motion.cpp
index bf8e49dc1..53523f9b4 100644
--- a/Marlin/src/module/motion.cpp
+++ b/Marlin/src/module/motion.cpp
@@ -1369,28 +1369,34 @@ void homeaxis(const AxisEnum axis) {
     #if ENABLED(X_DUAL_ENDSTOPS)
       if (axis == X_AXIS) {
         const float adj = ABS(endstops.x_endstop_adj);
-        if (pos_dir ? (endstops.x_endstop_adj > 0) : (endstops.x_endstop_adj < 0)) stepper.set_x_lock(true); else stepper.set_x2_lock(true);
-        do_homing_move(axis, pos_dir ? -adj : adj);
-        stepper.set_x_lock(false);
-        stepper.set_x2_lock(false);
+        if (adj) {
+          if (pos_dir ? (endstops.x_endstop_adj > 0) : (endstops.x_endstop_adj < 0)) stepper.set_x_lock(true); else stepper.set_x2_lock(true);
+          do_homing_move(axis, pos_dir ? -adj : adj);
+          stepper.set_x_lock(false);
+          stepper.set_x2_lock(false);
+        }
       }
     #endif
     #if ENABLED(Y_DUAL_ENDSTOPS)
       if (axis == Y_AXIS) {
         const float adj = ABS(endstops.y_endstop_adj);
-        if (pos_dir ? (endstops.y_endstop_adj > 0) : (endstops.y_endstop_adj < 0)) stepper.set_y_lock(true); else stepper.set_y2_lock(true);
-        do_homing_move(axis, pos_dir ? -adj : adj);
-        stepper.set_y_lock(false);
-        stepper.set_y2_lock(false);
+        if (adj) {
+          if (pos_dir ? (endstops.y_endstop_adj > 0) : (endstops.y_endstop_adj < 0)) stepper.set_y_lock(true); else stepper.set_y2_lock(true);
+          do_homing_move(axis, pos_dir ? -adj : adj);
+          stepper.set_y_lock(false);
+          stepper.set_y2_lock(false);
+        }
       }
     #endif
     #if ENABLED(Z_DUAL_ENDSTOPS)
       if (axis == Z_AXIS) {
         const float adj = ABS(endstops.z_endstop_adj);
-        if (pos_dir ? (endstops.z_endstop_adj > 0) : (endstops.z_endstop_adj < 0)) stepper.set_z_lock(true); else stepper.set_z2_lock(true);
-        do_homing_move(axis, pos_dir ? -adj : adj);
-        stepper.set_z_lock(false);
-        stepper.set_z2_lock(false);
+        if (adj) {
+          if (pos_dir ? (endstops.z_endstop_adj > 0) : (endstops.z_endstop_adj < 0)) stepper.set_z_lock(true); else stepper.set_z2_lock(true);
+          do_homing_move(axis, pos_dir ? -adj : adj);
+          stepper.set_z_lock(false);
+          stepper.set_z2_lock(false);
+        }
       }
     #endif
     stepper.set_homing_dual_axis(false);