On Wed, Nov 14, 2012 at 04:59:22PM +0100, Benjamin Tissoires wrote:
> This patch extracts the test (slot->frame == mt->frame) so that it can
> be used in third party drivers.
>
> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@xxxxxxxxx>
> ---
> drivers/input/input-mt.c | 2 +-
> include/linux/input/mt.h | 6 ++++++
> 2 files changed, 7 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/input/input-mt.c b/drivers/input/input-mt.c
> index c0ec7d4..475b9d4 100644
> --- a/drivers/input/input-mt.c
> +++ b/drivers/input/input-mt.c
> @@ -247,7 +247,7 @@ void input_mt_sync_frame(struct input_dev *dev)
>
> if (mt->flags & INPUT_MT_DROP_UNUSED) {
> for (s = mt->slots; s != mt->slots + mt->num_slots; s++) {
> - if (s->frame == mt->frame)
> + if (input_mt_is_used(mt, s))
> continue;
> input_mt_slot(dev, s - mt->slots);
> input_event(dev, EV_ABS, ABS_MT_TRACKING_ID, -1);
> diff --git a/include/linux/input/mt.h b/include/linux/input/mt.h
> index cc5cca7..2e86bd0 100644
> --- a/include/linux/input/mt.h
> +++ b/include/linux/input/mt.h
> @@ -69,6 +69,12 @@ static inline bool input_mt_is_active(const struct input_mt_slot *slot)
> return input_mt_get_value(slot, ABS_MT_TRACKING_ID) >= 0;
> }
>
> +static inline bool input_mt_is_used(const struct input_mt *mt,
> + const struct input_mt_slot *slot)
> +{
> + return slot->frame == mt->frame;
> +}
> +
> int input_mt_init_slots(struct input_dev *dev, unsigned int num_slots,
> unsigned int flags);
> void input_mt_destroy_slots(struct input_dev *dev);
> --
> 1.8.0
>
Reviewed-by: Henrik Rydberg <rydberg@xxxxxxxxxxx>
Thanks,
Henrik
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