linux-kernel - Re: [PATCH 20/38] iio: sensors-core: st: Clean-up error handling in st_sensors_init

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Message-ID: <523494D2.2020808@kernel.org>
Date:	Sat, 14 Sep 2013 17:54:42 +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,
	jic23@....ac.uk, arnd@...db.de, linus.walleij@...aro.org,
	denis.ciocca@...com, linux-iio@...r.kernel.org
Subject: Re: [PATCH 20/38] iio: sensors-core: st: Clean-up error handling
 in st_sensors_init_sensor()

On 09/10/13 13:49, Lee Jones wrote:
> Strip out all those unnecessary gotos and just return the error right away.
> 
> Aids to simplicity and reduces code.
> 
> Signed-off-by: Lee Jones <lee.jones@...aro.org>
This is fine except in that it is intertwined with the previous patch.

> ---
>  drivers/iio/common/st_sensors/st_sensors_core.c | 18 +++++++-----------
>  1 file changed, 7 insertions(+), 11 deletions(-)
> 
> diff --git a/drivers/iio/common/st_sensors/st_sensors_core.c b/drivers/iio/common/st_sensors/st_sensors_core.c
> index b86cad2..8c4c54c 100644
> --- a/drivers/iio/common/st_sensors/st_sensors_core.c
> +++ b/drivers/iio/common/st_sensors/st_sensors_core.c
> @@ -208,8 +208,7 @@ int st_sensors_set_drdy_int_pin(struct iio_dev *indio_dev,
>  		if (sdata->sensor->drdy_irq.mask_int1 == 0) {
>  			dev_err(&indio_dev->dev,
>  					"DRDY on INT1 not available.\n");
> -			err = -EINVAL;
> -			goto init_error;
> +			return -EINVAL;
>  		}
>  		sdata->drdy_int_pin = 1;
>  		break;
> @@ -217,15 +216,13 @@ int st_sensors_set_drdy_int_pin(struct iio_dev *indio_dev,
>  		if (sdata->sensor->drdy_irq.mask_int2 == 0) {
>  			dev_err(&indio_dev->dev,
>  					"DRDY on INT2 not available.\n");
> -			err = -EINVAL;
> -			goto init_error;
> +			return -EINVAL;
>  		}
>  		sdata->drdy_int_pin = 2;
>  		break;
>  	default:
>  		dev_err(&indio_dev->dev, "DRDY on pdata not valid.\n");
> -		err = -EINVAL;
> -		goto init_error;
> +		return -EINVAL;
>  	}
>  
>  	return 0;
> @@ -244,29 +241,28 @@ int st_sensors_init_sensor(struct iio_dev *indio_dev,
>  
>  	err = st_sensors_set_enable(indio_dev, false);
>  	if (err < 0)
> -		goto init_error;
> +		return err;
>  
>  	if (sdata->current_fullscale) {
>  		err = st_sensors_set_fullscale(indio_dev,
>  					       sdata->current_fullscale->num);
>  		if (err < 0)
> -			goto init_error;
> +			return err;
>  	} else
>  		dev_info(&indio_dev->dev, "Full-scale not possible\n");
>  
>  	err = st_sensors_set_odr(indio_dev, sdata->odr);
>  	if (err < 0)
> -		goto init_error;
> +		return err;
>  
>  	/* set BDU */
>  	err = st_sensors_write_data_with_mask(indio_dev,
>  			sdata->sensor->bdu.addr, sdata->sensor->bdu.mask, true);
>  	if (err < 0)
> -		goto init_error;
> +		return err;
>  
>  	err = st_sensors_set_axis_enable(indio_dev, ST_SENSORS_ENABLE_ALL_AXIS);
>  
> -init_error:
>  	return err;
>  }
>  EXPORT_SYMBOL(st_sensors_init_sensor);
> 
--
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