Re: [PATCH 28/44] sparc: remove arch specific dma_supported implementations
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- To: hch@xxxxxx
- Subject: Re: [PATCH 28/44] sparc: remove arch specific dma_supported implementations
- From: David Miller <davem@xxxxxxxxxxxxx>
- Date: Thu, 08 Jun 2017 10:24:05 -0400 (EDT)
- Cc: x86@xxxxxxxxxx, linux-arm-kernel@xxxxxxxxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxxx, linux-c6x-dev@xxxxxxxxxxxxx, linux-hexagon@xxxxxxxxxxxxxxx, linux-ia64@xxxxxxxxxxxxxxx, linux-mips@xxxxxxxxxxxxxx, openrisc@xxxxxxxxxxxxxxxxxxxx, linuxppc-dev@xxxxxxxxxxxxxxxx, linux-s390@xxxxxxxxxxxxxxx, linux-sh@xxxxxxxxxxxxxxx, sparclinux@xxxxxxxxxxxxxxx, linux-xtensa@xxxxxxxxxxxxxxxx, dmaengine@xxxxxxxxxxxxxxx, linux-tegra@xxxxxxxxxxxxxxx, dri-devel@xxxxxxxxxxxxxxxxxxxxx, linux-samsung-soc@xxxxxxxxxxxxxxx, iommu@xxxxxxxxxxxxxxxxxxxxxxxxxx, netdev@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx
- In-reply-to: <20170608132609.32662-29-hch@lst.de>
- References: <20170608132609.32662-1-hch@lst.de> <20170608132609.32662-29-hch@lst.de>
From: Christoph Hellwig <hch@xxxxxx>
Date: Thu, 8 Jun 2017 15:25:53 +0200
> Usually dma_supported decisions are done by the dma_map_ops instance.
> Switch sparc to that model by providing a ->dma_supported instance for
> sbus that always returns false, and implementations tailored to the sun4u
> and sun4v cases for sparc64, and leave it unimplemented for PCI on
> sparc32, which means always supported.
>
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Acked-by: David S. Miller <davem@xxxxxxxxxxxxx>
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