[PATCH 6/7] riscv: Select ARCH_DMA_DEFAULT_COHERENT

[Jiaxun Yang]

> 2023年2月21日 18:14，Conor Dooley <conor at kernel.org> 写道：
> 
> On Tue, Feb 21, 2023 at 12:46:12PM +0000, Jiaxun Yang wrote:
>> For RISCV we always assume devices are DMA coherent.
> 
> "Always assume", I'm not keen on that wording as it is unclear as to
> whether you are suggesting that a) we always take devices to be DMA
> coherent, or b) unless a device states it is non-coherent, we take it to
> be DMA coherent.
> I think you mean b, but being exact would be appreciated, thanks.

Yep I meant option b, thanks for the point.

> 
>> Select ARCH_DMA_DEFAULT_COHERENT to ensure dev->dma_conherent
>> is always initialized to true.
>> 
>> Signed-off-by: Jiaxun Yang <jiaxun.yang at flygoat.com>
> 
> Why was this not sent to the riscv list?
> When (or if) you send v2, can you please make sure that you do cc it?
Will do.

Thanks
- Jiaxun

> 
> Thanks,
> Conor.