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

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Date:	Wed, 19 Nov 2014 10:39:21 -0800
From:	Dmitry Torokhov <dmitry.torokhov@...il.com>
To:	Marcus Overhagen <marcus.overhagen@...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

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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