From 366ff24941f4d18288d33230246fa4f23faa5822 Mon Sep 17 00:00:00 2001
From: Andrew Tridgell <andrew@tridgell.net>
Date: Mon, 20 Dec 2021 15:35:43 +1100
Subject: [PATCH] AP_RangeFinder: use have_serial when detecting

avoid find_serial() as it changes port options
---
 libraries/AP_RangeFinder/AP_RangeFinder_Backend_Serial.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libraries/AP_RangeFinder/AP_RangeFinder_Backend_Serial.cpp b/libraries/AP_RangeFinder/AP_RangeFinder_Backend_Serial.cpp
index fc618c6d32..cfacdb6ba1 100644
--- a/libraries/AP_RangeFinder/AP_RangeFinder_Backend_Serial.cpp
+++ b/libraries/AP_RangeFinder/AP_RangeFinder_Backend_Serial.cpp
@@ -53,7 +53,7 @@ uint32_t AP_RangeFinder_Backend_Serial::initial_baudrate(const uint8_t serial_in
 */
 bool AP_RangeFinder_Backend_Serial::detect(uint8_t serial_instance)
 {
-    return AP::serialmanager().find_serial(AP_SerialManager::SerialProtocol_Rangefinder, serial_instance) != nullptr;
+    return AP::serialmanager().have_serial(AP_SerialManager::SerialProtocol_Rangefinder, serial_instance);
 }