linux-kernel - Re: What's in hid.git for 2.6.30

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Message-Id: <200905011102.18945.oliver@neukum.org>
Date:	Fri, 1 May 2009 11:02:18 +0200
From:	Oliver Neukum <oliver@...kum.org>
To:	Jiri Kosina <jkosina@...e.cz>
Cc:	Guillaume Chazarain <guichaz@...il.com>,
	linux-kernel@...r.kernel.org
Subject: Re: What's in hid.git for 2.6.30

Am Friday 01 May 2009 01:09:12 schrieben Sie:
> On Fri, 1 May 2009, Oliver Neukum wrote:
> > > --- a/drivers/hid/hid-core.c
> > > +++ b/drivers/hid/hid-core.c
> > > @@ -1824,6 +1824,9 @@ int hid_check_keys_pressed(struct hid_device
> > > *hid) struct hid_input *hidinput;
> > >         int i;
> > >  
> > > +       if (!(hid->claimed & HID_CLAIMED_INPUT))
> > > +               return 0;
> > > +
> >
> > is there a guarantee all keyboards will be claimed as input devices?
>
> Hi Oliver,
>
> do you see any way how hid->inputs could currently be initialized other
> than the device being claimed by hid-input?

No, but I am worried about a false return of 0 here, not the other way
round. This method is necessary because keyboards don't wake up
if a key is released. Suspending a keyboard with a key pressed will lead
to an endless repetition of that key.
So I wonder whether it is possible to have a keyboard not claimed as an
input device.

	Regards
		Oliver

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