From ca58c703421a9dec014522d85ea763764e8fa21d Mon Sep 17 00:00:00 2001
From: Michael Zillgith <michael.zillgith@mz-automation.de>
Date: Fri, 25 Jun 2021 13:02:05 +0200
Subject: [PATCH] - MMS server: fixed data race bug in transmitBuffer handling
 (#338)

---
 src/mms/iso_mms/server/mms_server.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/mms/iso_mms/server/mms_server.c b/src/mms/iso_mms/server/mms_server.c
index cfed8824..c387cb8b 100644
--- a/src/mms/iso_mms/server/mms_server.c
+++ b/src/mms/iso_mms/server/mms_server.c
@@ -279,10 +279,11 @@ MmsServer_reserveTransmitBuffer(MmsServer self)
 void
 MmsServer_releaseTransmitBuffer(MmsServer self)
 {
+    self->transmitBuffer->size = 0;
+
 #if (CONFIG_MMS_THREADLESS_STACK != 1)
     Semaphore_post(self->transmitBufferMutex);
 #endif
-    self->transmitBuffer->size = 0;
 }
 
 #if (MMS_OBTAIN_FILE_SERVICE == 1)