From b7813df3a155e4c2b11da305fa615004fba4481c Mon Sep 17 00:00:00 2001
From: Geoff Sim <geoffsim59@gmail.com>
Date: Mon, 16 Dec 2024 17:47:45 +0000
Subject: [PATCH] Drop MSP_VTX_CONFIG messages with an invalid VTX id

---
 src/msp_displayport.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/msp_displayport.c b/src/msp_displayport.c
index a343ffa..e535ed8 100644
--- a/src/msp_displayport.c
+++ b/src/msp_displayport.c
@@ -1055,6 +1055,11 @@ void parse_vtx_params(uint8_t isMSP_V2) {
         return;
     }
 
+    // Check for unknown VTX device  (probably from a device that is not interested in controlling the VTX directly)
+    if (msp_rx_buf[0] = 0xff) {
+        return;
+    }
+
     fc_pwr_rx = msp_rx_buf[3];
     if (fc_pwr_rx == 0) {
         fc_pwr_rx = POWER_MAX+2; // 0mW