Change BlockIo drivers to return EFI_NO_MEDIA or EFI_MEDIA_CHANGED even the Buffer...

[mirror_edk2.git] / MdeModulePkg / Bus / Scsi / ScsiDiskDxe / ScsiDisk.c

diff --git a/MdeModulePkg/Bus/Scsi/ScsiDiskDxe/ScsiDisk.c b/MdeModulePkg/Bus/Scsi/ScsiDiskDxe/ScsiDisk.c
index 3f6963ef198e41543158df291175c8677e0acfc2..fd63857a5e29db96b90ec27c9527edfedc5ad55c 100644 (file)
--- a/MdeModulePkg/Bus/Scsi/ScsiDiskDxe/ScsiDisk.c
+++ b/MdeModulePkg/Bus/Scsi/ScsiDiskDxe/ScsiDisk.c
@@ -1,7 +1,7 @@
 /** @file\r
   SCSI disk driver that layers on every SCSI IO protocol in the system.\r
 \r
-Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>\r
+Copyright (c) 2006 - 2011, 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
@@ -454,17 +454,8 @@ ScsiDiskReadBlocks (
   BOOLEAN             MediaChange;\r
   EFI_TPL             OldTpl;\r
 \r
-  MediaChange = FALSE;\r
-  if (Buffer == NULL) {\r
-    return EFI_INVALID_PARAMETER;\r
-  }\r
-\r
-  if (BufferSize == 0) {\r
-    return EFI_SUCCESS;\r
-  }\r
-\r
-  OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r
-\r
+  MediaChange    = FALSE;\r
+  OldTpl         = gBS->RaiseTPL (TPL_CALLBACK);\r
   ScsiDiskDevice = SCSI_DISK_DEV_FROM_THIS (This);\r
 \r
   if (!IS_DEVICE_FIXED(ScsiDiskDevice)) {\r
@@ -502,6 +493,16 @@ ScsiDiskReadBlocks (
     goto Done;\r
   }\r
 \r
+  if (Buffer == NULL) {\r
+    Status = EFI_INVALID_PARAMETER;\r
+    goto Done;\r
+  }\r
+\r
+  if (BufferSize == 0) {\r
+    Status = EFI_SUCCESS;\r
+    goto Done;\r
+  }\r
+\r
   if (BufferSize % BlockSize != 0) {\r
     Status = EFI_BAD_BUFFER_SIZE;\r
     goto Done;\r
@@ -569,17 +570,8 @@ ScsiDiskWriteBlocks (
   BOOLEAN             MediaChange;\r
   EFI_TPL             OldTpl;\r
 \r
-  MediaChange = FALSE;\r
-  if (Buffer == NULL) {\r
-    return EFI_INVALID_PARAMETER;\r
-  }\r
-\r
-  if (BufferSize == 0) {\r
-    return EFI_SUCCESS;\r
-  }\r
-\r
-  OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r
-\r
+  MediaChange    = FALSE;\r
+  OldTpl         = gBS->RaiseTPL (TPL_CALLBACK);\r
   ScsiDiskDevice = SCSI_DISK_DEV_FROM_THIS (This);\r
 \r
   if (!IS_DEVICE_FIXED(ScsiDiskDevice)) {\r
@@ -617,6 +609,16 @@ ScsiDiskWriteBlocks (
     goto Done;\r
   }\r
 \r
+  if (BufferSize == 0) {\r
+    Status = EFI_SUCCESS;\r
+    goto Done;\r
+  }\r
+\r
+  if (Buffer == NULL) {\r
+    Status = EFI_INVALID_PARAMETER;\r
+    goto Done;\r
+  }\r
+\r
   if (BufferSize % BlockSize != 0) {\r
     Status = EFI_BAD_BUFFER_SIZE;\r
     goto Done;\r