fix bugs; test=develop

paddle/fluid/operators/cudnn_lstm_op.cu.cc

@@ -180,8 +180,7 @@ struct CudnnRNNCache {
 
 #if CUDNN_VERSION >= 6000
     CUDNN_ENFORCE(platform::dynload::cudnnSetRNNDescriptor_v6(
-        handle, rnn_desc_, hidden_size_, num_layers_, dropout_desc_,
+        handle, rnn_desc_, hidden_size_, num_layers_, dropout_desc_, CUDNN_LINEAR_INPUT,
-        CUDNN_LINEAR_INPUT,
         is_bidirec_ ? CUDNN_BIDIRECTIONAL : CUDNN_UNIDIRECTIONAL, CUDNN_LSTM,
         CUDNN_RNN_ALGO_STANDARD, CUDNN_DATA_FLOAT));
 #else

paddle/fluid/platform/dynload/cudnn.h

@@ -166,8 +166,7 @@ CUDNN_DNN_ROUTINE_EACH_R5(DECLARE_DYNAMIC_LOAD_CUDNN_WRAP)
 
 // APIs in R6
 #if CUDNN_VERSION >= 6000
-#define CUDNN_DNN_ROUTINE_EACH_R6(__macro)  \
+#define CUDNN_DNN_ROUTINE_EACH_R6(__macro) __macro(cudnnSetRNNDescriptor_v6);
-  __macro(cudnnSetRNNDescriptor_v6);
 CUDNN_DNN_ROUTINE_EACH_R6(DECLARE_DYNAMIC_LOAD_CUDNN_WRAP)
 #endif