linux-kernel - Re: [Bug #13837] Input : regression

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Date:	Mon, 27 Jul 2009 16:45:07 +0800
From:	Dave Young <hidave.darkstar@...il.com>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Kernel Testers List <kernel-testers@...r.kernel.org>,
	Jiri Kosina <jkosina@...e.cz>
Subject: Re: [Bug #13837] Input : regression - touchpad not detected

On Mon, Jul 27, 2009 at 4:28 AM, Rafael J. Wysocki<rjw@...k.pl> wrote:
> This message has been generated automatically as a part of a report
> of recent regressions.
>
> The following bug entry is on the current list of known regressions
> from 2.6.30.  Please verify if it still should be listed and let me know
> (either way).

Now I'm not sure if it's a regression, because it happens not every
boot. Maybe I just noticed it after 2.6.30

jiri, I found the place via extra printk messages added to the i8042.c

in function i8042_check_aux(), when touchpad detecting fail, it fall
into following error path:

 if (wait_for_completion_timeout(&i8042_aux_irq_delivered,
                                        msecs_to_jiffies(250)) == 0) { [snip] }

so maybe the timeout value need to be increased? I try redo the
i8042_setup_aux after it fails, it fixes the problem indeed, which one
is the proper fix do you think? If it's the right fix I can post the
patch.

>
>
> Bug-Entry       : http://bugzilla.kernel.org/show_bug.cgi?id=13837
> Subject         : Input : regression - touchpad not detected
> Submitter       : Dave Young <hidave.darkstar@...il.com>
> Date            : 2009-07-17 07:13 (10 days old)
> References      : http://marc.info/?l=linux-kernel&m=124780763701571&w=4
>
>
>



-- 
Regards
dave
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