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From: Henrik Rydberg <rydberg@bitmath.org>
To: Benjamin Tissoires <benjamin.tissoires@redhat.com>,
	Dmitry Torokhov <dmitry.torokhov@gmail.com>,
	Peter Hutterer <peter.hutterer@who-t.net>
Cc: Jiri Kosina <jkosina@suse.cz>,
	"linux-input@vger.kernel.org" <linux-input@vger.kernel.org>,
	lkml <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v2] Input - mt: Fix input_mt_get_slot_by_key
Date: Thu, 23 Apr 2015 20:52:27 +0200	[thread overview]
Message-ID: <55393F6B.8050904@bitmath.org> (raw)
In-Reply-To: <20150423183827.GA10937@mail.corp.redhat.com>

> My guess is that none of these drivers are
> able to handle a silent closing of a slot and the easiest solution might
> be to simply change the documentation if in fact nobody uses the
> compressed notation (which removes just one ABS_SLOT event within the
> frame, so not sure we can call it compressed BTW).

No, this is a very bad idea. As is obvious from the patch and the problem, there
are cases that the typical add/remove interface cannot handle, without either
adding more frames or support twice as many slots. How else would you report a
complete change of all N contacts into N new contacts, for instance?

The kernel protocol is solid and works for all cases. Userland thus has access
to a complete solution.

Henrik



      parent reply	other threads:[~2015-04-23 18:52 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-03-30 18:54 [PATCH v2] Input - mt: Fix input_mt_get_slot_by_key Benjamin Tissoires
2015-04-06 16:33 ` Dmitry Torokhov
2015-04-07 13:17   ` Jiri Kosina
2015-04-23 16:49     ` Dmitry Torokhov
2015-04-23 17:10       ` Henrik Rydberg
2015-04-23 18:20         ` Dmitry Torokhov
2015-04-23 18:38           ` Benjamin Tissoires
2015-04-23 18:47             ` Dmitry Torokhov
2015-04-24  0:50               ` Peter Hutterer
2015-04-24  6:26                 ` Henrik Rydberg
2015-04-27  3:52                   ` Peter Hutterer
2015-04-27 18:02               ` Benjamin Tissoires
2015-04-23 18:52             ` Henrik Rydberg [this message]

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