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Do not call LocateProtocol when the current TPL is above or equal TPL_NOTIFY. 

Signed-off-by: niruiyu
Reviewed-by: mdkinney

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12696 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
niruiyu 2011-11-15 01:48:13 +00:00
parent 801401877e
commit f0d711eb1b
1 changed files with 18 additions and 6 deletions
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24
MdeModulePkg/Library/DxeReportStatusCodeLib/ReportStatusCodeLib.c
View File

@ -1,7 +1,7 @@
/** @file
Report Status Code Library for DXE Phase.
Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2006 - 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
@ -45,6 +45,7 @@ InternalGetReportStatusCode (
)
{
EFI_STATUS Status;
EFI_TPL Tpl;
if (mReportStatusCodeLibStatusCodeProtocol != NULL) {
return;
@ -53,10 +54,18 @@ InternalGetReportStatusCode (
//
// Check gBS just in case ReportStatusCode is called before gBS is initialized.
//
if (gBS != NULL && gBS->LocateProtocol != NULL) {
Status = gBS->LocateProtocol (&gEfiStatusCodeRuntimeProtocolGuid, NULL, (VOID**) &mReportStatusCodeLibStatusCodeProtocol);
if (EFI_ERROR (Status)) {
mReportStatusCodeLibStatusCodeProtocol = NULL;
if ((gBS != NULL) && (gBS->LocateProtocol != NULL) && (gBS->RaiseTPL != NULL) && (gBS->RestoreTPL != NULL)) {
//
// Retrieve the current TPL
//
Tpl = gBS->RaiseTPL (TPL_HIGH_LEVEL);
gBS->RestoreTPL (Tpl);
if (Tpl < TPL_NOTIFY) {
Status = gBS->LocateProtocol (&gEfiStatusCodeRuntimeProtocolGuid, NULL, (VOID**) &mReportStatusCodeLibStatusCodeProtocol);
if (EFI_ERROR (Status)) {
mReportStatusCodeLibStatusCodeProtocol = NULL;
}
}
}
}
@ -496,7 +505,10 @@ ReportStatusCodeEx (
ASSERT (!((ExtendedData == NULL) && (ExtendedDataSize != 0)));
ASSERT (!((ExtendedData != NULL) && (ExtendedDataSize == 0)));
if (gBS == NULL || gBS->AllocatePool == NULL || gBS->FreePool == NULL) {
if ((gBS == NULL) ||
(gBS->AllocatePool == NULL) || (gBS->FreePool == NULL) ||
(gBS->RaiseTPL == NULL) || (gBS->RestoreTPL == NULL)
) {
return EFI_UNSUPPORTED;
}