fix compile error

paddle/fluid/platform/device_context.cc

@@ -145,9 +145,9 @@ class EigenCudaStreamDevice : public Eigen::StreamInterface {
 class CudnnHolder {
  public:
   CudnnHolder(const cudaStream_t* stream, const CUDAPlace& place)
-      : stream_(stream), place_(place), workspace_(nullptr), workspace_len_(0) {
+      : workspace_(nullptr), workspace_len_(0), stream_(stream), place_(place) {
     PADDLE_ENFORCE(dynload::cudnnCreate(&cudnn_handle_));
-    PADDLE_ENFORCE(dynload::cudnnSetStream(cudnn_handle_, stream_));
+    PADDLE_ENFORCE(dynload::cudnnSetStream(cudnn_handle_, *stream_));
   }
 
   cudnnHandle_t get_cudnn_handle() const { return cudnn_handle_; }
@@ -157,14 +157,14 @@ class CudnnHolder {
       void* new_workspace = paddle::memory::Alloc(place_, required_len);
       if (workspace_ != nullptr) {
         // Maybe someone is using the current workspace
-        PADDLE_ENFORCE(cudaStreamSynchronize(stream_));
+        PADDLE_ENFORCE(cudaStreamSynchronize(*stream_));
         PADDLE_ENFORCE(cudaGetLastError());
         paddle::memory::Free(place_, workspace_);
       }
       workspace_ = new_workspace;
       workspace_len_ = required_len;
     }
-    return workspace_
+    return workspace_;
   }
 
   ~CudnnHolder() { PADDLE_ENFORCE(dynload::cudnnDestroy(cudnn_handle_)); }
@@ -231,7 +231,7 @@ cudnnHandle_t CUDADeviceContext::cudnn_handle() const {
   return cudnn_holder_->get_cudnn_handle();
 }
 
-void* cudnn_workspace(size_t required_len) const {
+void* CUDADeviceContext::cudnn_workspace(size_t required_len) const {
   return cudnn_holder_->get_workspace(required_len);
 }
 

paddle/fluid/platform/device_context.h

@@ -69,7 +69,7 @@ struct DefaultDeviceContextType<platform::CPUPlace> {
 #ifdef PADDLE_WITH_CUDA
 
 class EigenCudaStreamDevice;
-class CUDNNHolder;
+class CudnnHolder;
 
 class CUDADeviceContext : public DeviceContext {
  public: