linux-kernel - Re: Multitouch regression in 3.3 on thinkpad X220 clickpad

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]

Date:	Fri, 20 Apr 2012 23:00:52 -0700
From:	Dmitry Torokhov <dmitry.torokhov@...il.com>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc:	Daniel Drake <dsd@...top.org>,
	Peter Hutterer <peter.hutterer@...-t.net>,
	"X.Org Devel List" <xorg-devel@...ts.freedesktop.org>,
	Linux Kernel list <linux-kernel@...r.kernel.org>
Subject: Re: Multitouch regression in 3.3 on thinkpad X220 clickpad

On Sat, Apr 21, 2012 at 10:16:40AM +1000, Benjamin Herrenschmidt wrote:
> On Fri, 2012-04-20 at 10:01 -0700, Dmitry Torokhov wrote:
> 
> > It looks we lost a condition in synaptics_set_advanced_gesture_mode().
> > It used to be:
> > 
> > 
> > 	if (!(SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) ||
> > 			SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)))
> > 		return 0;
> > 
> > and now simply is:
> > 
> > 	if (!SYN_CAP_ADV_GESTURE(priv->ext_cap_0c))
> > 		return 0;
> > 
> > Could you try restoring the condition and see if it fixes the
> > regression?
> 
> Yes, that's it. Please shoot the patch below to Linus.
> 
> Thanks,
> Ben.
> 
> input/synaptics: Fix regression with "image sensor" trackpads
> 
> commit 7968a5dd492ccc38345013e534ad4c8d6eb60ed1
> Input: synaptics - add support for Relative mode
> 
> Accidentally broke support for advanced gestures (multitouch)
> on some trackpads such as the one in my ThinkPad X220 by
> incorretly changing the condition for enabling them. This
> restores it.
> 
> Signed-off-by: Benjamin Herrenschmidt <benh@...nel.crashing.org>
> CC: stable@...nel.org [3.3]
> 

Applied, thank you Ben.

-- 
Dmitry
--
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/