Modify according to @alalek.

7b3e3f69 · peng xiao · 3c2a8912 · 7b3e3f69
Commit 7b3e3f69 authored Sep 03, 2013 by peng xiao
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gemm.cpp modules/ocl/src/gemm.cpp +6 -3

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--- a/modules/ocl/src/gemm.cpp
+++ b/modules/ocl/src/gemm.cpp
@@ -81,11 +81,14 @@ static Mutex cs;

 void cv::ocl::clBlasSetup()
 {
-    AutoLock al(cs);
    if(!clBlasInitialized)
    {
-        openCLSafeCall(clAmdBlasSetup());
-        clBlasInitialized = true;
+        AutoLock al(cs);
+        if(!clBlasInitialized)
+        {
+            openCLSafeCall(clAmdBlasSetup());
+            clBlasInitialized = true;
+        }
    }
 }