MdeModulePkg/UdfDxe: Use compare operator for non-boolean comparisons

[mirror_edk2.git] / MdeModulePkg / Universal / DevicePathDxe / DevicePath.c

diff --git a/MdeModulePkg/Universal/DevicePathDxe/DevicePath.c b/MdeModulePkg/Universal/DevicePathDxe/DevicePath.c
index 3149184a34584abb1555b7856bc75a16fe9e9807..70f03bd27aa0e2cabd1df9b0ae9a743c214d98c6 100644 (file)
--- a/MdeModulePkg/Universal/DevicePathDxe/DevicePath.c
+++ b/MdeModulePkg/Universal/DevicePathDxe/DevicePath.c
@@ -2,8 +2,8 @@
   Device Path Driver to produce DevPathUtilities Protocol, DevPathFromText Protocol\r
   and DevPathToText Protocol.\r
 \r
-Copyright (c) 2006 - 2008, Intel Corporation. <BR>\r
-All rights reserved. This program and the accompanying materials\r
+Copyright (c) 2006 - 2013, Intel Corporation. All rights reserved.<BR>\r
+This program and the accompanying materials\r
 are licensed and made available under the terms and conditions of the BSD License\r
 which accompanies this distribution.  The full text of the license may be found at\r
 http://opensource.org/licenses/bsd-license.php\r
@@ -13,62 +13,65 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 \r
 **/\r
 \r
-#include "DevicePath.h"\r
+#include <Uefi.h>\r
+#include <Protocol/DevicePathUtilities.h>\r
+#include <Protocol/DevicePathToText.h>\r
+#include <Protocol/DevicePathFromText.h>\r
+#include <Library/UefiDriverEntryPoint.h>\r
+#include <Library/UefiBootServicesTableLib.h>\r
+#include <Library/DevicePathLib.h>\r
+#include <Library/PcdLib.h>\r
 \r
-EFI_HANDLE  mDevicePathHandle = NULL;\r
-\r
-GLOBAL_REMOVE_IF_UNREFERENCED const EFI_DEVICE_PATH_UTILITIES_PROTOCOL mDevicePathUtilities = {\r
-  GetDevicePathSizeProtocolInterface,\r
-  DuplicateDevicePathProtocolInterface,\r
-  AppendDevicePathProtocolInterface,\r
-  AppendDeviceNodeProtocolInterface,\r
-  AppendDevicePathInstanceProtocolInterface,\r
-  GetNextDevicePathInstanceProtocolInterface,\r
-  IsDevicePathMultiInstanceProtocolInterface,\r
-  CreateDeviceNodeProtocolInterface\r
+GLOBAL_REMOVE_IF_UNREFERENCED CONST EFI_DEVICE_PATH_UTILITIES_PROTOCOL mDevicePathUtilities = {\r
+  GetDevicePathSize,\r
+  DuplicateDevicePath,\r
+  AppendDevicePath,\r
+  AppendDevicePathNode,\r
+  AppendDevicePathInstance,\r
+  GetNextDevicePathInstance,\r
+  IsDevicePathMultiInstance,\r
+  CreateDeviceNode\r
 };\r
 \r
-GLOBAL_REMOVE_IF_UNREFERENCED const EFI_DEVICE_PATH_TO_TEXT_PROTOCOL   mDevicePathToText = {\r
+GLOBAL_REMOVE_IF_UNREFERENCED CONST EFI_DEVICE_PATH_TO_TEXT_PROTOCOL   mDevicePathToText = {\r
   ConvertDeviceNodeToText,\r
   ConvertDevicePathToText\r
 };\r
 \r
-GLOBAL_REMOVE_IF_UNREFERENCED const EFI_DEVICE_PATH_FROM_TEXT_PROTOCOL mDevicePathFromText = {\r
-  ConvertTextToDeviceNode,  \r
-  ConvertTextToDevicePath  \r
+GLOBAL_REMOVE_IF_UNREFERENCED CONST EFI_DEVICE_PATH_FROM_TEXT_PROTOCOL mDevicePathFromText = {\r
+  ConvertTextToDeviceNode,\r
+  ConvertTextToDevicePath\r
 };\r
 \r
-GLOBAL_REMOVE_IF_UNREFERENCED const EFI_GUID mEfiDevicePathMessagingUartFlowControlGuid = DEVICE_PATH_MESSAGING_UART_FLOW_CONTROL;\r
