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MdeModulePkg/Ps2Kb: ReadKeyStrokeEx always return key state

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Today's implementation only return key state when there is key.
But when user doesn't press any key, the key state cannot be
returned.

The patch changes the ReadKeyStrokeEx() to always return the
key state even there is no key pressed.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
This commit is contained in:
Ruiyu Ni
2018-01-16 16:21:42 +08:00
parent c095341cc4
commit c9e6803cf4
3 changed files with 54 additions and 24 deletions
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6
MdeModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2KbdTextIn.c
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@ -2,7 +2,7 @@
Routines implements SIMPLE_TEXT_IN protocol's interfaces based on 8042 interfaces
provided by Ps2KbdCtrller.c.
Copyright (c) 2006 - 2017, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2006 - 2018, 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
@ -165,6 +165,10 @@ KeyboardReadKeyStrokeWorker (
Status = EFI_DEVICE_ERROR;
} else {
Status = PopEfikeyBufHead (&ConsoleInDev->EfiKeyQueue, KeyData);
if (Status == EFI_NOT_READY) {
ZeroMem (&KeyData->Key, sizeof (KeyData->Key));
InitializeKeyState (ConsoleInDev, &KeyData->KeyState);
}
}
gBS->RestoreTPL (OldTpl);