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authorHenrik Rydberg <rydberg@euromail.se>2010-12-18 15:42:30 +0100
committerHenrik Rydberg <rydberg@euromail.se>2010-12-22 11:15:28 +0100
commit4f56ce929cab45a3a6e1a81700da52bb9bdbfc0f (patch)
treec6f0d34cfae5ce142f8840c445fe2fb9eef1c7d4 /drivers/input/mouse/synaptics.c
parentfec6e5252b542e748871c88f8455e69ae73ea156 (diff)
Input: synaptics - ignore bogus mt packet
In multitouch mode, at least one device (fw: 7.4 id: 0x1c0b1) sometimes sends a final main packet with x == 1. Since the normal values are above 1472, this is clearly bogus. At the same time, a two-finger touch is signaled, even though only one finger was on the pad to begin with. This patch ignores the packet altogether, removing the problem. Acked-by: Chris Bagwell <chris@cnpbagwell.com> Acked-by: Chase Douglas <chase.douglas@canonical.com> Acked-by: Dmitry Torokhov <dtor@mail.ru> Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
Diffstat (limited to 'drivers/input/mouse/synaptics.c')
-rw-r--r--drivers/input/mouse/synaptics.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c
index 6514928fd35..720729afe6d 100644
--- a/drivers/input/mouse/synaptics.c
+++ b/drivers/input/mouse/synaptics.c
@@ -548,7 +548,7 @@ static void synaptics_process_packet(struct psmouse *psmouse)
return;
}
- if (hw.z > 0) {
+ if (hw.z > 0 && hw.x > 1) {
num_fingers = 1;
finger_width = 5;
if (SYN_CAP_EXTENDED(priv->capabilities)) {
@@ -582,7 +582,7 @@ static void synaptics_process_packet(struct psmouse *psmouse)
if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1);
if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);
- if (hw.z > 0) {
+ if (num_fingers > 0) {
input_report_abs(dev, ABS_X, hw.x);
input_report_abs(dev, ABS_Y, YMAX_NOMINAL + YMIN_NOMINAL - hw.y);
}