[patch 2/3] IntelFrameworkModulePkg: Avoid key notification called more than once

[dandan bi <dandan.bi@intel.com>]

From: Dandan Bi <dandan.bi@intel.com>

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=996

Issue:
In current code logic, when a key is pressed, it will search
the whole NotifyList to find whether a notification has been
registered with the keystroke. if yes, it will en-queue the
key for notification execution later. And now if different
notification functions have been registered with the same key,
then the key will be en-queued more than once. Then it will
cause the notification executed more than once.

This patch is to enhance the code logic to fix this issue.

Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Dandan Bi <dandan.bi@intel.com>
---
 IntelFrameworkModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2KbdCtrller.c   | 1 +
 IntelFrameworkModulePkg/Csm/BiosThunk/KeyboardDxe/BiosKeyboard.c | 1 +
 2 files changed, 2 insertions(+)

diff --git a/IntelFrameworkModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2KbdCtrller.c b/IntelFrameworkModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2KbdCtrller.c
index 202588191e..fddb0b21fb 100644
--- a/IntelFrameworkModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2KbdCtrller.c
+++ b/IntelFrameworkModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2KbdCtrller.c
@@ -1485,10 +1485,11 @@ KeyGetchar (
       // while current TPL is TPL_NOTIFY. It will be invoked in
       // KeyNotifyProcessHandler() which runs at TPL_CALLBACK.
       //
       PushEfikeyBufTail (&ConsoleIn->EfiKeyQueueForNotify, &KeyData);
       gBS->SignalEvent (ConsoleIn->KeyNotifyProcessEvent);
+      break;
     }
   }
 
   PushEfikeyBufTail (&ConsoleIn->EfiKeyQueue, &KeyData);
 }
diff --git a/IntelFrameworkModulePkg/Csm/BiosThunk/KeyboardDxe/BiosKeyboard.c b/IntelFrameworkModulePkg/Csm/BiosThunk/KeyboardDxe/BiosKeyboard.c
index 63f6303995..bee5f8f5e5 100644
--- a/IntelFrameworkModulePkg/Csm/BiosThunk/KeyboardDxe/BiosKeyboard.c
+++ b/IntelFrameworkModulePkg/Csm/BiosThunk/KeyboardDxe/BiosKeyboard.c
@@ -1984,10 +1984,11 @@ BiosKeyboardTimerHandler (
       // while current TPL is TPL_NOTIFY. It will be invoked in
       // KeyNotifyProcessHandler() which runs at TPL_CALLBACK.
       //
       Enqueue (&BiosKeyboardPrivate->QueueForNotify, &KeyData);
       gBS->SignalEvent (BiosKeyboardPrivate->KeyNotifyProcessEvent);
+      break;
     }
   }
 
   Enqueue (&BiosKeyboardPrivate->Queue, &KeyData);
 
-- 
2.14.3.windows.1