From ab2bd58f5c14a986a991e1ec9e128213edba38f7 Mon Sep 17 00:00:00 2001
From: Peng Xiao <pengxiao@outlook.com>
Date: Mon, 28 Oct 2013 14:17:59 +0800
Subject: [PATCH] Fixed a missing barrier.

---
 modules/ocl/src/opencl/imgproc_canny.cl | 1 +
 1 file changed, 1 insertion(+)

diff --git a/modules/ocl/src/opencl/imgproc_canny.cl b/modules/ocl/src/opencl/imgproc_canny.cl
index 2e4451e..c0d6af3 100644
--- a/modules/ocl/src/opencl/imgproc_canny.cl
+++ b/modules/ocl/src/opencl/imgproc_canny.cl
@@ -553,6 +553,7 @@ edgesHysteresisGlobal
 
             if (subTaskIdx < portion)
                 pos = s_st[s_counter - 1 - subTaskIdx];
+            barrier(CLK_LOCAL_MEM_FENCE);
 
             if (lidx == 0)
                 s_counter -= portion;
-- 
2.7.4