On Fri, Nov 13, 2020 at 08:42:37AM +0100, Benjamin Tissoires wrote:
> On Fri, Nov 13, 2020 at 8:40 AM Dmitry Torokhov
> <dmitry.torok...@gmail.com> wrote:
> >
> > On Thu, Nov 12, 2020 at 11:01:57AM +0000, Lee Jones wrote:
> > > Fixes the following W=1 kernel build warning(s):
> > >
> > > drivers/input/touchscreen/surface3_spi.c: In function
> > > ‘surface3_spi_process_touch’:
> > > drivers/input/touchscreen/surface3_spi.c:97:6: warning: variable
> > > ‘timestamp’ set but not used [-Wunused-but-set-variable]
> > >
> > > Cc: Dmitry Torokhov <dmitry.torok...@gmail.com>
> > > Cc: Henrik Rydberg <rydb...@bitmath.org>
> > > Cc: Benjamin Tissoires <benjamin.tissoi...@gmail.com>
> > > Cc: linux-in...@vger.kernel.org
> > > Signed-off-by: Lee Jones <lee.jo...@linaro.org>
> > > ---
> > > drivers/input/touchscreen/surface3_spi.c | 2 --
> > > 1 file changed, 2 deletions(-)
> > >
> > > diff --git a/drivers/input/touchscreen/surface3_spi.c
> > > b/drivers/input/touchscreen/surface3_spi.c
> > > index ce4828b1415a8..72dc4c562a4e1 100644
> > > --- a/drivers/input/touchscreen/surface3_spi.c
> > > +++ b/drivers/input/touchscreen/surface3_spi.c
> > > @@ -94,9 +94,7 @@ static void surface3_spi_report_touch(struct
> > > surface3_ts_data *ts_data,
> > >
> > > static void surface3_spi_process_touch(struct surface3_ts_data *ts_data,
> > > u8 *data)
> > > {
> > > - u16 timestamp;
> > > unsigned int i;
> > > - timestamp = get_unaligned_le16(&data[15]);
> >
> > Benjamin, should we pass timing data on to userspace instead?
>
> Last time I checked, libinput was not using the HW timestamp. So I
> don't mind dropping it.
I'm assuming this would be passed on as MSC_TIMESTAMP?
I never found the time implementing this and I mask MSC_TIMESTAMP on most
devices anyway (except for Dell's i2c touchpads where I need it to work
around a fw bug). so at least from libinput's POV it wouldn't have any
effect either way.
Cheers,
Peter
>
> Not sure if chrome/android uses it.
>
> Cheers,
> Benjamin
>
> >
> > >
> > > for (i = 0; i < 13; i++) {
> > > struct surface3_ts_data_finger *finger;
> > > --
> > > 2.25.1
> > >
> >
> > Thanks.
> >
> > --
> > Dmitry
