On Fri, 3 Nov 2017 09:33:57 +0100
SF Markus Elfring <elfr...@users.sourceforge.net> wrote:

> From: Markus Elfring <elfr...@users.sourceforge.net>
> Date: Fri, 3 Nov 2017 09:26:28 +0100
> 
> * Add a jump target so that a call of the function "mutex_unlock" is stored
>   only twice in this function implementation.
> 
> * Replace two calls by goto statements.
> 
> This issue was detected by using the Coccinelle software.
> 
> Signed-off-by: Markus Elfring <elfr...@users.sourceforge.net>
Again, a reasonable little tidy up. Applied to the togreg branch
of iio.git and pushed out as testing for the autobuilders to check
we haven't missed anything.

Thanks,

Jonathan
> ---
>  drivers/staging/iio/cdc/ad7746.c | 17 +++++++++--------
>  1 file changed, 9 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/staging/iio/cdc/ad7746.c 
> b/drivers/staging/iio/cdc/ad7746.c
> index a124853a05f0..c4a864725376 100644
> --- a/drivers/staging/iio/cdc/ad7746.c
> +++ b/drivers/staging/iio/cdc/ad7746.c
> @@ -302,23 +302,24 @@ static inline ssize_t ad7746_start_calib(struct device 
> *dev,
>       mutex_lock(&chip->lock);
>       regval |= chip->config;
>       ret = i2c_smbus_write_byte_data(chip->client, AD7746_REG_CFG, regval);
> -     if (ret < 0) {
> -             mutex_unlock(&chip->lock);
> -             return ret;
> -     }
> +     if (ret < 0)
> +             goto unlock;
>  
>       do {
>               msleep(20);
>               ret = i2c_smbus_read_byte_data(chip->client, AD7746_REG_CFG);
> -             if (ret < 0) {
> -                     mutex_unlock(&chip->lock);
> -                     return ret;
> -             }
> +             if (ret < 0)
> +                     goto unlock;
> +
>       } while ((ret == regval) && timeout--);
>  
>       mutex_unlock(&chip->lock);
>  
>       return len;
> +
> +unlock:
> +     mutex_unlock(&chip->lock);
> +     return ret;
>  }
>  
>  static ssize_t ad7746_start_offset_calib(struct device *dev,

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