linux-kernel - Re: [PATCH v6 5/5] iio: adc: ad9467: check for backend capabilities

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Message-ID: <aYTGkAf7Ue7goDnw@smile.fi.intel.com>
Date: Thu, 5 Feb 2026 18:34:24 +0200
From: Andy Shevchenko <andriy.shevchenko@...el.com>
To: Tomas Melin <tomas.melin@...sala.com>
Cc: Michael Hennerich <Michael.Hennerich@...log.com>,
	Nuno Sa <nuno.sa@...log.com>, Lars-Peter Clausen <lars@...afoo.de>,
	Jonathan Cameron <jic23@...nel.org>,
	David Lechner <dlechner@...libre.com>,
	Andy Shevchenko <andy@...nel.org>,
	Olivier Moysan <olivier.moysan@...s.st.com>,
	linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v6 5/5] iio: adc: ad9467: check for backend capabilities

On Thu, Feb 05, 2026 at 12:24:11PM +0000, Tomas Melin wrote:
> Add capability checks for operation with backends that do not necessarily
> support full set of features, but are otherwise compatible with the device.
> This ensures a fully functional device, but with limited capabilities.

...

> +	if (iio_backend_has_caps(st->back, IIO_BACKEND_CAP_BUFFER)) {
> +		ret = devm_iio_backend_request_buffer(&spi->dev, st->back,
> +						      indio_dev);

With

	struct device *dev = &spi->dev;

at the top, this one becomes exactly a 80 character line.
And in general it will help cleaning up the rest afterwards.

> +		if (ret)
> +			return ret;
> +	}

-- 
With Best Regards,
Andy Shevchenko