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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>
This commit is contained in:
jdzhang 2021-11-25 15:44:48 +08:00 committed by mergify[bot]
parent 7b28310008
commit d25b803e51
1 changed files with 4 additions and 4 deletions
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8
MdeModulePkg/Bus/Pci/UhciDxe/UsbHcMem.c
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@ -207,7 +207,7 @@ UsbHcAllocMemFromBlock (
NEXT_BIT (Byte, Bit);
}
return Block->Buf + (StartByte * 8 + StartBit) * USBHC_MEM_UNIT;
return Block->BufHost + (StartByte * 8 + StartBit) * USBHC_MEM_UNIT;
}
/**
@ -508,12 +508,12 @@ UsbHcFreeMem (
// scan the memory block list for the memory block that
// completely contains the memory to free.
//
if ((Block->Buf <= ToFree) && ((ToFree + AllocSize) <= (Block->Buf + Block->BufLen))) {
if ((Block->BufHost <= ToFree) && ((ToFree + AllocSize) <= (Block->BufHost + Block->BufLen))) {
//
// compute the start byte and bit in the bit array
//
Byte = ((ToFree - Block->Buf) / USBHC_MEM_UNIT) / 8;
Bit = ((ToFree - Block->Buf) / USBHC_MEM_UNIT) % 8;
Byte = ((ToFree - Block->BufHost) / USBHC_MEM_UNIT) / 8;
Bit = ((ToFree - Block->BufHost) / USBHC_MEM_UNIT) % 8;
//
// reset associated bits in bit array