linux-kernel - [ 058/123] Input: sentelic - only report position of first finger as ST coordinates

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Message-Id: <20130109201506.011108897@linuxfoundation.org>
Date:	Wed,  9 Jan 2013 12:34:57 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	alan@...rguk.ukuu.org.uk,
	Christophe TORDEUX <christophe@...deux.net>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>
Subject: [ 058/123] Input: sentelic - only report position of first finger as ST coordinates

3.7-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: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/input/mouse/sentelic.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/input/mouse/sentelic.c
+++ b/drivers/input/mouse/sentelic.c
@@ -791,7 +791,7 @@ static psmouse_ret_t fsp_process_byte(st
 			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);
 		}


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