When calling SetTimer with Type is not TimerCancel and TriggerTime is 0,
gTimer is used to get the timer period. However, gTimer is NULL before
EFI_TIMER_ARCH_PROTOCOL is installed. Adding the check of gTimer and
return EFI_NOT_READY to avoid the hang.
Cc: Jian J Wang <jian.j.w...@intel.com>
Cc: Dandan Bi <dandan...@intel.com>
Cc: Liming Gao <gaolim...@byosoft.com.cn>
Signed-off-by: Ying-Tsun Huang <ying-tsun.hu...@amd.com>
---
MdeModulePkg/Core/Dxe/DxeMain.h | 2 ++
MdeModulePkg/Core/Dxe/Event/Timer.c | 14 ++++++++++----
2 files changed, 12 insertions(+), 4 deletions(-)
diff --git a/MdeModulePkg/Core/Dxe/DxeMain.h b/MdeModulePkg/Core/Dxe/DxeMain.h
index 815a6b4bd844..acf0b244aeda 100644
--- a/MdeModulePkg/Core/Dxe/DxeMain.h
+++ b/MdeModulePkg/Core/Dxe/DxeMain.h
@@ -1538,6 +1538,8 @@ CoreCreateEventInternal (
@retval EFI_SUCCESS The event has been set to be signaled at the
requested time
@retval EFI_INVALID_PARAMETER Event or Type is not valid
+ @retval EFI_NOT_READY Type is not TimerCancel, TriggerTime is 0, but
+ EFI_TIMER_ARCH_PROTOCOL is not installed yet
**/
EFI_STATUS
diff --git a/MdeModulePkg/Core/Dxe/Event/Timer.c
b/MdeModulePkg/Core/Dxe/Event/Timer.c
index 29e507c67c50..1621814ef3c5 100644
--- a/MdeModulePkg/Core/Dxe/Event/Timer.c
+++ b/MdeModulePkg/Core/Dxe/Event/Timer.c
@@ -229,6 +229,8 @@ CoreTimerTick (
@retval EFI_SUCCESS The event has been set to be signaled at the
requested time
@retval EFI_INVALID_PARAMETER Event or Type is not valid
+ @retval EFI_NOT_READY Type is not TimerCancel, TriggerTime is 0, but
+ EFI_TIMER_ARCH_PROTOCOL is not installed yet
**/
EFI_STATUS
@@ -255,6 +257,14 @@ CoreSetTimer (
return EFI_INVALID_PARAMETER;
}
+ if ((Type != TimerCancel) && (TriggerTime == 0)) {
+ if (gTimer) {
+ gTimer->GetTimerPeriod (gTimer, &TriggerTime);
+ } else {
+ return EFI_NOT_READY;
+ }
+ }
+
CoreAcquireLock (&mEfiTimerLock);
//
@@ -270,10 +280,6 @@ CoreSetTimer (
if (Type != TimerCancel) {
if (Type == TimerPeriodic) {
- if (TriggerTime == 0) {
- gTimer->GetTimerPeriod (gTimer, &TriggerTime);
- }
-
Event->Timer.Period = TriggerTime;
}
--
2.25.1
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