Don't issue KBD_LINE_TEST, the results are unreliable. Fixes reopen of #688.

svn path=/trunk/; revision=18699

diff --git a/reactos/drivers/input/i8042prt/i8042prt.c b/reactos/drivers/input/i8042prt/i8042prt.c
index b555ef2..30cdbf2 100644 (file)
--- a/reactos/drivers/input/i8042prt/i8042prt.c
+++ b/reactos/drivers/input/i8042prt/i8042prt.c
@@ -577,12 +577,12 @@ static NTSTATUS STDCALL I8042BasicDetect(PDEVICE_EXTENSION DevExt)
                return FALSE;
        }
 
-       if (I8042Write(DevExt, I8042_CTRL_PORT, KBD_LINE_TEST))
-       {
-               Status = I8042ReadDataWait(DevExt, &Value);
-               if (NT_SUCCESS(Status) && Value == 0)
-                       DevExt->KeyboardExists = TRUE;
-       }
+       /*
+        * We used to send a KBD_LINE_TEST command here, but on at least HP
+        * Pavilion notebooks the response to that command was incorrect.
+        * So now we just assume that a keyboard is attached.
+        */
+       DevExt->KeyboardExists = TRUE;
 
        if (I8042Write(DevExt, I8042_CTRL_PORT, MOUSE_LINE_TEST))
        {