On Mon, May 4, 2015 at 6:42 AM, Krzysztof Kozlowski
<k.kozlowski@xxxxxxxxxxx> wrote:
> 2015-05-04 3:15 GMT+09:00 Vasily Khoruzhick <anarsoul@xxxxxxxxx>:
>> Otherwise dma_alloc_coherent() fails.
>
> Could you say few more words about the failure?
> Also the patch looks like a candidate for CC-stable along with Fixes tag.
Hm, any call of dma_alloc_coherent() will fail for s3c24xx-dmac
device. For example, asoc dmaengine driver. What exactly do
you want me to precise?
>>
>> Signed-off-by: Vasily Khoruzhick <anarsoul@xxxxxxxxx>
>> ---
>> arch/arm/mach-s3c24xx/common.c | 2 ++
>> 1 file changed, 2 insertions(+)
>>
>> diff --git a/arch/arm/mach-s3c24xx/common.c b/arch/arm/mach-s3c24xx/common.c
>> index bf50328..7ed0853 100644
>> --- a/arch/arm/mach-s3c24xx/common.c
>> +++ b/arch/arm/mach-s3c24xx/common.c
>> @@ -355,6 +355,7 @@ struct platform_device s3c2410_device_dma = {
>> .resource = s3c2410_dma_resource,
>> .dev = {
>> .platform_data = &s3c2410_dma_platdata,
>> + .coherent_dma_mask = ~0,
>
> DMA_BIT_MASK(32)?
>
>> },
>> };
>> #endif
>> @@ -452,6 +453,7 @@ struct platform_device s3c2440_device_dma = {
>> .resource = s3c2410_dma_resource,
>> .dev = {
>> .platform_data = &s3c2440_dma_platdata,
>> + .coherent_dma_mask = ~0,
>
> Ditto.
>
> Best regards,
> Krzysztof
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