Re: [PATCH V4 1/3] dma-mapping: Provide a default plat_device_is_coherent()

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Subject: Re: [PATCH V4 1/3] dma-mapping: Provide a default plat_device_is_coherent()
From: Christoph Hellwig <hch@xxxxxx>
Date: Fri, 15 Sep 2017 17:17:22 +0200
Cc: Christoph Hellwig <hch@xxxxxx>, Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>, Robin Murphy <robin.murphy@xxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Fuxin Zhang <zhangfx@xxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, stable@xxxxxxxxxxxxxxx
In-reply-to: <1505444302-17036-1-git-send-email-chenhc@lemote.com>
User-agent: Mutt/1.5.17 (2007-11-01)

NAK.

For one plat_* is not a valid name for dma-mapping operations.

Second this needs a detailed explanation of the semantics and why
they matter.

References:
- [PATCH V4 1/3] dma-mapping: Provide a default plat_device_is_coherent()
  - From: Huacai Chen

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