From 046c066c11b2f503966abc1cc468f2eaca4d82fa Mon Sep 17 00:00:00 2001
From: f4exb <f4exb06@gmail.com>
Date: Sat, 5 Jun 2021 19:46:39 +0200
Subject: [PATCH] ADS-B demod: ADSBDemodWorker: check running state before
 actual start/stop

---
 plugins/channelrx/demodadsb/adsbdemodworker.cpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/plugins/channelrx/demodadsb/adsbdemodworker.cpp b/plugins/channelrx/demodadsb/adsbdemodworker.cpp
index fe835c5a7..8b085f076 100644
--- a/plugins/channelrx/demodadsb/adsbdemodworker.cpp
+++ b/plugins/channelrx/demodadsb/adsbdemodworker.cpp
@@ -57,6 +57,11 @@ void ADSBDemodWorker::reset()
 bool ADSBDemodWorker::startWork()
 {
     QMutexLocker mutexLocker(&m_mutex);
+
+    if (m_running) {
+        return m_running;
+    }
+
     connect(&m_inputMessageQueue, SIGNAL(messageEnqueued()), this, SLOT(handleInputMessages()));
     m_heartbeatTimer.start(60*1000);
     m_running = true;
@@ -66,6 +71,11 @@ bool ADSBDemodWorker::startWork()
 void ADSBDemodWorker::stopWork()
 {
     QMutexLocker mutexLocker(&m_mutex);
+
+    if (!m_running) {
+        return;
+    }
+
     m_heartbeatTimer.stop();
     disconnect(&m_inputMessageQueue, SIGNAL(messageEnqueued()), this, SLOT(handleInputMessages()));
     m_running = false;