Update the check condition to allows 64-bit operation's data buffer not to be 64...

Signed-off-by: vanjeff
Reviewed-by: mdkinney
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12809 6f19259b-4bc3-4df7-8a09-765794883524

diff --git a/IntelFrameworkModulePkg/Universal/CpuIoDxe/CpuIo.c b/IntelFrameworkModulePkg/Universal/CpuIoDxe/CpuIo.c
index d0d8a0a7641884735c43a3950b46f23b6756d66a..3865a7cfe0d91d0c92684eab73de852ef1327db5 100644 (file)
--- a/IntelFrameworkModulePkg/Universal/CpuIoDxe/CpuIo.c
+++ b/IntelFrameworkModulePkg/Universal/CpuIoDxe/CpuIo.c
@@ -1,7 +1,7 @@
 /** @file\r
   Uses the services of the I/O Library to produce the CPU I/O Protocol\r
 \r
-Copyright (c) 2004 - 2010, Intel Corporation. All rights reserved.<BR>\r
+Copyright (c) 2004 - 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
@@ -175,8 +175,9 @@ CpuIoCheckParameter (
 \r
   //\r
   // Check to see if Buffer is aligned\r
+  // (IA-32 allows UINT64 and INT64 data types to be 32-bit aligned.)\r
   //\r
-  if (((UINTN)Buffer & (mInStride[Width] - 1)) != 0) {\r
+  if (((UINTN)Buffer & ((MIN (sizeof (UINTN), mInStride[Width])  - 1))) != 0) {\r
     return EFI_UNSUPPORTED;\r
   }\r
 \r