-GLOBAL_REMOVE_IF_UNREFERENCED const EFI_GUID mEfiDevicePathMessagingSASGuid             = DEVICE_PATH_MESSAGING_SAS;\r
+/**\r
+  The user Entry Point for DevicePath module.\r
+\r
+  This is the entry point for DevicePath module. It installs the UEFI Device Path Utility Protocol and\r
+  optionally the Device Path to Text and Device Path from Text protocols based on feature flags.\r
+\r
+  @param[in] ImageHandle    The firmware allocated handle for the EFI image.\r
+  @param[in] SystemTable    A pointer to the EFI System Table.\r
 \r
+  @retval EFI_SUCCESS       The entry point is executed successfully.\r
+  @retval Others            Some error occurs when executing this entry point.\r
+\r
+**/\r
 EFI_STATUS\r
 EFIAPI\r
 DevicePathEntryPoint (\r
   IN EFI_HANDLE           ImageHandle,\r
   IN EFI_SYSTEM_TABLE     *SystemTable\r
   )\r
-/*++\r
-\r
-  Routine Description:\r
-    Entry point for EFI drivers.\r
-\r
-  Arguments:\r
-   ImageHandle - EFI_HANDLE\r
-   SystemTable - EFI_SYSTEM_TABLE\r
-\r
-  Returns:\r
-    EFI_SUCCESS\r
-    others\r
-\r
---*/\r
 {\r
   EFI_STATUS  Status;\r
- \r
+  EFI_HANDLE  Handle;\r
+\r
+  Handle = NULL;\r
   Status = EFI_UNSUPPORTED;\r
   if (FeaturePcdGet (PcdDevicePathSupportDevicePathToText)) {\r
     if (FeaturePcdGet (PcdDevicePathSupportDevicePathFromText)) {\r
       Status = gBS->InstallMultipleProtocolInterfaces (\r
-                      &mDevicePathHandle,\r
+                      &Handle,\r
                       &gEfiDevicePathUtilitiesProtocolGuid, &mDevicePathUtilities,\r
                       &gEfiDevicePathToTextProtocolGuid,    &mDevicePathToText,\r
                       &gEfiDevicePathFromTextProtocolGuid,  &mDevicePathFromText,\r
@@ -76,7 +79,7 @@ DevicePathEntryPoint (
                       );\r
     } else {\r
       Status = gBS->InstallMultipleProtocolInterfaces (\r
-                      &mDevicePathHandle,\r
+                      &Handle,\r
                       &gEfiDevicePathUtilitiesProtocolGuid, &mDevicePathUtilities,\r
                       &gEfiDevicePathToTextProtocolGuid,    &mDevicePathToText,\r
                       NULL\r
@@ -85,14 +88,14 @@ DevicePathEntryPoint (
   } else {\r
     if (FeaturePcdGet (PcdDevicePathSupportDevicePathFromText)) {\r
       Status = gBS->InstallMultipleProtocolInterfaces (\r
-                      &mDevicePathHandle,\r
+                      &Handle,\r
                       &gEfiDevicePathUtilitiesProtocolGuid, &mDevicePathUtilities,\r
                       &gEfiDevicePathFromTextProtocolGuid,  &mDevicePathFromText,\r
                       NULL\r
                       );\r
     } else {\r
       Status = gBS->InstallMultipleProtocolInterfaces (\r
-                      &mDevicePathHandle,\r
+                      &Handle,\r
                       &gEfiDevicePathUtilitiesProtocolGuid, &mDevicePathUtilities,\r
                       NULL\r
                       );\r