Re: [PATCH 6/7] iio: adc: ad485x: add ad485x driver

From: Andy Shevchenko
Date: Thu Sep 26 2024 - 11:01:28 EST


On Thu, Sep 26, 2024 at 04:39:18PM +0200, David Lechner wrote:
> On Mon, Sep 23, 2024 at 12:17 PM Antoniu Miclaus
> <antoniu.miclaus@xxxxxxxxxx> wrote:

...

> > +static int ad485x_find_opt(bool *field, u32 size, u32 *ret_start)
> > +{
> > + int i, cnt = 0, max_cnt = 0, start, max_start = 0;
> > +
> > + for (i = 0, start = -1; i < size; i++) {
> > + if (field[i] == 0) {
> > + if (start == -1)
> > + start = i;
> > + cnt++;
> > + } else {
> > + if (cnt > max_cnt) {
> > + max_cnt = cnt;
> > + max_start = start;
> > + }
> > + start = -1;
> > + cnt = 0;
> > + }
> > + }
> > +
> > + if (cnt > max_cnt) {
> > + max_cnt = cnt;
> > + max_start = start;
> > + }
> > +
> > + if (!max_cnt)
> > + return -EIO;
>
> EIO seems an odd choice since this function doesn't actually do any
> I/O. Maybe EINVAL would be better?

I would even go with -ENOENT as function called 'find'.

> > + *ret_start = max_start;
> > +
> > + return max_cnt;
> > +}

--
With Best Regards,
Andy Shevchenko