linux-kernel - Re: [RFC][PATCH 21/26] alsa: ASoC: Add JZ4740 ASoC support

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Date:	Thu, 03 Jun 2010 19:16:42 +0200
From:	Lars-Peter Clausen <lars@...afoo.de>
To:	Liam Girdwood <lrg@...mlogic.co.uk>
CC:	Ralf Baechle <ralf@...ux-mips.org>, linux-mips@...ux-mips.org,
	linux-kernel@...r.kernel.org,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	alsa-devel@...a-project.org
Subject: Re: [RFC][PATCH 21/26] alsa: ASoC: Add JZ4740 ASoC support

Liam Girdwood wrote:
> On Thu, 2010-06-03 at 18:50 +0200, Lars-Peter Clausen wrote:
>   
>>>> +    config = snd_soc_dai_get_dma_data(rtd->dai->cpu_dai,
>>>>         
>> substream);
>>     
>>>> +    if (!prtd->dma) {
>>>> +            const char *dma_channel_name;
>>>> +            if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
>>>> +                    dma_channel_name = "PCM Playback";
>>>> +            else
>>>> +                    dma_channel_name = "PCM Capture";
>>>> +
>>>> +            prtd->dma = jz4740_dma_request(substream,
>>>>         
>> dma_channel_name);
>>     
>>>>     
>>>>         
>>> dma_channel_name variable is not required here. Just use the const
>>>       
>> char
>>     
>>> * directly.
>>>
>>>   
>>>       
>> I actually had it like that before, but I think it is much more readable
>> in its current form.
>>     
>
> I disagree, having the char pointer here just adds an extra level of
> indirection and costs an extra two lines of code. 
>
> Liam 
>   
Hi

Could you give an concrete example of how you would code it?

- Lars
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