On Thu, 21 Aug 2014, Johan Hovold wrote:
> > It's not really super-nice, but if no other way around it has been found
> > to be possible in USB core, I am willing to take this.
>
> Agreed, it's not that nice, but I'm not aware of any other way to
> prevent the device firmware from disconnecting.
>
> Autosuspend still seems to work, so it would not cause much overhead
> for people not actually using the touchscreen (as long as autosuspend
> is enabled) either.
Okay, good. Will be waiting for your polished patch for this.
[ ... snip ... ]
> > > diff --git a/include/linux/hid.h b/include/linux/hid.h
> > > index 77632cf..13f81ae 100644
> > > --- a/include/linux/hid.h
> > > +++ b/include/linux/hid.h
> > > @@ -286,6 +286,7 @@ struct hid_item {
> > > #define HID_QUIRK_HIDINPUT_FORCE 0x00000080
> > > #define HID_QUIRK_NO_EMPTY_INPUT 0x00000100
> > > #define HID_QUIRK_NO_INIT_INPUT_REPORTS 0x00000200
> > > +#define HID_QUIRK_IN 0x00000400
> >
> > 0x00000400 has been removed before dynamic quirks started to be possible,
> > so there is no potential clash, that's fine.
> >
> > I'd just propose some more descriptive name for the quirk ... how about
> > something like HID_QUIRK_EARLY_INTERRUPT?
>
> Yeah, IN was just a working name. How about HID_QUIRK_ALWAYS_POLL or
> similar as it is not just about disconnect before the device is opened,
> but also if there's an event after the device has been closed (e.g.
> stopping X)?
HID_QUIRK_ALWAYS_POLL sounds good.
Thanks,
--
Jiri Kosina
SUSE Labs
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