linux-kernel - Re: [PATCH 3/3] input: alps: Reset mouse and ALPS driver immediately after first invalid packet

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Message-ID: <542E90D5.2070307@redhat.com>
Date:	Fri, 03 Oct 2014 14:04:37 +0200
From:	Hans de Goede <hdegoede@...hat.com>
To:	Pali Rohár <pali.rohar@...il.com>
CC:	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Yunkang Tang <yunkang.tang@...alps.com>,
	Tommy Will <tommywill2011@...il.com>,
	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/3] input: alps: Reset mouse and ALPS driver immediately
 after first invalid packet

Hi,

On 10/03/2014 01:03 PM, Hans de Goede wrote:
> Hi,
> 
> On 10/03/2014 12:23 PM, Pali Rohár wrote:
>> On Friday 03 October 2014 12:18:51 Hans de Goede wrote:
>>>> On my E6440 machine it somehow working. When driver
>>>> doing ps/2 reset keyboard, touchpad and trackstick not
>>>> responding.
>>>
>>> Right, but I would expect that to be for only a short period
>>> of time, or does the whole reset take a significant amount of
>>> time ?
>>>
>>
>> It is one or two seconds which is OK for me.
> 
> Hmm, 1-2 seconds is quite long, not good. Lets see if the solution
> we've been discussing by private mail yields better results.

So further debugging has shown that once this problems happens on
these touchpads, they go into a mode where the spew random giberish,
and as such it seems that resetting them really seems best, so lets
do a v2 of this patchset and go with that.

Regards,

Hans
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