Re: [PATCH 1/6] dmaengine: introduce is_slave_xfer function

[Andy Shevchenko]

On Fri, Nov 16, 2012 at 4:03 PM, Viresh Kumar <viresh.kumar@xxxxxxxxxx> wrote:
> On 16 November 2012 19:29, Andy Shevchenko
> <andriy.shevchenko@xxxxxxxxxxxxxxx> wrote:
>> This function helps to distinguish the slave type of transfer by checking the
>> direction parameter.
>>
>> Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
>> Cc: Nicolas Ferre <nicolas.ferre@xxxxxxxxx>
>> Cc: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx>
>> Cc: Guennadi Liakhovetski <g.liakhovetski@xxxxxx>
>> Cc: Linus Walleij <linus.walleij@xxxxxxxxxx>
>> ---
>>  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);
>> +}
>
> Reviewed-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
>
> Though i still have vote to include DMA_DEV_TO_DEV in thist list :)

I propose to do this later when we have a real user of it. Otherwise
it requires to do additional (sometimes useless) checks.


-- 
With Best Regards,
Andy Shevchenko
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