linux-kernel - Re: [PATCH 3/7] DMA: Freescale: add fsl_dma_free

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Date:	Fri, 28 Mar 2014 11:44:34 +0800
From:	Hongbo Zhang <hongbo.zhang@...escale.com>
To:	Vinod Koul <vinod.koul@...el.com>
CC:	<dan.j.williams@...el.com>, <dmaengine@...r.kernel.org>,
	<scottwood@...escale.com>, <LeoLi@...escale.com>,
	<linuxppc-dev@...ts.ozlabs.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/7] DMA: Freescale: add fsl_dma_free_descriptor() to
 reduce code duplication


On 03/11/2014 07:06 PM, Vinod Koul wrote:
> On Thu, Jan 16, 2014 at 01:47:22PM +0800, hongbo.zhang@...escale.com wrote:
>> From: Hongbo Zhang <hongbo.zhang@...escale.com>
>>
>> There are several places where descriptors are freed using identical code.
>> This patch puts this code into a function to reduce code duplication.
>>
>> Signed-off-by: Hongbo Zhang <hongbo.zhang@...escale.com>
>> Signed-off-by: Qiang Liu <qiang.liu@...escale.com>
>> ---
>>   drivers/dma/fsldma.c |   38 ++++++++++++++++++++------------------
>>   1 file changed, 20 insertions(+), 18 deletions(-)
>>
>> diff --git a/drivers/dma/fsldma.c b/drivers/dma/fsldma.c
>> index 95236e6..ad73538 100644
>> --- a/drivers/dma/fsldma.c
>> +++ b/drivers/dma/fsldma.c
>> @@ -418,6 +418,21 @@ static dma_cookie_t fsl_dma_tx_submit(struct dma_async_tx_descriptor *tx)
>>   }
>>   
>>   /**
>> + * fsl_dma_free_descriptor - Free descriptor from channel's DMA pool.
>> + * @chan : Freescale DMA channel
>> + * @desc: descriptor to be freed
>> + */
>> +static void fsl_dma_free_descriptor(struct fsldma_chan *chan,
>> +		struct fsl_desc_sw *desc)
>> +{
>> +	list_del(&desc->node);
>> +#ifdef FSL_DMA_LD_DEBUG
>> +	chan_dbg(chan, "LD %p free\n", desc);
>> +#endif
> why not wrap the define stuff in the defination of chan_dbg rather than its
> usage :(
>

OK, I will fix it by another separate patch.
Thanks.



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