Fix the bug in PciBus driver to correct parse the 64bit BAR.

Signed-off-by: Ruiyu Ni<ruiyu.ni@intel.com>
Reviewed-by: Rui Sun<rui.sun@intel.com>
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13673 6f19259b-4bc3-4df7-8a09-765794883524

diff --git a/MdeModulePkg/Bus/Pci/PciBusDxe/PciEnumeratorSupport.c b/MdeModulePkg/Bus/Pci/PciBusDxe/PciEnumeratorSupport.c
index 16f14ca2c812302f84f917ec878260fb4d1b5013..a1627807e57ed88710a11130da3241832de3fb71 100644 (file)
--- a/MdeModulePkg/Bus/Pci/PciBusDxe/PciEnumeratorSupport.c
+++ b/MdeModulePkg/Bus/Pci/PciBusDxe/PciEnumeratorSupport.c
@@ -1473,8 +1473,6 @@ PciIovParseVfBar (
   UINT32      Value;\r
   UINT32      OriginalValue;\r
   UINT32      Mask;\r
-  UINT32      Data;\r
-  UINT8       Index;\r
   EFI_STATUS  Status;\r
 \r
   //\r
@@ -1592,12 +1590,7 @@ PciIovParseVfBar (
       //\r
       // Fix the length to support some spefic 64 bit BAR\r
       //\r
-      Data  = Value;\r
-      Index = 0;\r
-      for (Data = Value; Data != 0; Data >>= 1) {\r
-       Index ++;\r
-      }\r
-      Value |= ((UINT32)(-1) << Index); \r
+      Value |= ((UINT32) -1 << HighBitSet32 (Value));\r
 \r
       //\r
       // Calculate the size of 64bit bar\r
@@ -1672,8 +1665,6 @@ PciParseBar (
   UINT32      Value;\r
   UINT32      OriginalValue;\r
   UINT32      Mask;\r
-  UINT32      Data;\r
-  UINT8       Index;\r
   EFI_STATUS  Status;\r
 \r
   OriginalValue = 0;\r
@@ -1810,12 +1801,7 @@ PciParseBar (
       //\r
       // Fix the length to support some spefic 64 bit BAR\r
       //\r
-      Data  = Value;\r
-      Index = 0;\r
-      for (Data = Value; Data != 0; Data >>= 1) {\r
-        Index ++;\r
-      }\r
-      Value |= ((UINT32)(-1) << Index);\r
+      Value |= ((UINT32)(-1) << HighBitSet32 (Value));\r
 \r
       //\r
       // Calculate the size of 64bit bar\r