Re: [PATCH 2/2] MIPS: remove support for DMA_ATTR_WRITE_COMBINE

[Sergei Shtylyov]

Hello!

On 05.08.2019 11:01, Christoph Hellwig wrote:

> Mips uses the KSEG1 kernel memory segment do map dma coherent

    MIPS. s/do/to/?

> allocations for n

on-coherent devices as uncachable, and does not have

   Uncacheable?

> any kind of special support for DMA_ATTR_WRITE_COMBINE in the allocation
> path.  Thus supporting DMA_ATTR_WRITE_COMBINE in dma_mmap_attrs will
> lead to multiple mappings with different caching attributes.
>
> Fixes: 8c172467be36 ("MIPS: Add implementation of dma_map_ops.mmap()")
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>
[...]

MBR, Sergei