This is a note to let you know that I've just added the patch titled
Input: synaptics - handle spurious release of trackstick buttons
to the 3.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
input-synaptics-handle-spurious-release-of-trackstick-buttons.patch
and it can be found in the queue-3.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From ebc80840b850db72f7ae84fbcf77630ae5409629 Mon Sep 17 00:00:00 2001
From: Benjamin Tissoires <benjamin.tissoires@xxxxxxxxxx>
Date: Sun, 8 Mar 2015 22:32:43 -0700
Subject: Input: synaptics - handle spurious release of trackstick buttons
From: Benjamin Tissoires <benjamin.tissoires@xxxxxxxxxx>
commit ebc80840b850db72f7ae84fbcf77630ae5409629 upstream.
The Fimware 8.1 has a bug in which the extra buttons are only sent when the
ExtBit is 1. This should be fixed in a future FW update which should have
a bump of the minor version.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@xxxxxxxxxx>
Acked-by: Hans de Goede <hdegoede@xxxxxxxxxx>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/input/mouse/synaptics.c | 33 +++++++++++++++++++++++++--------
1 file changed, 25 insertions(+), 8 deletions(-)
--- a/drivers/input/mouse/synaptics.c
+++ b/drivers/input/mouse/synaptics.c
@@ -820,14 +820,36 @@ static void synaptics_report_semi_mt_dat
}
}
-static void synaptics_report_buttons(struct psmouse *psmouse,
- const struct synaptics_hw_state *hw)
+static void synaptics_report_ext_buttons(struct psmouse *psmouse,
+ const struct synaptics_hw_state *hw)
{
struct input_dev *dev = psmouse->dev;
struct synaptics_data *priv = psmouse->private;
int ext_bits = (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) + 1) >> 1;
int i;
+ if (!SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap))
+ return;
+
+ /* Bug in FW 8.1, buttons are reported only when ExtBit is 1 */
+ if (SYN_ID_FULL(priv->identity) == 0x801 &&
+ !((psmouse->packet[0] ^ psmouse->packet[3]) & 0x02))
+ return;
+
+ for (i = 0; i < ext_bits; i++) {
+ input_report_key(dev, BTN_0 + 2 * i,
+ hw->ext_buttons & (1 << i));
+ input_report_key(dev, BTN_1 + 2 * i,
+ hw->ext_buttons & (1 << (i + ext_bits)));
+ }
+}
+
+static void synaptics_report_buttons(struct psmouse *psmouse,
+ const struct synaptics_hw_state *hw)
+{
+ struct input_dev *dev = psmouse->dev;
+ struct synaptics_data *priv = psmouse->private;
+
input_report_key(dev, BTN_LEFT, hw->left);
input_report_key(dev, BTN_RIGHT, hw->right);
@@ -839,12 +861,7 @@ static void synaptics_report_buttons(str
input_report_key(dev, BTN_BACK, hw->down);
}
- for (i = 0; i < ext_bits; i++) {
- input_report_key(dev, BTN_0 + 2 * i,
- hw->ext_buttons & (1 << i));
- input_report_key(dev, BTN_1 + 2 * i,
- hw->ext_buttons & (1 << (i + ext_bits)));
- }
+ synaptics_report_ext_buttons(psmouse, hw);
}
static void synaptics_report_slot(struct input_dev *dev, int slot,
Patches currently in stable-queue which might be from benjamin.tissoires@xxxxxxxxxx are
queue-3.19/input-synaptics-query-min-dimensions-for-fw-v8.1.patch
queue-3.19/input-synaptics-fix-middle-button-on-lenovo-2015-products.patch
queue-3.19/input-synaptics-do-not-retrieve-the-board-id-on-old-firmwares.patch
queue-3.19/input-synaptics-handle-spurious-release-of-trackstick-buttons.patch
queue-3.19/input-synaptics-skip-quirks-when-post-2013-dimensions.patch
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