linux-kernel - Re: [PATCH 8/8] mfd: lm3533: Simplify function return logic

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Message-ID: <20150930210437.GF4284@localhost>
Date:	Wed, 30 Sep 2015 17:04:37 -0400
From:	Johan Hovold <johan@...nel.org>
To:	Javier Martinez Canillas <javier@....samsung.com>
Cc:	linux-kernel@...r.kernel.org, Lee Jones <lee.jones@...aro.org>,
	Samuel Ortiz <sameo@...ux.intel.com>
Subject: Re: [PATCH 8/8] mfd: lm3533: Simplify function return logic

On Tue, Sep 29, 2015 at 01:26:08PM +0200, Javier Martinez Canillas wrote:
> The invoked functions already return zero on success or a negative
> errno code so there is no need to open code the logic in the caller.
> 
> Signed-off-by: Javier Martinez Canillas <javier@....samsung.com>

I do not consider this an improvement in any way and suggest this patch
is dropped.

> ---
> 
>  drivers/mfd/lm3533-core.c | 12 ++----------
>  1 file changed, 2 insertions(+), 10 deletions(-)
> 
> diff --git a/drivers/mfd/lm3533-core.c b/drivers/mfd/lm3533-core.c
> index 643f3750e830..193ecee1fa7e 100644
> --- a/drivers/mfd/lm3533-core.c
> +++ b/drivers/mfd/lm3533-core.c
> @@ -472,11 +472,7 @@ static int lm3533_device_setup(struct lm3533 *lm3533,
>  	if (ret)
>  		return ret;
>  
> -	ret = lm3533_set_boost_ovp(lm3533, pdata->boost_ovp);
> -	if (ret)
> -		return ret;
> -
> -	return 0;
> +	return lm3533_set_boost_ovp(lm3533, pdata->boost_ovp);

You're saving a few lines of code but instead introduce asymmetries and
obscure the fact that the function returns zero on success.

Johan
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