Re: [PATCH 28/44] sparc: remove arch specific dma_supported implementations
- From
- Christoph Hellwig <hch@lst.de>
- Date
- 2017-06-16 08:47:07
- Also in
- dri-devel, linux-arm-kernel, linux-iommu, linux-mips, linux-samsung-soc, linux-sh, linux-tegra, linuxppc-dev, lkml, sparclinux
- Reply to
- Julian Calaby, 2017-06-08
On Fri, Jun 09, 2017 at 12:22:48AM +1000, Julian Calaby wrote:
I'm guessing there's a few places that have DMA ops but DMA isn't actually supported. Why not have a common method for this, maybe "dma_not_supported"?
It's not common at all. Except for sbus all dma API user first
call set_dma_mask which ends up in the dma_supported call. sbus
is the weird outlier here.