linux-kernel - Re: [PATCH v2] dma-mapping: Provide write-combine allocations

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Date:	Thu, 21 Aug 2014 12:38:48 +0200
From:	Marek Szyprowski <m.szyprowski@...sung.com>
To:	Russell King - ARM Linux <linux@....linux.org.uk>,
	Thierry Reding <thierry.reding@...il.com>
Cc:	Arnd Bergmann <arnd@...db.de>, linaro-mm-sig@...ts.linaro.org,
	linux-arm-kernel@...ts.infradead.org, linux-arch@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] dma-mapping: Provide write-combine allocations

Hello,

On 2014-08-01 17:19, Russell King - ARM Linux wrote:
> On Fri, Aug 01, 2014 at 02:40:59PM +0200, Thierry Reding wrote:
>> On Fri, Jun 27, 2014 at 11:56:58AM +0200, Thierry Reding wrote:
>>> From: Thierry Reding <treding@...dia.com>
>>>
>>> Provide an implementation for dma_{alloc,free,mmap}_writecombine() when
>>> the architecture supports DMA attributes.
>>>
>>> Signed-off-by: Thierry Reding <treding@...dia.com>
>>> ---
>>> Changes in v2:
>>> - Add a generic dma_mmap_writecombine() function
>>>
>>>   arch/arm/include/asm/dma-mapping.h       | 16 ----------------
>>>   include/asm-generic/dma-mapping-common.h |  8 --------
>>>   include/linux/dma-mapping.h              | 26 ++++++++++++++++++++++++++
>>>   3 files changed, 26 insertions(+), 24 deletions(-)
>> Ping?
> I have no problem with this, but I don't think I can say yes to it; that
> depends whether other people are happy for this to live in
> include/linux/dma-mapping.h.
>
> I guess consent for this change can only come by no one objecting to it
> after several postings.

I will take this patch my dma-mapping-next tree and later send pull request
to Linus, so it will be handled in a similar way as all other changes to
generic dma-mapping subsystem done in last 2 years.

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

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