linux-kernel - Re: [PATCH 18/38] iio: sensors-core: st: Allow full-scale to be an optional feature

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Message-ID: <523492BB.5070004@kernel.org>
Date:	Sat, 14 Sep 2013 17:45:47 +0100
From:	Jonathan Cameron <jic23@...nel.org>
To:	Lee Jones <lee.jones@...aro.org>
CC:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	arnd@...db.de, linus.walleij@...aro.org, denis.ciocca@...com,
	linux-iio@...r.kernel.org
Subject: Re: [PATCH 18/38] iio: sensors-core: st: Allow full-scale to be an
 optional feature

On 09/10/13 13:49, Lee Jones wrote:
> Some chips either don't support it or fail to provide adequate documentation,
> so sometimes it's impossible to enable the feature even if it is supported.
> 
> Signed-off-by: Lee Jones <lee.jones@...aro.org>
Applied to the togreg branch of iio.git

Thanks
> ---
>  drivers/iio/common/st_sensors/st_sensors_core.c | 11 +++++++----
>  drivers/iio/pressure/st_pressure_core.c         |  6 ++++--
>  2 files changed, 11 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/iio/common/st_sensors/st_sensors_core.c b/drivers/iio/common/st_sensors/st_sensors_core.c
> index 965ee22..eb261a5 100644
> --- a/drivers/iio/common/st_sensors/st_sensors_core.c
> +++ b/drivers/iio/common/st_sensors/st_sensors_core.c
> @@ -235,10 +235,13 @@ int st_sensors_init_sensor(struct iio_dev *indio_dev,
>  	if (err < 0)
>  		goto init_error;
>  
> -	err = st_sensors_set_fullscale(indio_dev,
> -						sdata->current_fullscale->num);
> -	if (err < 0)
> -		goto init_error;
> +	if (sdata->current_fullscale) {
> +		err = st_sensors_set_fullscale(indio_dev,
> +					       sdata->current_fullscale->num);
> +		if (err < 0)
> +			goto init_error;
> +	} else
> +		dev_info(&indio_dev->dev, "Full-scale not possible\n");
>  
>  	err = st_sensors_set_odr(indio_dev, sdata->odr);
>  	if (err < 0)
> diff --git a/drivers/iio/pressure/st_pressure_core.c b/drivers/iio/pressure/st_pressure_core.c
> index ceebd3c..16cfbc5 100644
> --- a/drivers/iio/pressure/st_pressure_core.c
> +++ b/drivers/iio/pressure/st_pressure_core.c
> @@ -226,8 +226,10 @@ int st_press_common_probe(struct iio_dev *indio_dev,
>  	indio_dev->channels = pdata->sensor->ch;
>  	indio_dev->num_channels = ARRAY_SIZE(st_press_channels);
>  
> -	pdata->current_fullscale = (struct st_sensor_fullscale_avl *)
> -						&pdata->sensor->fs.fs_avl[0];
> +	if (pdata->sensor->fs.addr != 0)
> +		pdata->current_fullscale = (struct st_sensor_fullscale_avl *)
> +			&pdata->sensor->fs.fs_avl[0];
> +
>  	pdata->odr = pdata->sensor->odr.odr_avl[0].hz;
>  
>  	if (!plat_data)
> 
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