linux-kernel - Re: [RESEND][PATCH] drivers: of: of_reserved_mem: fixup the CMA alignment not to affect dma-coherent

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Message-id: <0a1e9e76-9506-a0c3-e3c5-521c7a89bfbc@samsung.com>
Date:	Fri, 27 May 2016 09:56:50 +0200
From:	Marek Szyprowski <m.szyprowski@...sung.com>
To:	Rob Herring <robh+dt@...nel.org>,
	Jaewon Kim <jaewon31.kim@...sung.com>
Cc:	r64343@...escale.com, Grant Likely <grant.likely@...aro.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>, jaewon31.kim@...il.com
Subject: Re: [RESEND][PATCH] drivers: of: of_reserved_mem: fixup the CMA
 alignment not to affect dma-coherent

Hello,


On 2016-05-25 16:38, Rob Herring wrote:
> On Tue, May 24, 2016 at 11:29 PM, Jaewon Kim <jaewon31.kim@...sung.com> wrote:
>> From: Jaewon <jaewon31.kim@...sung.com>
>>
>> There was an alignment mismatch issue for CMA and it was fixed by
>> commit 1cc8e3458b51 ("drivers: of: of_reserved_mem: fixup the alignment with CMA setup").
>> However the way of the commit considers not only dma-contiguous(CMA) but also
>> dma-coherent which has no that requirement.
>>
>> This patch checks more to distinguish dma-contiguous(CMA) from dma-coherent.
>>
>> Signed-off-by: Jaewon Kim <jaewon31.kim@...sung.com>
> I suppose this needs to go to stable? If so, adding the stable tag and
> kernel version would be nice so I don't have to.
>
>> ---
>>   drivers/of/of_reserved_mem.c | 5 ++++-
>>   1 file changed, 4 insertions(+), 1 deletion(-)
> I'm looking for an ack from Marek on this.

Acked-by: Marek Szyprowski <m.szyprowski@...sung.com>

Best regards
-- 
Marek Szyprowski, PhD
Samsung R&D Institute Poland