Comment # 4 on bug 1129258 from Nicolas Patricio Saenz Julienne

(In reply to Takashi Iwai from comment #3)
> (In reply to Nicolas Patricio Saenz Julienne from comment #2)
> > I'm curious to know why is the i2c-device being removed.
> 
> It's from psmouse_smbus_disconnect().
> 
> And this sounds like a known problem, according to the comments in
> psmouse_smbus_schedule_remove():
> 
> /*
>  * This schedules removal of SMBus companion device. We have to do
>  * it in a separate tread to avoid deadlocking on psmouse_mutex in
>  * case the device has a trackstick (which is also driven by psmouse).
>  *
>  * Note that this may be racing with i2c adapter removal, but we
>  * can't do anything about that: i2c automatically destroys clients
>  * attached to an adapter that is being removed. This has to be
>  * fixed in i2c core.
>  */

Fair enough, but the removal happens on resume time, which I found kind of
strange.