[alsa-devel] [RFC 1/2] ASoC: imx-ssi: use dma_writecombine consistently

[Liam Girdwood]

On 25/08/11 15:19, Sascha Hauer wrote:
> On Thu, Aug 25, 2011 at 03:54:55PM +0200, Wolfram Sang wrote:
>> If the channel is allocated as writecombine, then mmaping it should also
>> use writecombine. Also, add a proper device for the call. Ported from a
>> similar fix for mach-mxs.
>>
>> Signed-off-by: Wolfram Sang <w.sang at pengutronix.de>
>> Cc: Sascha Hauer <s.hauer at pengutronix.de>
>> Cc: Liam Girdwood <lrg at ti.com>
>> Cc: Mark Brown <broonie at opensource.wolfsonmicro.com>
> 
> both:
> 
> Acked-by: Sascha Hauer <s.hauer at pengutronix.de>
> 

Acked-by: Liam Girdwood <lrg at ti.com>

> 
>> ---
>>  sound/soc/imx/imx-ssi.c |    4 ++--
>>  1 files changed, 2 insertions(+), 2 deletions(-)
>>
>> diff --git a/sound/soc/imx/imx-ssi.c b/sound/soc/imx/imx-ssi.c
>> index 10a8e27..3b8d5cd 100644
>> --- a/sound/soc/imx/imx-ssi.c
>> +++ b/sound/soc/imx/imx-ssi.c
>> @@ -357,8 +357,8 @@ int snd_imx_pcm_mmap(struct snd_pcm_substream *substream,
>>  	struct snd_pcm_runtime *runtime = substream->runtime;
>>  	int ret;
>>  
>> -	ret = dma_mmap_coherent(NULL, vma, runtime->dma_area,
>> -			runtime->dma_addr, runtime->dma_bytes);
>> +	ret = dma_mmap_writecombine(substream->pcm->card->dev, vma,
>> +		runtime->dma_area, runtime->dma_addr, runtime->dma_bytes);
>>  
>>  	pr_debug("%s: ret: %d %p 0x%08x 0x%08x\n", __func__, ret,
>>  			runtime->dma_area,
>> -- 
>> 1.7.5.4
>>
>>
>