linux-kernel - Re: [PATCH V3 3/4] dmaselftest: add memcpy selftest support functions

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Message-ID: <564178A5.6080603@codeaurora.org>
Date:	Mon, 9 Nov 2015 23:55:02 -0500
From:	Sinan Kaya <okaya@...eaurora.org>
To:	Andy Shevchenko <andy.shevchenko@...il.com>
Cc:	dmaengine <dmaengine@...r.kernel.org>, timur@...eaurora.org,
	cov@...eaurora.org, jcm@...hat.com,
	Andy Gross <agross@...eaurora.org>,
	linux-arm-msm@...r.kernel.org,
	linux-arm Mailing List <linux-arm-kernel@...ts.infradead.org>,
	Vinod Koul <vinod.koul@...el.com>,
	Dan Williams <dan.j.williams@...el.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH V3 3/4] dmaselftest: add memcpy selftest support functions



On 11/9/2015 4:26 AM, Andy Shevchenko wrote:
> On Mon, Nov 9, 2015 at 5:07 AM, Sinan Kaya <okaya@...eaurora.org> wrote:
>>
>>
>> On 11/8/2015 3:09 PM, Andy Shevchenko wrote:
>>>
>>> On Sun, Nov 8, 2015 at 6:52 AM, Sinan Kaya <okaya@...eaurora.org> wrote:
>>>>
>>>> This patch adds supporting utility functions
>>>> for selftest. The intention is to share the self
>>>> test code between different drivers.
>>>>
>>>> Supported test cases include:
>>>> 1. dma_map_single
>>>> 2. streaming DMA
>>>> 3. coherent DMA
>>>> 4. scatter-gather DMA
>>>
>>>
>
>>>> +       u32 i, j = 0;
>>>
>>> unsigned int
>>
>> why?
>
> Is i or j is going to be used for HW communication? No? What about
> assignment to a values of type u32? No? Plain counters? Use plain
> types.

OK. I did an internal code review before posting the patch. Nobody 
complained about iterator types. I am trying to find what goes as a good 
practice vs. what is personal style.

>
> It's actually comment about your all patches I saw last week.
>
>>>> +       int err = 0;
>>>> +       int ret;
>>>
>>>
>>> Any reason to have two instead of one of similar meaning?
>>>
>>
>> removed ret
>
> Don't forget to check if it's redundant assignment (check in all your
> patches as well).
>

I'll look.

-- 
Sinan Kaya
Qualcomm Technologies, Inc. on behalf of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a 
Linux Foundation Collaborative Project
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