linux-kernel - Re: [PATCH 05/11] staging: iio: adc: ad7606: Add support for threaded irq

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Date:   Thu, 13 Dec 2018 16:28:54 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Stefan Popa <stefan.popa@...log.com>
Cc:     jic23@...nel.org, robh+dt@...nel.org, mark.rutland@....com,
        devel@...verdev.osuosl.org, lars@...afoo.de,
        Michael.Hennerich@...log.com, linux-iio@...r.kernel.org,
        gregkh@...uxfoundation.org, linux-kernel@...r.kernel.org,
        pmeerw@...erw.net, knaack.h@....de, stefan.popa@...log.co
Subject: Re: [PATCH 05/11] staging: iio: adc: ad7606: Add support for
 threaded irq

On Thu, Dec 13, 2018 at 02:46:17PM +0200, Stefan Popa wrote:
> +static int ad7606_buffer_predisable(struct iio_dev *indio_dev)
> +{
> +	struct ad7606_state *st = iio_priv(indio_dev);
> +	int ret;
> +
> +	reinit_completion(&st->completion);
> +	gpiod_set_value(st->gpio_convst, 1);
> +	ret = wait_for_completion_timeout(&st->completion,
> +					  msecs_to_jiffies(1000));

We don't use this "ret".  It will introduce a set but not used warning
on new GCCs or static checkers or something.

> +	gpiod_set_value(st->gpio_convst, 0);
> +
> +	return iio_triggered_buffer_predisable(indio_dev);
> +}

regards,
dan carpenter