MdeModulePkg/Bus/Pci/UhciDxe: Fix the UsbHc memory allocate and free issue

When use the UsbHcAllocMemFromBlock() and UsbHcFreeMem() to allocate
memory and free memory for the UHC, it should use the corresponding host
address but not the pci bus address.

Signed-off-by: jdzhang <jdzhang@zd-tech.com.cn>
Reviewed-by: Hao A Wu <hao.a.wu@intel.com>

diff --git a/MdeModulePkg/Bus/Pci/UhciDxe/UsbHcMem.c b/MdeModulePkg/Bus/Pci/UhciDxe/UsbHcMem.c
index d6b9615e499264a4d9430627e1d072cec427f2cc..c3d46f60bed50be167e3db91b13cba0a0f6f091b 100644 (file)
--- a/MdeModulePkg/Bus/Pci/UhciDxe/UsbHcMem.c
+++ b/MdeModulePkg/Bus/Pci/UhciDxe/UsbHcMem.c
@@ -207,7 +207,7 @@ UsbHcAllocMemFromBlock (
     NEXT_BIT (Byte, Bit);\r
   }\r
 \r
-  return Block->Buf + (StartByte * 8 + StartBit) * USBHC_MEM_UNIT;\r
+  return Block->BufHost + (StartByte * 8 + StartBit) * USBHC_MEM_UNIT;\r
 }\r
 \r
 /**\r
@@ -508,12 +508,12 @@ UsbHcFreeMem (
     // scan the memory block list for the memory block that\r
     // completely contains the memory to free.\r
     //\r
-    if ((Block->Buf <= ToFree) && ((ToFree + AllocSize) <= (Block->Buf + Block->BufLen))) {\r
+    if ((Block->BufHost <= ToFree) && ((ToFree + AllocSize) <= (Block->BufHost + Block->BufLen))) {\r
       //\r
       // compute the start byte and bit in the bit array\r
       //\r
-      Byte = ((ToFree - Block->Buf) / USBHC_MEM_UNIT) / 8;\r
-      Bit  = ((ToFree - Block->Buf) / USBHC_MEM_UNIT) % 8;\r
+      Byte = ((ToFree - Block->BufHost) / USBHC_MEM_UNIT) / 8;\r
+      Bit  = ((ToFree - Block->BufHost) / USBHC_MEM_UNIT) % 8;\r
 \r
       //\r
       // reset associated bits in bit array\r