[PATCH 12/18] Ps2KbdCtrller: Make wait for SUCCESS after BAT non-fatal

["Sean Rhodes" <sean@starlabs.systems>]

From: Matt DeVillier <matt.devillier@gmail.com>

Recent model Chromebooks only return ACK, but not
BAT_SUCCESS, which causes hanging and failed ps2k init.
To mitigate this, make the absence of BAT_SUCCESS reply
non-fatal, and reduce the no-reply timeout from 4s to 1s.

Tested on google/dracia and purism/librem_14

Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
---
 MdeModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2KbdCtrller.c | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/MdeModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2KbdCtrller.c b/MdeModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2KbdCtrller.c
index 77dc226222..981309f8b0 100644
--- a/MdeModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2KbdCtrller.c
+++ b/MdeModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2KbdCtrller.c
@@ -1731,13 +1731,7 @@ InitKeyboard (
     //
     // wait for BAT completion code
     //
-    mWaitForValueTimeOut = KEYBOARD_BAT_TIMEOUT;
-
-    Status = KeyboardWaitForValue (ConsoleIn, KEYBOARD_8048_RETURN_8042_BAT_SUCCESS);
-    if (EFI_ERROR (Status)) {
-      KeyboardError (ConsoleIn, L"Keyboard self test failed!\n\r");
-      goto Done;
-    }
+    KeyboardWaitForValue (ConsoleIn, KEYBOARD_8048_RETURN_8042_BAT_SUCCESS);
 
     mWaitForValueTimeOut = KEYBOARD_WAITFORVALUE_TIMEOUT;
 
-- 
2.32.0