alps_process_bitmap was resetting the point bit-count as soon as it saw
2 0 bits in a row. This means that unless the high point actually is at
the end of the bitmap, it would always get its num_bits set to 0.
Instead reset num_bits to 0 on a 0-1 transition, so that with > 2 fingers
we only count the number of bits occupied by the highest finger.
Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
---
drivers/input/mouse/alps.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c
index 00c735d..ebf8187 100644
--- a/drivers/input/mouse/alps.c
+++ b/drivers/input/mouse/alps.c
@@ -342,14 +342,13 @@ static void alps_get_bitmap_points(unsigned int map,
if (bit) {
if (!prev_bit) {
point->start_bit = i;
+ point->num_bits = 0;
(*fingers)++;
}
point->num_bits++;
} else {
if (prev_bit)
point = high;
- else
- point->num_bits = 0;
}
prev_bit = bit;
}
--
2.0.0
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