linux-kernel - Re: [PATCH v2 RFC/RFT 1/5] ARM: dma-mapping: Add fallback normal page allocations

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Date:   Wed, 24 Apr 2019 17:08:32 +0200
From:   Christoph Hellwig <hch@....de>
To:     Nicolin Chen <nicoleotsuka@...il.com>
Cc:     hch@....de, robin.murphy@....com, vdumpa@...dia.com,
        linux@...linux.org.uk, catalin.marinas@....com,
        will.deacon@....com, joro@...tes.org, m.szyprowski@...sung.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        iommu@...ts.linux-foundation.org, tony@...mide.com
Subject: Re: [PATCH v2 RFC/RFT 1/5] ARM: dma-mapping: Add fallback normal
 page allocations

On Wed, Apr 24, 2019 at 05:06:38PM +0200, Christoph Hellwig wrote:
>      I'd also use the oppurtunity to forbid a NULL dev argument and
>      opencode those uses.

Actually, looking at your last patch again the NULL argument might
still fit in ok, so maybe we should keep it.