Re: [Bug #13837] Input : regression - touchpad not detected

Dave Young
2009-07-27T08:45:07Z

On Mon, Jul 27, 2009 at 4:28 AM, Rafael J. Wysocki<rjw-KKrjLPT3xs0@public.gmane.org> 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-Re5JQEeQqe8@public.gmane.orgm>
> Date            : 2009-07-17 07:13 (10 days old)
> References      : http://marc.info/?l=linux-kernel&m=124780763701571&w=4
>
>
>

--
Regards
dave