linux-kernel - Re: [PATCH] input: Introduce light-weight contact tracking

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <4CD71131.3080706@euromail.se>
Date:	Sun, 07 Nov 2010 21:50:57 +0100
From:	Henrik Rydberg <rydberg@...omail.se>
To:	Rafi Rubin <rafi@...s.upenn.edu>
CC:	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
	Chris Bagwell <chris@...bagwell.com>,
	Chase Douglas <chasedouglas@...il.com>,
	Takashi Iwai <tiwai@...e.de>
Subject: Re: [PATCH] input: Introduce light-weight contact tracking

On 11/07/2010 09:44 PM, Rafi Rubin wrote:

> On 11/07/2010 03:18 PM, Henrik Rydberg wrote:
>> Some kernel drivers demand the use of contact tracking for proper
>> filtering and pointer emulation. With one exception, these drivers
>> are limited to a maximum of four concurrent contacts. This patch adds
>> a simple matcher for up to four contacts, with these notable properties:
> 
> Tracking in the ntrig driver needs to support a minimum of 6 fingers.  I have
> also seen press releases claiming 10+ eventually.  I don't know if those devices
> will support tracking in the hardware/firmware.


This is the exception I was talking about. The thing is, I can very well see a
driver supporting four fingers even if the device claims to support six. After
all, getting those four fingers working well will still be a big improvement.

Henrik
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/