linux-kernel - Re: [PATCH v2 12/15] staging: iio: isl29028: remove enable flag from isl29028_enable

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Date:   Sat, 21 Jan 2017 14:48:43 +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 12/15] staging: iio: isl29028: remove enable flag from
 isl29028_enable_proximity()

On 17/01/17 09:24, Brian Masney wrote:
> isl29028_enable_proximity() has a boolean argument named enable. This
> function is only called once and the enable flag is set to true in that
> call. This patch removes the enable parameter from that function.
> 
> Signed-off-by: Brian Masney <masneyb@...tation.org>
Applied.
> ---
> The device gets runtime power management support in the next patch in
> this set and autosuspends after two seconds of inactivity. Once the
> device suspends, the pin that drives the external LED for proximity
> sensing will only go high the next time that the user asks for a
> reading from the proximity sensor.
> 
> This patch also sets the stage for additional cleanups prior to the
> introduction of runtime power management support.
> 
>  drivers/staging/iio/light/isl29028.c | 10 ++++------
>  1 file changed, 4 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/staging/iio/light/isl29028.c b/drivers/staging/iio/light/isl29028.c
> index bc9c01d..f1b3651 100644
> --- a/drivers/staging/iio/light/isl29028.c
> +++ b/drivers/staging/iio/light/isl29028.c
> @@ -103,15 +103,13 @@ static int isl29028_set_proxim_sampling(struct isl29028_chip *chip,
>  	return ret;
>  }
>  
> -static int isl29028_enable_proximity(struct isl29028_chip *chip, bool enable)
> +static int isl29028_enable_proximity(struct isl29028_chip *chip)
>  {
>  	int ret;
> -	int val = 0;
>  
> -	if (enable)
> -		val = ISL29028_CONF_PROX_EN;
>  	ret = regmap_update_bits(chip->regmap, ISL29028_REG_CONFIGURE,
> -				 ISL29028_CONF_PROX_EN_MASK, val);
> +				 ISL29028_CONF_PROX_EN_MASK,
> +				 ISL29028_CONF_PROX_EN);
>  	if (ret < 0)
>  		return ret;
>  
> @@ -225,7 +223,7 @@ static int isl29028_read_proxim(struct isl29028_chip *chip, int *prox)
>  	int ret;
>  
>  	if (!chip->enable_prox) {
> -		ret = isl29028_enable_proximity(chip, true);
> +		ret = isl29028_enable_proximity(chip);
>  		if (ret < 0)
>  			return ret;
>  
>