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when timeout is 0, infinite loop on the timeout request to follow UEFI spec 

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11343 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
erictian 2011-03-04 01:26:40 +00:00
parent 6617d838fa
commit 17a6c337d2
2 changed files with 32 additions and 10 deletions
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15
MdeModulePkg/Bus/Pci/EhciDxe/EhciSched.c
View File

@ -2,7 +2,7 @@
EHCI transfer scheduling routines.
Copyright (c) 2007 - 2010, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2007 - 2011, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
@ -691,12 +691,23 @@ EhcExecTransfer (
UINTN Index;
UINTN Loop;
BOOLEAN Finished;
BOOLEAN InfiniteLoop;
Status = EFI_SUCCESS;
Loop = (TimeOut * EHC_1_MILLISECOND / EHC_SYNC_POLL_INTERVAL) + 1;
Finished = FALSE;
InfiniteLoop = FALSE;
for (Index = 0; Index < Loop; Index++) {
//
// According to UEFI spec section 16.2.4, If Timeout is 0, then the caller
// must wait for the function to be completed until EFI_SUCCESS or EFI_DEVICE_ERROR
// is returned.
//
if (TimeOut == 0) {
InfiniteLoop = TRUE;
}
for (Index = 0; InfiniteLoop || (Index < Loop); Index++) {
Finished = EhcCheckUrbResult (Ehc, Urb);
if (Finished) {

15
MdeModulePkg/Bus/Pci/UhciDxe/UhciSched.c
View File

@ -2,7 +2,7 @@
The EHCI register operation routines.
Copyright (c) 2007 - 2010, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2007 - 2011, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
@ -576,12 +576,23 @@ UhciExecuteTransfer (
UINTN Delay;
BOOLEAN Finished;
EFI_STATUS Status;
BOOLEAN InfiniteLoop;
Finished = FALSE;
Status = EFI_SUCCESS;
Delay = (TimeOut * UHC_1_MILLISECOND / UHC_SYNC_POLL_INTERVAL) + 1;
InfiniteLoop = FALSE;
for (Index = 0; Index < Delay; Index++) {
//
// According to UEFI spec section 16.2.4, If Timeout is 0, then the caller
// must wait for the function to be completed until EFI_SUCCESS or EFI_DEVICE_ERROR
// is returned.
//
if (TimeOut == 0) {
InfiniteLoop = TRUE;
}
for (Index = 0; InfiniteLoop || (Index < Delay); Index++) {
Finished = UhciCheckTdStatus (Uhc, Td, IsLow, QhResult);
//