From de061ba5d1d1013ba3b118bf66c48ffc03399e8a Mon Sep 17 00:00:00 2001
From: DerAndere <26200979+DerAndere1@users.noreply.github.com>
Date: Mon, 30 Aug 2021 12:49:34 +0200
Subject: [PATCH] fix SAFE_POWER_PROTECT for LINEAR_AXES >= 4

---
 Marlin/src/core/types.h                      |  2 +-
 Marlin/src/feature/stepper_driver_safety.cpp | 24 +++++++++++++++++++-
 2 files changed, 24 insertions(+), 2 deletions(-)

diff --git a/Marlin/src/core/types.h b/Marlin/src/core/types.h
index 910ae872cc87..c70020977df1 100644
--- a/Marlin/src/core/types.h
+++ b/Marlin/src/core/types.h
@@ -377,7 +377,7 @@ template<typename T>
 struct XYZval {
   union {
     struct { T LINEAR_AXIS_LIST(x, y, z, i, j, k, m, o, p, q); };
-    struct { T LINEAR_AXIS_LIST(a, b, c, u, v, w, ax7, ax8, a9, ax10); };
+    struct { T LINEAR_AXIS_LIST(a, b, c, u, v, w, ax7, ax8, ax9, ax10); };
     T pos[LINEAR_AXES];
   };
 
diff --git a/Marlin/src/feature/stepper_driver_safety.cpp b/Marlin/src/feature/stepper_driver_safety.cpp
index 991f5a5906b4..1359580a846c 100644
--- a/Marlin/src/feature/stepper_driver_safety.cpp
+++ b/Marlin/src/feature/stepper_driver_safety.cpp
@@ -108,7 +108,7 @@ void stepper_driver_backward_check() {
 void stepper_driver_backward_report() {
   if (!axis_plug_backward) return;
 
-  auto _report_if_backward = [](PGM_P axis, uint8_t bit) {
+  auto _report_if_backward = [](PGM_P axis, axis_bit_t bit) {
     if (TEST(axis_plug_backward, bit))
       stepper_driver_backward_error(axis);
   };
@@ -142,6 +142,28 @@ void stepper_driver_backward_report() {
     REPORT_BACKWARD(Z4, 7);
   #endif
 
+  #if HAS_I_ENABLE
+    REPORT_BACKWARD(I, 0);
+  #endif
+  #if HAS_J_ENABLE
+    REPORT_BACKWARD(J, 0);
+  #endif
+  #if HAS_K_ENABLE
+    REPORT_BACKWARD(K, 0);
+  #endif
+  #if HAS_M_ENABLE
+    REPORT_BACKWARD(M, 0);
+  #endif
+  #if HAS_O_ENABLE
+    REPORT_BACKWARD(O, 0);
+  #endif
+  #if HAS_P_ENABLE
+    REPORT_BACKWARD(P, 0);
+  #endif
+  #if HAS_Q_ENABLE
+    REPORT_BACKWARD(Q, 0);
+  #endif
+
   #if HAS_E0_ENABLE
     REPORT_BACKWARD(E0, 8);
   #endif