Fix the unaligned issue of PCI read/write buffer.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@8333 6f19259b-4bc3-4df7-8a09-765794883524

1 files changed, 6 insertions, 6 deletions

diff --git a/MdePkg/Library/PeiPciSegmentLibPciCfg2/PciSegmentLib.c b/MdePkg/Library/PeiPciSegmentLibPciCfg2/PciSegmentLib.c
index 332d2a9b45..a08298aaa2 100644
--- a/MdePkg/Library/PeiPciSegmentLibPciCfg2/PciSegmentLib.c
+++ b/MdePkg/Library/PeiPciSegmentLibPciCfg2/PciSegmentLib.c
@@ -1259,7 +1259,7 @@ PciSegmentReadBuffer (
     //

     // Read a word if StartAddress is word aligned

     //

-    *(volatile UINT16 *)Buffer = PciSegmentRead16 (StartAddress);

+    WriteUnaligned16 (Buffer, PciSegmentRead16 (StartAddress));

     StartAddress += sizeof (UINT16);

     Size -= sizeof (UINT16);

     Buffer = (UINT16*)Buffer + 1;

@@ -1269,7 +1269,7 @@ PciSegmentReadBuffer (
     //

     // Read as many double words as possible

     //

-    *(volatile UINT32 *)Buffer = PciSegmentRead32 (StartAddress);

+    WriteUnaligned32 (Buffer, PciSegmentRead32 (StartAddress));

     StartAddress += sizeof (UINT32);

     Size -= sizeof (UINT32);

     Buffer = (UINT32*)Buffer + 1;

@@ -1279,7 +1279,7 @@ PciSegmentReadBuffer (
     //

     // Read the last remaining word if exist

     //

-    *(volatile UINT16 *)Buffer = PciSegmentRead16 (StartAddress);

+    WriteUnaligned16 (Buffer, PciSegmentRead16 (StartAddress));

     StartAddress += sizeof (UINT16);

     Size -= sizeof (UINT16);

     Buffer = (UINT16*)Buffer + 1;

@@ -1358,7 +1358,7 @@ PciSegmentWriteBuffer (
     //

     // Write a word if StartAddress is word aligned

     //

-    PciSegmentWrite16 (StartAddress, *(UINT16*)Buffer);

+    PciSegmentWrite16 (StartAddress, ReadUnaligned16 (Buffer));

     StartAddress += sizeof (UINT16);

     Size -= sizeof (UINT16);

     Buffer = (UINT16*)Buffer + 1;

@@ -1368,7 +1368,7 @@ PciSegmentWriteBuffer (
     //

     // Write as many double words as possible

     //

-    PciSegmentWrite32 (StartAddress, *(UINT32*)Buffer);

+    PciSegmentWrite32 (StartAddress, ReadUnaligned32 (Buffer));

     StartAddress += sizeof (UINT32);

     Size -= sizeof (UINT32);

     Buffer = (UINT32*)Buffer + 1;

@@ -1378,7 +1378,7 @@ PciSegmentWriteBuffer (
     //

     // Write the last remaining word if exist

     //

-    PciSegmentWrite16 (StartAddress, *(UINT16*)Buffer);

+    PciSegmentWrite16 (StartAddress, ReadUnaligned16 (Buffer));

     StartAddress += sizeof (UINT16);

     Size -= sizeof (UINT16);

     Buffer = (UINT16*)Buffer + 1;