linux-kernel - Re: [PATCH v2 06/15] staging: iio: isl29028: move failure logging into isl29028_set_proxim

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Message-ID: <c28fddb6-9f02-ed02-7df6-fa235cd32dc0@kernel.org>
Date:   Sat, 21 Jan 2017 14:37:57 +0000
From:   Jonathan Cameron <jic23@...nel.org>
To:     Brian Masney <masneyb@...tation.org>, linux-iio@...r.kernel.org
Cc:     gregkh@...uxfoundation.org, devel@...verdev.osuosl.org,
        knaack.h@....de, lars@...afoo.de, pmeerw@...erw.net,
        linux-kernel@...r.kernel.org, ldewangan@...dia.com
Subject: Re: [PATCH v2 06/15] staging: iio: isl29028: move failure logging
 into isl29028_set_proxim_sampling()

On 17/01/17 09:24, Brian Masney wrote:
> When isl29028_set_proxim_sampling() fails, it was up to both callers to
> log the failure message. This patch moves the logging into
> isl29028_set_proxim_sampling() to reduce the overall amount of code in
> the driver.
> 
> Signed-off-by: Brian Masney <masneyb@...tation.org>
I'm not 100% convinced of the logic of this as a stand alone patch, but
it does no harm and is possibly slightly nicer!

Hence applied.

Thanks,

Jonathan
> ---
>  drivers/staging/iio/light/isl29028.c | 31 ++++++++++++++++---------------
>  1 file changed, 16 insertions(+), 15 deletions(-)
> 
> diff --git a/drivers/staging/iio/light/isl29028.c b/drivers/staging/iio/light/isl29028.c
> index 7074e62..bd85ccb 100644
> --- a/drivers/staging/iio/light/isl29028.c
> +++ b/drivers/staging/iio/light/isl29028.c
> @@ -78,18 +78,29 @@ struct isl29028_chip {
>  static int isl29028_set_proxim_sampling(struct isl29028_chip *chip,
>  					unsigned int sampling)
>  {
> +	struct device *dev = regmap_get_device(chip->regmap);
>  	static unsigned int prox_period[] = {800, 400, 200, 100, 75, 50, 12, 0};
> -	int sel;
>  	unsigned int period = DIV_ROUND_UP(1000, sampling);
> +	int sel, ret;
>  
>  	for (sel = 0; sel < ARRAY_SIZE(prox_period); ++sel) {
>  		if (period >= prox_period[sel])
>  			break;
>  	}
>  
> -	return regmap_update_bits(chip->regmap, ISL29028_REG_CONFIGURE,
> -				  ISL29028_CONF_PROX_SLP_MASK,
> -				  sel << ISL29028_CONF_PROX_SLP_SH);
> +	ret = regmap_update_bits(chip->regmap, ISL29028_REG_CONFIGURE,
> +				 ISL29028_CONF_PROX_SLP_MASK,
> +				 sel << ISL29028_CONF_PROX_SLP_SH);
> +
> +	if (ret < 0) {
> +		dev_err(dev, "%s(): Error %d setting the proximity sampling\n",
> +			__func__, ret);
> +		return ret;
> +	}
> +
> +	chip->prox_sampling = sampling;
> +
> +	return ret;
>  }
>  
>  static int isl29028_enable_proximity(struct isl29028_chip *chip, bool enable)
> @@ -291,14 +302,6 @@ static int isl29028_write_raw(struct iio_dev *indio_dev,
>  		}
>  
>  		ret = isl29028_set_proxim_sampling(chip, val);
> -		if (ret < 0) {
> -			dev_err(dev,
> -				"Setting proximity samp_freq fail, err %d\n",
> -				ret);
> -			break;
> -		}
> -
> -		chip->prox_sampling = val;
>  		break;
>  	case IIO_LIGHT:
>  		if (mask != IIO_CHAN_INFO_SCALE) {
> @@ -437,10 +440,8 @@ static int isl29028_chip_init_and_power_on(struct isl29028_chip *chip)
>  	}
>  
>  	ret = isl29028_set_proxim_sampling(chip, chip->prox_sampling);
> -	if (ret < 0) {
> -		dev_err(dev, "setting the proximity, err = %d\n", ret);
> +	if (ret < 0)
>  		return ret;
> -	}
>  
>  	ret = isl29028_set_als_scale(chip, chip->lux_scale);
>  	if (ret < 0)
>