linux-kernel - Re: [PATCH] iio: hi8435: Use gpiod_set_value

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Date:   Sun, 11 Aug 2019 09:50:10 +0100
From:   Jonathan Cameron <jic23@...nel.org>
To:     Andrey Smirnov <andrew.smirnov@...il.com>
Cc:     linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org,
        Chris Healy <cphealy@...il.com>,
        Nikita Yushchenko <nikita.yoush@...entembedded.com>,
        Vladimir Barinov <vladimir.barinov@...entembedded.com>
Subject: Re: [PATCH] iio: hi8435: Use gpiod_set_value_cansleep()

+CC Nikita, Valdimir.

On Sat, 10 Aug 2019 22:45:11 -0700
Andrey Smirnov <andrew.smirnov@...il.com> wrote:

> Use gpiod_set_value_cansleep() instead of gpiod_set_value() to support
> the case when reset pin is connected to a GPIO expander. See ZII VF610
> SCU4 AIB for one such example.
> 
> Signed-off-by: Andrey Smirnov <andrew.smirnov@...il.com>
> Cc: linux-kernel@...r.kernel.org
> Cc: linux-iio@...r.kernel.org
> Cc: Jonathan Cameron <jic23@...nel.org>
> Cc: Chris Healy <cphealy@...il.com>

Seems sensible to me so I've applied it to the togreg branch of iio.git and
pushed out as testing for the autobuilder to play with it.

Still time for last minute comments if anyone has them though.

Thanks,

Jonathan

> ---
>  drivers/iio/adc/hi8435.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/iio/adc/hi8435.c b/drivers/iio/adc/hi8435.c
> index 35951c47004e..c15f0e154e4d 100644
> --- a/drivers/iio/adc/hi8435.c
> +++ b/drivers/iio/adc/hi8435.c
> @@ -477,7 +477,7 @@ static int hi8435_probe(struct spi_device *spi)
>  		hi8435_writeb(priv, HI8435_CTRL_REG, 0);
>  	} else {
>  		udelay(5);
> -		gpiod_set_value(reset_gpio, 1);
> +		gpiod_set_value_cansleep(reset_gpio, 1);
>  	}
>  
>  	spi_set_drvdata(spi, idev);