This is a note to let you know that I've just added the patch titled Input: synaptics - fix handling of disabling gesture mode to the 4.2-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-fix-handling-of-disabling-gesture-mode.patch and it can be found in the queue-4.2 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From e51e38494a8ecc18650efb0c840600637891de2c Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx> Date: Thu, 20 Aug 2015 14:28:48 -0700 Subject: Input: synaptics - fix handling of disabling gesture mode From: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx> commit e51e38494a8ecc18650efb0c840600637891de2c upstream. Bit 2 of the mode byte has dual meaning: it can disable reporting of gestures when touchpad works in Relative mode or normal Absolute mode, or it can enable so called Extended W-Mode when touchpad uses enhanced Absolute mode (W-mode). The extended W-Mode confuses our driver and causes missing button presses on some Thinkpads (x250, T450s), so let's make sure we do not enable it. Also, according to the spec W mode "... bit is defined only in Absolute mode on pads whose capExtended capability bit is set. In Relative mode and in TouchPads without this capability, the bit is reserved and should be left at 0.", so let's make sure we respect this requirement as well. Reported-by: Nick Bowler <nbowler@xxxxxxxxxx> Suggested-by: Gabor Balla <gaborwho@xxxxxxxxx> Tested-by: Gabor Balla <gaborwho@xxxxxxxxx> Tested-by: Nick Bowler <nbowler@xxxxxxxxxx> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/input/mouse/synaptics.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) --- a/drivers/input/mouse/synaptics.c +++ b/drivers/input/mouse/synaptics.c @@ -519,14 +519,18 @@ static int synaptics_set_mode(struct psm struct synaptics_data *priv = psmouse->private; priv->mode = 0; - if (priv->absolute_mode) + + if (priv->absolute_mode) { priv->mode |= SYN_BIT_ABSOLUTE_MODE; - if (priv->disable_gesture) + if (SYN_CAP_EXTENDED(priv->capabilities)) + priv->mode |= SYN_BIT_W_MODE; + } + + if (!SYN_MODE_WMODE(priv->mode) && priv->disable_gesture) priv->mode |= SYN_BIT_DISABLE_GESTURE; + if (psmouse->rate >= 80) priv->mode |= SYN_BIT_HIGH_RATE; - if (SYN_CAP_EXTENDED(priv->capabilities)) - priv->mode |= SYN_BIT_W_MODE; if (synaptics_mode_cmd(psmouse, priv->mode)) return -1; Patches currently in stable-queue which might be from dmitry.torokhov@xxxxxxxxx are queue-4.2/input-evdev-do-not-report-errors-form-flush.patch queue-4.2/input-synaptics-fix-handling-of-disabling-gesture-mode.patch -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html