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From: Andy Shevchenko <andy.shevchenko@gmail.com>
To: Alexandre Belloni <alexandre.belloni@bootlin.com>
Cc: Jonathan Cameron <jic23@kernel.org>,
	Lars-Peter Clausen <lars@metafoo.de>,
	Peter Meerwald-Stadler <pmeerw@pmeerw.net>,
	linux-iio <linux-iio@vger.kernel.org>,
	devicetree <devicetree@vger.kernel.org>,
	linux-arm Mailing List <linux-arm-kernel@lists.infradead.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 3/6] iio:pressure:ms5637: limit available sample frequencies
Date: Sat, 12 Dec 2020 20:26:16 +0200	[thread overview]
Message-ID: <CAHp75Vf7A7e4RC2_wjizsPiGn3EjSPhxq4RA2vSQ0BtKaU1T0Q@mail.gmail.com> (raw)
In-Reply-To: <20201209234857.1521453-4-alexandre.belloni@bootlin.com>

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

  reply	other threads:[~2020-12-12 18:27 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-09 23:48 [PATCH 0/6] iio:pressure:ms5637: add ms5803 support Alexandre Belloni
2020-12-09 23:48 ` [PATCH 1/6] iio:pressure:ms5637: switch to probe_new Alexandre Belloni
2020-12-12 13:26   ` Andy Shevchenko
2020-12-13 17:04     ` Jonathan Cameron
2020-12-09 23:48 ` [PATCH 2/6] iio:pressure:ms5637: introduce hardware differentiation Alexandre Belloni
2020-12-13 17:12   ` Jonathan Cameron
2020-12-13 19:51     ` Alexandre Belloni
2020-12-09 23:48 ` [PATCH 3/6] iio:pressure:ms5637: limit available sample frequencies Alexandre Belloni
2020-12-12 18:26   ` Andy Shevchenko [this message]
2020-12-13 17:17     ` Jonathan Cameron
2020-12-09 23:48 ` [PATCH 4/6] iio:common:ms_sensors:ms_sensors_i2c: rework CRC calculation helper Alexandre Belloni
2020-12-09 23:48 ` [PATCH 5/6] iio:common:ms_sensors:ms_sensors_i2c: add support for alternative PROM layout Alexandre Belloni
2020-12-13 17:20   ` Jonathan Cameron
2020-12-13 19:34     ` Alexandre Belloni
2020-12-09 23:48 ` [PATCH 6/6] iio:pressure:ms5637: add ms5803 support Alexandre Belloni
2020-12-11  3:34   ` Rob Herring
2020-12-11  8:08     ` Alexandre Belloni

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