From 6a07a3a981281faafb2ff391473f43c7030fd3f8 Mon Sep 17 00:00:00 2001
From: Randy Mackay <rmackay9@yahoo.com>
Date: Thu, 21 Apr 2022 09:45:10 +0900
Subject: [PATCH] AP_IOMCU: convert_pin_number leaves input untouched on
 failure

---
 libraries/AP_IOMCU/AP_IOMCU.cpp | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/libraries/AP_IOMCU/AP_IOMCU.cpp b/libraries/AP_IOMCU/AP_IOMCU.cpp
index 8cfca628e3..786fbe6fde 100644
--- a/libraries/AP_IOMCU/AP_IOMCU.cpp
+++ b/libraries/AP_IOMCU/AP_IOMCU.cpp
@@ -1073,13 +1073,10 @@ bool AP_IOMCU::valid_GPIO_pin(uint8_t pin) const
 // convert external pin numbers 101 to 108 to internal 0 to 7
 bool AP_IOMCU::convert_pin_number(uint8_t& pin) const
 {
-    if (pin < 101) {
+    if (pin < 101 || pin > 108) {
         return false;
     }
     pin -= 101;
-    if (pin > 7) {
-        return false;
-    }
     return true;
 }