diff options
| -rw-r--r-- | MdeModulePkg/Bus/Pci/EhciDxe/EhciSched.c | 21 | ||||
| -rw-r--r-- | MdeModulePkg/Bus/Pci/UhciDxe/UhciSched.c | 21 |
2 files changed, 32 insertions, 10 deletions
diff --git a/MdeModulePkg/Bus/Pci/EhciDxe/EhciSched.c b/MdeModulePkg/Bus/Pci/EhciDxe/EhciSched.c index 27d336a..4dc8e1a 100644 --- a/MdeModulePkg/Bus/Pci/EhciDxe/EhciSched.c +++ b/MdeModulePkg/Bus/Pci/EhciDxe/EhciSched.c @@ -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;
+ 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) {
diff --git a/MdeModulePkg/Bus/Pci/UhciDxe/UhciSched.c b/MdeModulePkg/Bus/Pci/UhciDxe/UhciSched.c index cac2d92..0d97bcc 100644 --- a/MdeModulePkg/Bus/Pci/UhciDxe/UhciSched.c +++ b/MdeModulePkg/Bus/Pci/UhciDxe/UhciSched.c @@ -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;
+ 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);
//
|