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Date: Mon, 6 May 2019 15:49:35 +0200 From: Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com> To: Christoph Hellwig <hch@....de> Cc: Ralf Baechle <ralf@...ux-mips.org>, Paul Burton <paul.burton@...s.com>, James Hogan <jhogan@...nel.org>, Ley Foon Tan <lftan@...era.com>, Michal Simek <monstr@...str.eu>, linux-mips@...r.kernel.org, iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org, linux-fbdev@...r.kernel.org Subject: Re: [PATCH 2/7] au1100fb: fix DMA API abuse On 04/30/2019 01:00 PM, Christoph Hellwig wrote: > Virtual addresses return from dma(m)_alloc_coherent are opaque in what > backs then, and drivers must not poke into them. Switch the driver > to use the generic DMA API mmap helper to avoid these games. > > Signed-off-by: Christoph Hellwig <hch@....de> Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com> Best regards, -- Bartlomiej Zolnierkiewicz Samsung R&D Institute Poland Samsung Electronics
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