Re: [PATCH 3/6] iio:pressure:ms5637: limit available sample frequencies

Andy Shevchenko
2020-12-12T18:27:33Z

On Thu, Dec 10, 2020 at 2:03 AM Alexandre Belloni
<alexandre.belloni@bootlin.com> wrote:
>
> Avoid exposing all the sampling frequencies for chip that only support a
> subset.

> +static ssize_t ms5637_show_samp_freq(struct device *dev, struct device_attribute *attr, char *buf)
> +{
> + struct iio_dev *indio_dev = dev_to_iio_dev(dev);
> + struct ms_tp_dev *dev_data = iio_priv(indio_dev);
> + int i, len = 0;
> +
> + for (i = 0; i <= dev_data->hw->max_res_index; i++)
> + len += scnprintf(buf + len, PAGE_SIZE - len, "%u ", ms5637_samp_freq[i]);

Doesn't IIO core have a helper?
Also, it's better to use sysfs_emit().

> + buf[len - 1] = '\n';
> +
> + return len;
> +}

--
With Best Regards,
Andy Shevchenko