From 31df9b358de2a8ff30277e1fc7c5c6b182203a60 Mon Sep 17 00:00:00 2001
From: Christophe Paquot <christophe.paquot@amd.com>
Date: Thu, 19 Mar 2020 11:11:59 -0700
Subject: [PATCH] hipStreamAddCallback test seg faults

Change-Id: I1f107fc8a5c586cd571f0280ed8716c5f89d25b7
SWDEV-227875: Need to add a dummy marker in case the stream is empty.
---
 hipamd/vdi/hip_stream.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/hipamd/vdi/hip_stream.cpp b/hipamd/vdi/hip_stream.cpp
index 53311ae4ff..b66b525699 100644
--- a/hipamd/vdi/hip_stream.cpp
+++ b/hipamd/vdi/hip_stream.cpp
@@ -251,6 +251,11 @@ hipError_t hipStreamAddCallback(hipStream_t stream, hipStreamCallback_t callback
   amd::HostQueue* hostQueue = reinterpret_cast<hip::Stream*>
                               (stream)->asHostQueue();
   amd::Command* command = hostQueue->getLastQueuedCommand(true);
+  if (command == nullptr) {
+    amd::Command::EventWaitList eventWaitList;
+    command = new amd::Marker(*hostQueue, false, eventWaitList);
+    command->enqueue();
+  }
   amd::Event& event = command->event();
   StreamCallback* cbo = new StreamCallback(stream, callback, userData, command);