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Date: Thu, 30 Aug 2018 10:58:50 -0700 From: Christoph Hellwig <hch@...radead.org> To: Ezequiel Garcia <ezequiel@...labora.com> Cc: linux-media@...r.kernel.org, linux-usb@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, Laurent Pinchart <laurent.pinchart@...asonboard.com>, Tomasz Figa <tfiga@...omium.org>, "Matwey V . Kornilov" <matwey@....msu.ru>, Alan Stern <stern@...land.harvard.edu>, kernel@...labora.com, Keiichi Watanabe <keiichiw@...omium.org> Subject: Re: [RFC 2/3] USB: core: Add non-coherent buffer allocation helpers Please don't introduce new DMA_ATTR_NON_CONSISTENT users, it is a rather horrible interface, and I plan to kill it off rather sooner than later. I plan to post some patches for a better interface that can reuse the normal dma_sync_single_* interfaces for ownership transfers. I can happily include usb in that initial patch set based on your work here if that helps.
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