From 7e2fffb194003a3338385c9ed4047361a3e01b68 Mon Sep 17 00:00:00 2001
From: Anatoly Baksheev <no@email>
Date: Sat, 6 Aug 2011 09:59:51 +0000
Subject: [PATCH] ticket #1280

---
 modules/gpu/src/initialization.cpp | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/modules/gpu/src/initialization.cpp b/modules/gpu/src/initialization.cpp
index 84da515513..b13c173a36 100644
--- a/modules/gpu/src/initialization.cpp
+++ b/modules/gpu/src/initialization.cpp
@@ -177,8 +177,16 @@ void cv::gpu::DeviceInfo::queryMemory(size_t&, size_t&) const { throw_nogpu(); }
 int cv::gpu::getCudaEnabledDeviceCount()
 {
     int count;
-    cudaSafeCall( cudaGetDeviceCount( &count ) );
-    return count;
+    cudaError_t error = cudaGetDeviceCount( &count );
+
+    if (error == cudaErrorInsufficientDriver)
+        return -1;
+
+    if (error == cudaErrorNoDevice)
+        return 0;
+
+    cudaSafeCall(error);
+    return count;  
 }