Re: [PATCH v2 04/19] staging: iio: resolver: ad2s1210: fix not restoring sample gpio in channel read

[Jonathan Cameron <jic23@kernel.org>]

On Thu, 21 Sep 2023 09:43:45 -0500
David Lechner <dlechner@baylibre.com> wrote:

> In theory, this code path should not be reachable because of the
> previous switch statement. But just in case we should make sure we
> are restoring the SAMPLE gpio to its original state before returning
> in addition to releasing the mutex lock.
> 
> Signed-off-by: David Lechner <dlechner@baylibre.com>
Applied to the togreg branch of iio.git and pushed out as testing
for all the normal reasons.

Thanks,

Jonathan

> ---
>  drivers/staging/iio/resolver/ad2s1210.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/staging/iio/resolver/ad2s1210.c b/drivers/staging/iio/resolver/ad2s1210.c
> index 84743e31261a..0bdd5a30d45d 100644
> --- a/drivers/staging/iio/resolver/ad2s1210.c
> +++ b/drivers/staging/iio/resolver/ad2s1210.c
> @@ -510,8 +510,8 @@ static int ad2s1210_read_raw(struct iio_dev *indio_dev,
>  		ret = IIO_VAL_INT;
>  		break;
>  	default:
> -		mutex_unlock(&st->lock);
> -		return -EINVAL;
> +		ret = -EINVAL;
> +		break;
>  	}
>  
>  error_ret: