From mboxrd@z Thu Jan  1 00:00:00 1970
From: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Date: Mon, 06 May 2019 13:49:35 +0000
Subject: Re: [PATCH 2/7] au1100fb: fix DMA API abuse
Message-Id: <7a63eeae-4ec3-c82e-c497-8adc7bcb3cea@samsung.com>
List-Id: <linux-fbdev.vger.kernel.org>
References: <20190430110032.25301-1-hch@lst.de>
	<CGME20190430110118epcas2p24019c7551331cc6390e5b5e07b381dd9@epcas2p2.samsung.com>
	<20190430110032.25301-3-hch@lst.de>
In-Reply-To: <20190430110032.25301-3-hch@lst.de>
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To: Christoph Hellwig <hch@lst.de>
Cc: Michal Simek <monstr@monstr.eu>, James Hogan <jhogan@kernel.org>, linux-mips@vger.kernel.org, Ralf Baechle <ralf@linux-mips.org>, linux-kernel@vger.kernel.org, Paul Burton <paul.burton@mips.com>, iommu@lists.linux-foundation.org, linux-fbdev@vger.kernel.org, Ley Foon Tan <lftan@altera.com>


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@lst.de>

Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>

Best regards,
--
Bartlomiej Zolnierkiewicz
Samsung R&D Institute Poland
Samsung Electronics