3.13.11-ckt28 -stable review patch. If anyone has any objections, please let me know.
------------------ From: Dmitry Torokhov <[email protected]> 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 <[email protected]> Suggested-by: Gabor Balla <[email protected]> Tested-by: Gabor Balla <[email protected]> Tested-by: Nick Bowler <[email protected]> Signed-off-by: Dmitry Torokhov <[email protected]> Signed-off-by: Kamal Mostafa <[email protected]> --- drivers/input/mouse/synaptics.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c index 17b0285..e772a2a 100644 --- a/drivers/input/mouse/synaptics.c +++ b/drivers/input/mouse/synaptics.c @@ -486,14 +486,18 @@ static int synaptics_set_mode(struct psmouse *psmouse) 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; -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
