linux-kernel - Re: [PATCH -next] dmaengine: ti: k3-udma: Use PTR_ERR_OR

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Message-ID: <ee9877ba-b310-9e6e-12e3-4eb5b09c4e75@huawei.com>
Date:   Thu, 14 May 2020 17:09:16 +0800
From:   Samuel Zou <zou_wei@...wei.com>
To:     Peter Ujfalusi <peter.ujfalusi@...com>, <dan.j.williams@...el.com>,
        <vkoul@...nel.org>
CC:     <dmaengine@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH -next] dmaengine: ti: k3-udma: Use PTR_ERR_OR_ZERO() to
 simplify code

Hi Peter,

I'm sorry for my mistake.
Thanks for your comments and suggestions.

On 2020/5/14 16:33, Peter Ujfalusi wrote:
> Hi Samuel,
> 
> On 06/05/2020 12.25, Samuel Zou wrote:
>> Fixes coccicheck warnings:
>>
>> drivers/dma/ti/k3-udma.c:1294:1-3: WARNING: PTR_ERR_OR_ZERO can be used
>> drivers/dma/ti/k3-udma.c:1311:1-3: WARNING: PTR_ERR_OR_ZERO can be used
>> drivers/dma/ti/k3-udma.c:1376:1-3: WARNING: PTR_ERR_OR_ZERO can be used
> 
> Thanks for the patch, I have missed it as I was not in CC for it.
> scripts/get_maintainer.pl would have tipped for a wider recipient list..
> 
>> Reported-by: Hulk Robot <hulkci@...wei.com>
>> Signed-off-by: Samuel Zou <zou_wei@...wei.com>
>> ---
>>   drivers/dma/ti/k3-udma.c | 12 +++---------
>>   1 file changed, 3 insertions(+), 9 deletions(-)
>>
>> diff --git a/drivers/dma/ti/k3-udma.c b/drivers/dma/ti/k3-udma.c
>> index 0a04174..f5775ca 100644
>> --- a/drivers/dma/ti/k3-udma.c
>> +++ b/drivers/dma/ti/k3-udma.c
>> @@ -1291,10 +1291,8 @@ static int udma_get_tchan(struct udma_chan *uc)
>>   	}
>>   
>>   	uc->tchan = __udma_reserve_tchan(ud, uc->config.channel_tpl, -1);
>> -	if (IS_ERR(uc->tchan))
>> -		return PTR_ERR(uc->tchan);
>>   
>> -	return 0;
>> +	return PTR_ERR_OR_ZERO(uc->tchan);
>>   }
>>   
>>   static int udma_get_rchan(struct udma_chan *uc)
>> @@ -1308,10 +1306,8 @@ static int udma_get_rchan(struct udma_chan *uc)
>>   	}
>>   
>>   	uc->rchan = __udma_reserve_rchan(ud, uc->config.channel_tpl, -1);
>> -	if (IS_ERR(uc->rchan))
>> -		return PTR_ERR(uc->rchan);
>>   
>> -	return 0;
>> +	return PTR_ERR_OR_ZERO(uc->rchan);
>>   }
>>   
>>   static int udma_get_chan_pair(struct udma_chan *uc)
>> @@ -1373,10 +1369,8 @@ static int udma_get_rflow(struct udma_chan *uc, int flow_id)
>>   	}
>>   
>>   	uc->rflow = __udma_get_rflow(ud, flow_id);
>> -	if (IS_ERR(uc->rflow))
>> -		return PTR_ERR(uc->rflow);
>>   
>> -	return 0;
>> +	return PTR_ERR_OR_ZERO(uc->rflow);
>>   }
>>   
>>   static void udma_put_rchan(struct udma_chan *uc)
>>
> 
> - Péter
> 
> Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
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>