This fixes 2 fingers at the same height or width on the touchpad getting reported at different y / x coordinates.
Note num_bits is always at least 1. Signed-off-by: Hans de Goede <[email protected]> --- drivers/input/mouse/alps.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c index ebf8187..f8c04fc 100644 --- a/drivers/input/mouse/alps.c +++ b/drivers/input/mouse/alps.c @@ -391,13 +391,13 @@ static int alps_process_bitmap(struct alps_data *priv, * adjacent fingers. Divide the single contact between the two points. */ if (fingers_x == 1) { - i = x_low.num_bits / 2; + i = (x_low.num_bits - 1) / 2; x_low.num_bits = x_low.num_bits - i; x_high.start_bit = x_low.start_bit + i; x_high.num_bits = max(i, 1); } if (fingers_y == 1) { - i = y_low.num_bits / 2; + i = (y_low.num_bits - 1) / 2; y_low.num_bits = y_low.num_bits - i; y_high.start_bit = y_low.start_bit + i; y_high.num_bits = max(i, 1); -- 2.0.0 -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
