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Enhance CreatePopup to call ReadKeyStroke() before calling WaitForEvent(). This can handle the case when in lazy ConIn mode.

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Signed-off-by: Ruiyu Ni<ruiyu.ni@intel.com>
Reviewed-by: Eric Dong<eric.dong@intel.com>

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13945 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
niruiyu 2012-11-15 06:31:25 +00:00
parent 22921b02ab
commit f04544be83
1 changed files with 15 additions and 2 deletions
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17
MdePkg/Library/UefiLib/Console.c
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@ -406,6 +406,7 @@ CreatePopUp (
... ...
) )
{ {
EFI_STATUS Status;
VA_LIST Args; VA_LIST Args;
EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL *ConOut; EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL *ConOut;
EFI_SIMPLE_TEXT_OUTPUT_MODE SavedConsoleMode; EFI_SIMPLE_TEXT_OUTPUT_MODE SavedConsoleMode;
@ -554,7 +555,19 @@ CreatePopUp (
// Wait for a keystroke // Wait for a keystroke
// //
if (Key != NULL) { if (Key != NULL) {
gBS->WaitForEvent (1, &gST->ConIn->WaitForKey, &EventIndex); while (TRUE) {
gST->ConIn->ReadKeyStroke (gST->ConIn, Key); Status = gST->ConIn->ReadKeyStroke (gST->ConIn, Key);
if (!EFI_ERROR (Status)) {
break;
}
//
// If we encounter error, continue to read another key in.
//
if (Status != EFI_NOT_READY) {
continue;
}
gBS->WaitForEvent (1, &gST->ConIn->WaitForKey, &EventIndex);
}
} }
} }