Re: [PATCH v2 2/2] iio: potentiometer: Add driver support for AD5110

[Mugilraj Dhavachelvan]

On Thu, Aug 12, 2021 at 10:23:41PM +0530, Mugilraj Dhavachelvan wrote:
> On Wed, Aug 11, 2021 at 07:06:43PM +0300, Andy Shevchenko wrote:
> > On Wed, Aug 11, 2021 at 11:15 AM Lars-Peter Clausen <lars@xxxxxxxxxx> wrote:
> > > On 8/10/21 2:49 PM, Andy Shevchenko wrote:
> > > >
> > > >> +       data->tol = data->cfg->kohms * (val & GENMASK(6, 0)) * 10 / 8;
> > > >> +       if (!(val & BIT(7)))
> > > >> +               data->tol *= -1;
> > > > Shouldn't you simple use corresponding sign_extend*()?
> > > The data is encoded a sign-magnitude. sign_extend() works for two's
> > > complement numbers.
> > 
> > Good catch!
> > I'm wondering if it's a good idea to have a sign_magnitude_to_int()
> > helper or so?
> >
> So, What should I do now?
> 
Will send v3 with other changes and add this change in v4. Hope it's
okay.
> > -- 
> > With Best Regards,
> > Andy Shevchenko