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Input: alps - process_bitmap: round down when spreading adjescent fingers over 2 points
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 <hdegoede@redhat.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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@ -391,13 +391,13 @@ static int alps_process_bitmap(struct alps_data *priv,
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* adjacent fingers. Divide the single contact between the two points.
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*/
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if (fingers_x == 1) {
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i = x_low.num_bits / 2;
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i = (x_low.num_bits - 1) / 2;
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x_low.num_bits = x_low.num_bits - i;
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x_high.start_bit = x_low.start_bit + i;
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x_high.num_bits = max(i, 1);
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}
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if (fingers_y == 1) {
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i = y_low.num_bits / 2;
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i = (y_low.num_bits - 1) / 2;
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y_low.num_bits = y_low.num_bits - i;
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y_high.start_bit = y_low.start_bit + i;
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y_high.num_bits = max(i, 1);
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