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Message-ID: <411BA797.2030705@eidetix.com>
Date: Thu, 12 Aug 2004 19:23:35 +0200
From: "David N. Welton" <davidw@eidetix.com>
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CC: Sascha Wilde <wilde@sha-bang.de>,
       Dmitry Torokhov <dtor_core@ameritech.net>,
       Vojtech Pavlik <vojtech@suse.cz>
Subject: Re: 2.6 kernel won't reboot on AMD system - 8042 problem?
References: <20040811141408.17933.qmail@web81304.mail.yahoo.com> <20040811175613.GA829@kenny.sha-bang.local> <411BA214.2060306@eidetix.com>
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David N. Welton wrote:

> Sascha, if you want to test it out, try this in i8042_controller_init,
> at about line 724 (near this: i8042_initial_ctr = i8042_ctr;)
> 
>     {
>         unsigned char pram;
>         pram = (~i8042_ctr) & 0xff ;
>         i8042_command(&pram, I8042_CMD_CTL_WCTR);
>     }

In fact, it's enough to fix the problem on my machine!  I can even plug 
the keyboard back in and it works.

--- /home/davidw/linux-2.6.7/drivers/input/serio/i8042.c 
2004-06-16 07:18
:57.000000000 +0200
+++ drivers/input/serio/i8042.c 2004-08-12 19:05:17.000000000 +0200
@@ -710,6 +710,9 @@
                 return -1;
         }

+
+       i8042_ctr = (~i8042_ctr) & 0xff;
+
         i8042_initial_ctr = i8042_ctr;

Try that and see how it works for you (sorry 'bout the formatting... at 
work I have Mozilla Thunderbird).

Now... I guess the problem is: 1) why the heck does that work? 2) How to 
integrate it into the kernel?   I don't suppose everyone else wants 
their register values inverted.

-- 
David N. Welton
davidw@eidetix.com