linux-kernel - Re: [PATCH 1/2] rtc:rtc-digicolor: Use PTR_ERR_OR

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Date:   Wed, 15 Aug 2018 15:16:56 +0800
From:   zhong jiang <zhongjiang@...wei.com>
To:     Alexandre Belloni <alexandre.belloni@...tlin.com>
CC:     <a.zummo@...ertech.it>, <baruch@...s.co.il>,
        <linux-rtc@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/2] rtc:rtc-digicolor: Use PTR_ERR_OR_ZERO to replace
 the open code

On 2018/8/15 0:15, Alexandre Belloni wrote:
> Hi,
>
> On 13/08/2018 19:31:24+0800, zhong jiang wrote:
>> PTR_ERR_OR_ZERO has implemented the if(IS_ERR(...)) + PTR_ERR, So
>> just replace them rather than duplicating its implement.
>>
>> Signed-off-by: zhong jiang <zhongjiang@...wei.com>
>> ---
>>  drivers/rtc/rtc-digicolor.c | 4 +---
>>  1 file changed, 1 insertion(+), 3 deletions(-)
>>
>> diff --git a/drivers/rtc/rtc-digicolor.c b/drivers/rtc/rtc-digicolor.c
>> index b253bf1..fd6850c 100644
>> --- a/drivers/rtc/rtc-digicolor.c
>> +++ b/drivers/rtc/rtc-digicolor.c
>> @@ -202,10 +202,8 @@ static int __init dc_rtc_probe(struct platform_device *pdev)
>>  	platform_set_drvdata(pdev, rtc);
>>  	rtc->rtc_dev = devm_rtc_device_register(&pdev->dev, pdev->name,
>>  						&dc_rtc_ops, THIS_MODULE);
>> -	if (IS_ERR(rtc->rtc_dev))
>> -		return PTR_ERR(rtc->rtc_dev);
>>  
>> -	return 0;
>> +	return PTR_ERR_OR_ZERO(rtc->rtc_dev);
> As many other maintainers, I don't find that kind of change useful and
> I'm not taking them unless there are other improvements in the driver.
>
>
Hi,  Alexandre

The issue is detected with the help of  Coccinelle.  It simplify the code with specific
function rather than duplicating its implementation.

The patch clean up the code.   of course,  it is not a bug.  if you do not care about it.
I am ok with that.

Thanks,
zhong jiang