From mboxrd@z Thu Jan  1 00:00:00 1970
From: Dave Young <hidave.darkstar-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Subject: Re: [Bug #13837] Input : regression - touchpad not detected
Date: Mon, 27 Jul 2009 16:45:07 +0800
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	 <3zAHs5O6maO.A.u-B.KHObKB@chimera>
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To: "Rafael J. Wysocki" <rjw-KKrjLPT3xs0@public.gmane.org>
Cc: Linux Kernel Mailing List <linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, Kernel Testers List <kernel-testers-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, Jiri Kosina <jkosina-AlSwsSmVLrQ@public.gmane.org>

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. =C2=A0Please 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)) =3D=3D 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 =C2=A0 =C2=A0 =C2=A0 : http://bugzilla.kernel.org/show_bug.=
cgi?id=3D13837
> Subject =C2=A0 =C2=A0 =C2=A0 =C2=A0 : Input : regression - touchpad n=
ot detected
> Submitter =C2=A0 =C2=A0 =C2=A0 : Dave Young <hidave.darkstar-Re5JQEeQqe8@public.gmane.org=
m>
> Date =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0: 2009-07-17 07:13 (10 =
days old)
> References =C2=A0 =C2=A0 =C2=A0: http://marc.info/?l=3Dlinux-kernel&m=
=3D124780763701571&w=3D4
>
>
>



--=20
Regards
dave