linux-kernel - [PATCH 193/222] Input: sentelic - only report position of first finger as ST coordinates

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Message-Id: <1358351822-7675-194-git-send-email-herton.krzesinski@canonical.com>
Date:	Wed, 16 Jan 2013 13:56:33 -0200
From:	Herton Ronaldo Krzesinski <herton.krzesinski@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Christophe TORDEUX <christophe@...deux.net>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Herton Ronaldo Krzesinski <herton.krzesinski@...onical.com>
Subject: [PATCH 193/222] Input: sentelic - only report position of first finger as ST coordinates

3.5.7.3 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Christophe TORDEUX <christophe@...deux.net>

commit a25461659050b913e114d282bf58823682eb56b6 upstream.

Report only the position of the first finger as absolute non-MT coordinates,
instead of reporting both fingers alternatively. Actual MT events are
unaffected.

This fixes horizontal and improves vertical scrolling with the touchpad.

Signed-off-by: Christophe TORDEUX <christophe@...deux.net>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>
Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski@...onical.com>
---
 drivers/input/mouse/sentelic.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/input/mouse/sentelic.c b/drivers/input/mouse/sentelic.c
index 3f5649f..bb74867 100644
--- a/drivers/input/mouse/sentelic.c
+++ b/drivers/input/mouse/sentelic.c
@@ -780,7 +780,7 @@ static psmouse_ret_t fsp_process_byte(struct psmouse *psmouse)
 			fsp_set_slot(dev, 0, fgrs > 0, abs_x, abs_y);
 			fsp_set_slot(dev, 1, false, 0, 0);
 		}
-		if (fgrs > 0) {
+		if (fgrs == 1 || (fgrs == 2 && !(packet[0] & FSP_PB0_MFMC_FGR2))) {
 			input_report_abs(dev, ABS_X, abs_x);
 			input_report_abs(dev, ABS_Y, abs_y);
 		}
-- 
1.7.9.5

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