From d49501487817e7315af77effe4044d9c3848e07b Mon Sep 17 00:00:00 2001
From: "zhaosheng.tan" <1153614092@qq.com>
Date: Sat, 28 Feb 2026 11:13:07 +0800
Subject: [PATCH] mavlink: fix invalid param handle check in
 send_autopilot_capabilities

Fix logic error where `mnt_mode_in` (value) was checked against `PARAM_INVALID`
instead of `param_handle`. This caused `param_get` to be called with an invalid
handle if the parameter was missing.
---
 src/modules/mavlink/mavlink_main.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/modules/mavlink/mavlink_main.cpp b/src/modules/mavlink/mavlink_main.cpp
index cbc7793e8c..57ceab1467 100644
--- a/src/modules/mavlink/mavlink_main.cpp
+++ b/src/modules/mavlink/mavlink_main.cpp
@@ -1087,7 +1087,7 @@ Mavlink::send_autopilot_capabilities()
 			param_t param_handle = param_find_no_notification("MNT_MODE_IN");
 			int32_t mnt_mode_in = 0;
 
-			if (mnt_mode_in != PARAM_INVALID) {
+			if (param_handle != PARAM_INVALID) {
 				param_get(param_handle, &mnt_mode_in);
 
 				if (mnt_mode_in == 4) {