From b3f8f97789426c1612609a9218f05eee2c86dc47 Mon Sep 17 00:00:00 2001
From: Tomas Kulhanek <tomas.kulhanek@stfc.ac.uk>
Date: Mon, 17 Dec 2018 11:54:19 +0000
Subject: UPDATE: return -1 in case of error

---
 Core/regularisers_GPU/PatchSelect_GPU_core.cu | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Core/regularisers_GPU/PatchSelect_GPU_core.cu b/Core/regularisers_GPU/PatchSelect_GPU_core.cu
index 74f59ca..d173124 100644
--- a/Core/regularisers_GPU/PatchSelect_GPU_core.cu
+++ b/Core/regularisers_GPU/PatchSelect_GPU_core.cu
@@ -397,7 +397,7 @@ extern "C" int PatchSelect_GPU_main(float *A, unsigned short *H_i, unsigned shor
     cudaGetDeviceCount(&deviceCount);
     if (deviceCount == 0) {
         fprintf(stderr, "No CUDA devices found\n");
-        return;
+        return -1;
     }  
       
     int SearchW_full, SimilW_full, counterG, i, j;
@@ -440,7 +440,7 @@ extern "C" int PatchSelect_GPU_main(float *A, unsigned short *H_i, unsigned shor
     else if (SearchWindow == 13)  IndexSelect2D_13_kernel<<<dimGrid,dimBlock>>>(Ad, H_i_d, H_j_d, Weights_d, Eucl_Vec_d, N, M, SearchWindow, SearchW_full, SimilarWin, NumNeighb, h2);
     else {
     fprintf(stderr, "Select the searching window size from 5, 7, 9, 11 or 13\n");
-        return;}    
+        return -1;}    
     checkCudaErrors(cudaPeekAtLastError() );        
     checkCudaErrors(cudaDeviceSynchronize());   
     /***************************************************************/    
-- 
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