From ffe89240ff7133566994de511abcf8f51a76378f Mon Sep 17 00:00:00 2001
From: leonardozcm <leonardo1997zcm@gmail.com>
Date: Thu, 4 Jul 2024 17:00:33 +0800
Subject: [PATCH] pep8

---
 .../transformers/npu_models/linear.py         | 51 +++++++++++++++----
 1 file changed, 40 insertions(+), 11 deletions(-)

diff --git a/python/llm/src/ipex_llm/transformers/npu_models/linear.py b/python/llm/src/ipex_llm/transformers/npu_models/linear.py
index 38f4cb18140..9c9022e787e 100644
--- a/python/llm/src/ipex_llm/transformers/npu_models/linear.py
+++ b/python/llm/src/ipex_llm/transformers/npu_models/linear.py
@@ -1,3 +1,21 @@
+#
+# Copyright 2016 The BigDL Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# This file is adapted from
+# https://github.com/intel/intel-npu-acceleration-library/blob/main/intel_npu_acceleration_library/nn/linear.py
+
 #
 # Copyright © 2024 Intel Corporation
 # SPDX-License-Identifier: Apache 2.0
@@ -13,6 +31,8 @@
 import uuid
 import math
 
+from ipex_llm.utils.common import invalidInputError
+
 
 class Linear(torch.nn.Module):
     """Torch Linear operation NPU backend."""
@@ -22,7 +42,8 @@ def __init__(self, weight: torch.Tensor, bias: Optional[torch.Tensor] = None):
 
         Args:
             weight (torch.Tensor): Linear operation weight
-            bias (Optional[torch.Tensor], optional): Linear operation optional bias. Defaults to None.
+            bias (Optional[torch.Tensor], optional): Linear operation optional bias.
+                                                     Defaults to None.
         """
         super().__init__()
 
@@ -30,7 +51,6 @@ def __init__(self, weight: torch.Tensor, bias: Optional[torch.Tensor] = None):
         self.bias = torch.nn.Parameter(bias) if isinstance(bias, torch.Tensor) else None
         self.outC, self.inC = self.weight.shape
         self.op_id = str(uuid.uuid4())
-        # assert self.weight.dtype == torch.float16
         self._mm = AutogradMatMul.apply
 
     def forward(self, x: torch.Tensor) -> torch.Tensor:
@@ -100,9 +120,8 @@ def fromTensor(
             weights_quant, scale = quantize_tensor(weight)
             return QuantizedLinear(weights_quant, scale, bias)
         else:
-            raise RuntimeError(
-                f"intel-npu-acceleration-library library do not support yet the requeste datatype: {dtype}"
-            )
+            invalidInputError(False,
+                              f"NPU do not support yet the requeste datatype: {dtype}")
 
 
 class QuantizedLinear(torch.nn.Module):
@@ -119,7 +138,8 @@ def __init__(
         Args:
             weight (torch.Tensor): Linear operation weight
             scale (torch.Tensor): Quantization scale
-            bias (Optional[torch.Tensor], optional): Linear operation optional bias. Defaults to None.
+            bias (Optional[torch.Tensor], optional): Linear operation optional bias.
+                                                     Defaults to None.
 
         Raises:
             RuntimeError: Quantized weight must be in torch.int8 format
@@ -128,8 +148,12 @@ def __init__(
 
         self.weight = Parameter(weight, requires_grad=False)
         if self.weight.dtype not in (torch.int8, torch.uint8):
-            raise RuntimeError(
-                f"Quantized weight must be in torch.(u)int8 dtype instead of {self.weight.dtype}"
+            invalidInputError(
+                False,
+                (
+                    f"Quantized weight must be in torch.(u)int8"
+                    " dtype instead of {self.weight.dtype}"
+                )
             )
         self.outC, self.inC = self.weight.shape
         if self.weight.dtype == torch.uint8:
@@ -147,14 +171,19 @@ def forward(self, x: torch.Tensor) -> torch.Tensor:
             x (torch.Tensor): Input tensor
 
         Raises:
-            RuntimeError: Training is not supported for QuantizedLinear layer. Use `.eval()` to do inference only
+            RuntimeError: Training is not supported for QuantizedLinear layer.
+                          Use `.eval()` to do inference only
 
         Returns:
             torch.Tensor: result
         """
         if self.training:
-            raise RuntimeError(
-                "Training is not supported for QuantizedLinear layer. Use `.eval()` to do inference only"
+            invalidInputError(
+                False,
+                (
+                    "Training is not supported for QuantizedLinear layer."
+                    "Use `.eval()` to do inference only"
+                )
             )
         out = run_matmul(x, self.weight.data, self.scale.data, self.op_id)