From: Hans de Goede Date: Sat, 26 Jul 2014 05:41:51 +0000 (-0700) Subject: Input: alps - process_bitmap: fix counting of high point bits X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=105affbfd588d5aec4171234051f7d589f7e62c1;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git Input: alps - process_bitmap: fix counting of high point bits 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 Signed-off-by: Dmitry Torokhov --- diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c index c6af590a07d3..5b35f4fc4d2f 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; }