diff options
| author | Henrik Rydberg <rydberg@euromail.se> | 2010-12-18 15:42:30 +0100 |
|---|---|---|
| committer | Henrik Rydberg <rydberg@euromail.se> | 2010-12-22 11:15:28 +0100 |
| commit | 4f56ce929cab45a3a6e1a81700da52bb9bdbfc0f (patch) | |
| tree | c6f0d34cfae5ce142f8840c445fe2fb9eef1c7d4 | |
| parent | Input: synaptics - add multi-finger and semi-mt support (diff) | |
| download | linux-4f56ce929cab45a3a6e1a81700da52bb9bdbfc0f.tar.xz linux-4f56ce929cab45a3a6e1a81700da52bb9bdbfc0f.zip | |
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>
| -rw-r--r-- | drivers/input/mouse/synaptics.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c index 6514928fd35f..720729afe6dc 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); } |