linux-kernel - Re: [PATCH 1/1] HID: multitouch: enable palm rejection if device implements confidence usage

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Date:	Thu, 14 Jan 2016 18:01:23 +0800
From:	Allen Hung <allen_hung@...l.com>
To:	Benjamin Tissoires <benjamin.tissoires@...il.com>
Cc:	Jiri Kosina <jikos@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	linux-input <linux-input@...r.kernel.org>
Subject: Re: [PATCH 1/1] HID: multitouch: enable palm rejection if device
 implements confidence usage

Hi Benjamin,

On 01/04/2016 04:35 PM, Benjamin Tissoires wrote:
> Hi Allen,
>
> On Mon, Dec 21, 2015 at 10:45 AM, Allen Hung <allen_hung@...l.com> wrote:
>> On 12/18/2015 05:52 AM, Benjamin Tissoires wrote:
>>> On Thu, Nov 26, 2015 at 3:21 PM, Jiri Kosina <jikos@...nel.org> wrote:
>>>> On Fri, 20 Nov 2015, Allen Hung wrote:
>>>>
>>>>> The usage Confidence is mandary to Windows Precision Touchpad devices. The
>>>>> appearance of this usage is checked in hidinput_connect but the quirk
>>>>> MT_QUIRK_VALID_IS_CONFIDENCE is not applied to device accordingly.
>>>>> Apply this quirk and also remove quirk MT_QUIRK_ALWAYS_VALID to enable palm
>>>>> rejection for the WIN 8 touchpad devices which have implemented usage
>>>>> Confidence in its input reports.
>>>>>
>>>>> Tested on Dell XPS 13 laptop.
>>>>>
>>>>> Signed-off-by: Allen Hung <allen_hung@...l.com>
>>>> Applied to for-4.5/multitouch. Thanks,
>>>>
>>> Allen, looks like the Dell XPS13 2015 (or was it the 2014?) has
>>> problems with your patch:
>>> https://bugzilla.redhat.com/show_bug.cgi?id=1292583 (we backported
>>> this change in the Fedora kernel 4.2.7).
>>>
>>> Would you mind checking that this patch does not create regressions on
>>> older series of laptops?
>>>
>>> Thanks in advance.
>>>
>>> Cheers,
>>> Benjamin
>> Hi Benjamin,
>>
>> It looks like a XPS13 2014 but I can confirm this with my colleagues who are in charge of this product line. I don't mind checking this patch with more older series of laptops. I will do it and let you know the status. Should I also test the machines with Fedora 23, or just go with Ubuntu OS? The XPS machines are shipped with Ubuntu.
>> Btw, the issue reporter said she/he cannot reproduce the issue (posted on Dec. 18).
>>
> [Sorry for the late answer, but you guessed the holiday season did not help :)]
>
> I think I'll just ask the reporter to confirm he can not reproduce and
> then close the downstream bug.
> Unless other people complains, I think we can just keep the current
> state and wait :)
>
> Cheers,
> Benjamin
I saw the issue (https://bugzilla.redhat.com/show_bug.cgi?id=1292583)
has been closed. Thank you for efforts.

Regards,
Allen Hung