[PATCH v2] staging: iio: ad7816: Switch to the gpio descriptor interface

Jonathan Cameron jic23 at kernel.org
Sun Oct 21 14:52:02 UTC 2018


On Thu, 18 Oct 2018 09:40:00 +0200
Lars-Peter Clausen <lars at metafoo.de> wrote:

> On 10/18/2018 09:28 AM, Phil Reid wrote:
> [...]
> >> +    chip->rdwr_pin = devm_gpiod_get(&spi_dev->dev, "rdwr", GPIOD_IN);
> >> +    if (IS_ERR(chip->rdwr_pin)) {
> >> +        ret = PTR_ERR(chip->rdwr_pin);
> >> +        dev_err(&spi_dev->dev, "Failed to request rdwr GPIO: %d\n",
> >> +            ret);
> >>           return ret;
> >>       }
> >> -    gpio_direction_input(chip->rdwr_pin);  
> > 
> > The RD/WR pin is an input to the AD78xx. So this doesn't make sense being
> > GPIOD_IN.  
> 
> One thing at a time. This patch is a straight forward conversion to the GPIO
> descriptor interface. It keeps the existing semantics of the driver as they are.
> 
> Now these semantics are obviously wrong and should be fixed but that should
> be a separate patch from changing the interface.
Agreed.  Useful to raise these issues however, and I've added a note to the
patch to bring this to anyone's attention should they be interesting.

Thanks,

Jonathan


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