linux-kernel - Re: [PATCH 4/4] rtc: ds1347: Use PTR_ERR_OR

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Date:   Thu, 5 Sep 2019 09:39:43 +0200
From:   Alexandre Belloni <alexandre.belloni@...tlin.com>
To:     zhong jiang <zhongjiang@...wei.com>
Cc:     tony@...mide.com, udeep.dutt@...el.com, ashutosh.dixit@...el.com,
        gregkh@...uxfoundation.org, kishon@...com, jonathanh@...dia.com,
        a.zummo@...ertech.it, linux-kernel@...r.kernel.org,
        linux-rtc@...r.kernel.org, arnd@...db.de, lorenzo.pieralisi@....com
Subject: Re: [PATCH 4/4] rtc: ds1347: Use PTR_ERR_OR_ZERO rather than its
 implementation

On 05/09/2019 14:43:15+0800, zhong jiang wrote:
> PTR_ERR_OR_ZERO contains if(IS_ERR(...)) + PTR_ERR. It is better to
> use it directly. hence just replace it.
> 

Unless you have a more significant contribution to this driver, I'm not
going to apply this patch, especially since it will have to be reverted
as soon as the probe function changes.

> Signed-off-by: zhong jiang <zhongjiang@...wei.com>
> ---
>  drivers/rtc/rtc-ds1347.c | 5 +----
>  1 file changed, 1 insertion(+), 4 deletions(-)
> 
> diff --git a/drivers/rtc/rtc-ds1347.c b/drivers/rtc/rtc-ds1347.c
> index d392a7b..5a64eea 100644
> --- a/drivers/rtc/rtc-ds1347.c
> +++ b/drivers/rtc/rtc-ds1347.c
> @@ -151,10 +151,7 @@ static int ds1347_probe(struct spi_device *spi)
>  	rtc = devm_rtc_device_register(&spi->dev, "ds1347",
>  				&ds1347_rtc_ops, THIS_MODULE);
>  
> -	if (IS_ERR(rtc))
> -		return PTR_ERR(rtc);
> -
> -	return 0;
> +	return PTR_ERR_OR_ZERO(rtc);
>  }
>  
>  static struct spi_driver ds1347_driver = {
> -- 
> 1.7.12.4
> 

-- 
Alexandre Belloni, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com