diff --git a/src/operators/feed_op.h b/src/operators/feed_op.h
index 286b0076ef2b9ad806f141c4d6124f1233dc78dc..9b632034113bf5b627ba069a108f067b71a008b7 100644
--- a/src/operators/feed_op.h
+++ b/src/operators/feed_op.h
@@ -36,12 +36,12 @@ class FeedOp : public framework::OperatorBase<DeviceType> {
     out_dims[0] = param_.BatchSize();
     param_.Out()->Resize(out_dims);
   }
+  void Init() {}
 
 #ifdef PADDLE_MOBILE_FPGA
-  void RunImpl() const { fpga::PerformBypass(param_.FpgaArgs()); }
-  void Init() {
+  void RunImpl() const {
     const Tensor *input = param_.InputX();
-    auto input_ptr = (const_cast<Tensor *>(input))->mutable_data<float>();
+    auto input_ptr = input->data<float>();
     Tensor *output = param_.Out();
     auto output_ptr = output->mutable_data<half>();
     fpga::BypassArgs args;
@@ -52,12 +52,11 @@ class FeedOp : public framework::OperatorBase<DeviceType> {
     args.image.height = input->dims()[2];
     args.image.width = input->dims()[3];
     args.output.address = output_ptr;
-    param_.SetFpgaArgs(args);
+    fpga::PerformBypass(args);
   }
 
 #else
   void RunImpl() const { param_.Out()->ShareDataWith(*param_.InputX()); }
-  void Init() {}
 #endif
 
  protected:
diff --git a/src/operators/op_param.h b/src/operators/op_param.h
index 23d7d49ba9dab88b1b9a9c5656ad006cce6826f8..af8d35c9ecfb217c71fc024722608d8df28b5090 100644
--- a/src/operators/op_param.h
+++ b/src/operators/op_param.h
@@ -665,16 +665,6 @@ class FeedParam : public OpParam {
   Tensor *input_x_;
   Tensor *out_;
   int batch_size;
-
-#ifdef PADDLE_MOBILE_FPGA
-
- private:
-  fpga::BypassArgs fpga_bypass_args;
-
- public:
-  const fpga::BypassArgs &FpgaArgs() const { return fpga_bypass_args; }
-  void SetFpgaArgs(const fpga::BypassArgs &args) { fpga_bypass_args = args; }
-#endif
 };
 
 class FetchParam : public OpParam {
@@ -1133,7 +1123,6 @@ class FusionConvBNParam : public OpParam {
   FusionConvBNParam(const VariableNameMap &inputs,
                     const VariableNameMap &outputs, const AttributeMap &attrs,
                     const Scope &scope) {
-    axis_ = GetAttr<int>("axis", attrs);
     filter_ = FilterFrom<LoDTensor>(inputs, scope);
     input_ = InputFrom<LoDTensor>(inputs, scope);
     output_y_ = OutputYFrom<LoDTensor>(outputs, scope);
@@ -1150,8 +1139,6 @@ class FusionConvBNParam : public OpParam {
     //    is_test_ = GetAttr<bool>("is_test", attrs);
   }
 
-  const int &Axis() const { return axis_; }
-
   const Tensor *Input() const { return input_; }
 
 #ifdef PADDLE_MOBILE_FPGA
@@ -1192,7 +1179,6 @@ class FusionConvBNParam : public OpParam {
   const Tensor *NewBias() const { return new_bias_; }
 
  protected:
-  int axis_;
   Tensor *input_;
   Tensor *output_y_;
   Tensor *filter_;