fix racecheck warning in scanRows kernel

(cherry picked from commit fb15bdfb)

fix racecheck warning in scanRows kernel
(cherry picked from commit fb15bdfb)
fe1bd0cc · Vladislav Vinogradov · Alexander Smorkalov · a752f259 · fe1bd0cc
Commit fe1bd0cc authored Apr 23, 2015 by Vladislav Vinogradov Committed by Alexander Smorkalov May 06, 2015
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NPP_staging.cu modules/gpu/src/nvidia/NPP_staging/NPP_staging.cu +2 -1

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--- a/modules/gpu/src/nvidia/NPP_staging/NPP_staging.cu
+++ b/modules/gpu/src/nvidia/NPP_staging/NPP_staging.cu
@@ -280,7 +280,8 @@ __global__ void scanRows(T_in *d_src, Ncv32u texOffs, Ncv32u srcWidth, Ncv32u sr

    __shared__ T_out shmem[NUM_SCAN_THREADS * 2];
    __shared__ T_out carryElem;
-    carryElem = 0;
+    if (threadIdx.x == 0)
+        carryElem = 0;
    __syncthreads();

    while (numBuckets--)