linux-kernel - Re: [PATCH -next] memory: atmel-ebi: use PTR_ERR_OR

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Date:	Wed, 6 Jul 2016 14:18:17 +0200
From:	Alexandre Belloni <alexandre.belloni@...e-electrons.com>
To:	weiyj_lk@....com
Cc:	Boris Brezillon <boris.brezillon@...e-electrons.com>,
	Nicolas Ferre <nicolas.ferre@...el.com>,
	Paul Gortmaker <paul.gortmaker@...driver.com>,
	Wei Yongjun <yongjun_wei@...ndmicro.com.cn>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH -next] memory: atmel-ebi: use PTR_ERR_OR_ZERO() to
 simplify the code

Hi,

On 06/07/2016 at 12:08:05 +0000, weiyj_lk@....com wrote :
> From: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>
> 
> Use PTR_ERR_OR_ZERO rather than if(IS_ERR(...)) + PTR_ERR.
> 

I'm guessing you found that using coccinnelle or any other static
analysis tool. Can you mention that in the commit message?

> Signed-off-by: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>
> ---
>  drivers/memory/atmel-ebi.c | 10 ++--------
>  1 file changed, 2 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/memory/atmel-ebi.c b/drivers/memory/atmel-ebi.c
> index f87ad6f..b5ed3bd 100644
> --- a/drivers/memory/atmel-ebi.c
> +++ b/drivers/memory/atmel-ebi.c
> @@ -410,10 +410,7 @@ static int at91sam9_ebi_init(struct at91_ebi *ebi)
>  
>  	field.reg = AT91SAM9_SMC_MODE(AT91SAM9_SMC_GENERIC);
>  	fields->mode = devm_regmap_field_alloc(ebi->dev, ebi->smc, field);
> -	if (IS_ERR(fields->mode))
> -		return PTR_ERR(fields->mode);
> -
> -	return 0;
> +	return PTR_ERR_OR_ZERO(fields->mode);
>  }
>  
>  static int sama5d3_ebi_init(struct at91_ebi *ebi)
> @@ -441,10 +438,7 @@ static int sama5d3_ebi_init(struct at91_ebi *ebi)
>  
>  	field.reg = SAMA5_SMC_MODE(SAMA5_SMC_GENERIC);
>  	fields->mode = devm_regmap_field_alloc(ebi->dev, ebi->smc, field);
> -	if (IS_ERR(fields->mode))
> -		return PTR_ERR(fields->mode);
> -
> -	return 0;
> +	return PTR_ERR_OR_ZERO(fields->mode);
>  }
>  
>  static int at91_ebi_dev_setup(struct at91_ebi *ebi, struct device_node *np,
> 
> 

-- 
Alexandre Belloni, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com