diff options
| author | Nikolai Kondrashov <spbnick@gmail.com> | 2022-05-08 18:01:43 +0200 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2022-05-11 14:19:27 +0200 |
| commit | fbc08b4e8ea5582029dc3c05c954d4d157e4d3f8 (patch) | |
| tree | 249de3edbf8355f0b35db22bc408787d0ec7f9e5 /drivers/hid/hid-uclogic-core.c | |
| parent | caf7e93479c73374a9fcad29f90477280444584e (diff) | |
| download | linux-fbc08b4e8ea5582029dc3c05c954d4d157e4d3f8.tar.bz2 | |
HID: uclogic: Always shift touch reports to zero
Always decrement touch report values to have the range start with zero,
regardless if flipped or not. This fixes the future non-flipped touch
strip reports.
Signed-off-by: Nikolai Kondrashov <spbnick@gmail.com>
Signed-off-by: José Expósito <jose.exposito89@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid/hid-uclogic-core.c')
| -rw-r--r-- | drivers/hid/hid-uclogic-core.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/drivers/hid/hid-uclogic-core.c b/drivers/hid/hid-uclogic-core.c index cc53625ed1f7..c4ab94d58a0f 100644 --- a/drivers/hid/hid-uclogic-core.c +++ b/drivers/hid/hid-uclogic-core.c @@ -386,15 +386,16 @@ static int uclogic_raw_event_frame( } /* If need to, and can, transform the touch ring reports */ - if (frame->touch_byte > 0 && frame->touch_byte < size && - frame->touch_flip_at != 0) { + if (frame->touch_byte > 0 && frame->touch_byte < size) { __s8 value = data[frame->touch_byte]; - if (value != 0) { - value = frame->touch_flip_at - value; - if (value < 0) - value = frame->touch_max + value; - data[frame->touch_byte] = value; + if (value != 0) { + if (frame->touch_flip_at != 0) { + value = frame->touch_flip_at - value; + if (value <= 0) + value = frame->touch_max + value; + } + data[frame->touch_byte] = value - 1; } } |