From ea26be116ab1e93871ccbfbb1267137f4d0ce47f Mon Sep 17 00:00:00 2001
From: Tomi Valkeinen <tomi.valkeinen@ti.com>
Date: Fri, 10 Feb 2017 06:56:39 +0200
Subject: fix race issue in threaded test pattern draw

---
 kms++util/src/testpat.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/kms++util/src/testpat.cpp b/kms++util/src/testpat.cpp
index 519f960..6cb5d85 100644
--- a/kms++util/src/testpat.cpp
+++ b/kms++util/src/testpat.cpp
@@ -155,6 +155,10 @@ static void draw_test_pattern_impl(IMappedFramebuffer& fb)
 		return;
 	}
 
+	// Create the mmaps before starting the threads
+	for (unsigned i = 0; i < fb.num_planes(); ++i)
+		fb.map(0);
+
 	unsigned num_threads = thread::hardware_concurrency();
 	vector<thread> workers;
 
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