linux-kernel - Re: [PATCH 1/6] dmaengine: introduce is_slave

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Message-ID: <CAHp75Vevs1NYkE_Js7m9gAxqO=j9UuJZk-KgOsvEp6Svd3FwmQ@mail.gmail.com>
Date:	Fri, 16 Nov 2012 17:26:07 +0200
From:	Andy Shevchenko <andy.shevchenko@...il.com>
To:	Mika Westerberg <mika.westerberg@...ux.intel.com>
Cc:	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	Vinod Koul <vinod.koul@...el.com>,
	spear-devel <spear-devel@...t.st.com>,
	linux-kernel@...r.kernel.org,
	Viresh Kumar <viresh.kumar@...aro.org>,
	Nicolas Ferre <nicolas.ferre@...el.com>,
	Guennadi Liakhovetski <g.liakhovetski@....de>,
	Linus Walleij <linus.walleij@...aro.org>
Subject: Re: [PATCH 1/6] dmaengine: introduce is_slave_xfer function

On Fri, Nov 16, 2012 at 4:21 PM, Mika Westerberg
<mika.westerberg@...ux.intel.com> wrote:
> On Fri, Nov 16, 2012 at 03:59:14PM +0200, Andy Shevchenko wrote:
>> This function helps to distinguish the slave type of transfer by checking the
>> direction parameter.
>>
>> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
>> Cc: Nicolas Ferre <nicolas.ferre@...el.com>
>> Cc: Mika Westerberg <mika.westerberg@...ux.intel.com>
>> Cc: Guennadi Liakhovetski <g.liakhovetski@....de>
>> Cc: Linus Walleij <linus.walleij@...aro.org>
>> ---
>>  include/linux/dmaengine.h |    5 +++++
>>  1 file changed, 5 insertions(+)
>>
>> diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
>> index 6402b18..3e1a9026 100644
>> --- a/include/linux/dmaengine.h
>> +++ b/include/linux/dmaengine.h
>> @@ -618,6 +618,11 @@ static inline int dmaengine_slave_config(struct dma_chan *chan,
>>                       (unsigned long)config);
>>  }
>>
>> +static inline bool is_slave_xfer(enum dma_transfer_direction direction)
>> +{
>> +     return (direction == DMA_MEM_TO_DEV) || (direction == DMA_DEV_TO_MEM);
>> +}
>
> I wonder if the above function need some prefix like
> dmaengine_is_slave_xfer()?

is_dma_slave_xfer seems more consistent with other helper functions.

But is_slave_xfer is vacant anyway. I like shorter names.

>
> Otherwise looks fine to me.



-- 
With Best Regards,
Andy Shevchenko
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