linux-kernel - Re: [git pull] Input updates for 3.18-rc4

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Date:	Wed, 19 Nov 2014 20:23:32 +0100
From:	Marcus Overhagen <marcus.overhagen@...il.com>
To:	Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc:	Benjamin Tissoires <benjamin.tissoires@...il.com>,
	Ulrik De Bie <ulrik.debie-os@...ig.org>,
	Hans de Goede <hdegoede@...hat.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	linux-input <linux-input@...r.kernel.org>,
	Jiri Kosina <jkosina@...e.cz>
Subject: Re: [git pull] Input updates for 3.18-rc4

Hi Dmitry,

luckily I found some time right now. I haven't reverted the original large
patch, but I tested your short patch and it fixes the problem for me.

regards
Marcus

On Wed, Nov 19, 2014 at 7:39 PM, Dmitry Torokhov
<dmitry.torokhov@...il.com> wrote:
> On Wed, Nov 19, 2014 at 07:20:21PM +0100, Marcus Overhagen wrote:
>> Hi,
>>
>> I will try reverting that, but may need until tomorrow or Friday.
>>
>> Just now I made a warm reboot from rc3 to rc5 and initially scrolling
>> behaviour was ok,  but after about a minute it went wrong and I got
>> this:
>>
>> [  179.705362] ------------[ cut here ]------------
>> [  179.705382] WARNING: CPU: 3 PID: 0 at
>> drivers/input/mouse/elantech.c:433
>> elantech_report_trackpoint.isra.5+0x199/0x1b0 [psmouse]()
>> [  179.705385] psmouse serio1: elantech: Unexpected trackpoint message
>
> Or just this for now:
>
> diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c
> index 3fcb6b3..294f613 100644
> --- a/drivers/input/mouse/elantech.c
> +++ b/drivers/input/mouse/elantech.c
> @@ -793,7 +793,7 @@ static int elantech_packet_check_v4(struct psmouse *psmouse)
>         unsigned char packet_type = packet[3] & 0x03;
>         bool sanity_check;
>
> -       if ((packet[3] & 0x0f) == 0x06)
> +       if ((packet[3] & 0x0f) == 0x06 && etd->tp_dev)
>                 return PACKET_TRACKPOINT;
>
>         /*
>
> --
> Dmitry
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