AtaBusDxe: Fix ReadBlockEx andWriteBlockEx to still signal event when the BufferSize...

[mirror_edk2.git] / MdeModulePkg / Bus / Ata / AtaBusDxe / AtaBus.c

diff --git a/MdeModulePkg/Bus/Ata/AtaBusDxe/AtaBus.c b/MdeModulePkg/Bus/Ata/AtaBusDxe/AtaBus.c
index b113b8d851b298f1eb993afa9d54c70df1300a06..26783169ea2cdafe7cbf0687387021d7b8debadf 100644 (file)
--- a/MdeModulePkg/Bus/Ata/AtaBusDxe/AtaBus.c
+++ b/MdeModulePkg/Bus/Ata/AtaBusDxe/AtaBus.c
@@ -4,7 +4,7 @@
   This file implements protocol interfaces: Driver Binding protocol,\r
   Block IO protocol and DiskInfo protocol.\r
 \r
-  Copyright (c) 2009 - 2013, Intel Corporation. All rights reserved.<BR>\r
+  Copyright (c) 2009 - 2014, 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
@@ -1072,6 +1072,10 @@ BlockIoReadWrite (
   }\r
 \r
   if (BufferSize == 0) {\r
+    if ((Token != NULL) && (Token->Event != NULL)) {\r
+      Token->TransactionStatus = EFI_SUCCESS;\r
+      gBS->SignalEvent (Token->Event);\r
+    }\r
     return EFI_SUCCESS;\r
   }\r
 \r