linux-kernel - Re: [RFC v02 02/15] dmaengine: core: Move and merge the code paths using private

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Date:	Tue, 1 Dec 2015 10:41:18 +0200
From:	Peter Ujfalusi <peter.ujfalusi@...com>
To:	Andy Shevchenko <andy.shevchenko@...il.com>
CC:	Vinod Koul <vinod.koul@...el.com>, Arnd Bergmann <arnd@...db.de>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	dmaengine <dmaengine@...r.kernel.org>,
	Linux OMAP Mailing List <linux-omap@...r.kernel.org>,
	linux-arm Mailing List <linux-arm-kernel@...ts.infradead.org>,
	"linux-mmc@...r.kernel.org" <linux-mmc@...r.kernel.org>,
	Sekhar Nori <nsekhar@...com>,
	linux-spi <linux-spi@...r.kernel.org>
Subject: Re: [RFC v02 02/15] dmaengine: core: Move and merge the code paths
 using private_candidate

On 11/30/2015 04:42 PM, Andy Shevchenko wrote:
> On Mon, Nov 30, 2015 at 3:45 PM, Peter Ujfalusi <peter.ujfalusi@...com> wrote:
>> Channel matching with private_candidate() is used in two paths, the error
>> checking is slightly different in them and they are duplicating code also.
>> Move the code under dma_get_channel() to provide consistent execution and
>> going to allow us to reuse this mode of channel lookup later.
>>
>> Signed-off-by: Peter Ujfalusi <peter.ujfalusi@...com>
>> ---
>>  drivers/dma/dmaengine.c | 81 +++++++++++++++++++++++++------------------------
>>  1 file changed, 42 insertions(+), 39 deletions(-)
>>
>> diff --git a/drivers/dma/dmaengine.c b/drivers/dma/dmaengine.c
>> index 52c3eee48e2e..1249165fb4b2 100644
>> --- a/drivers/dma/dmaengine.c
>> +++ b/drivers/dma/dmaengine.c
>> @@ -549,6 +549,42 @@ static struct dma_chan *private_candidate(const dma_cap_mask_t *mask,
>>         return NULL;
>>  }
>>
>> +static struct dma_chan *dma_get_channel(struct dma_device *device,
> 
> Naming scheme inside dmaengine.c looks like a mess.

Yes, I agree.

> 
> Since it's static function that utilizes private_candidate() may I
> propose the name like find_candidate() ?

I had __* version as well, but the find_candidate() sounds better.

Thanks,
Péter
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