Subject: Re: [PATCH 0/2] Follow-up on "ARM: Fix dma_alloc_coherent() and
 friends for NOMMU"
To: Benjamin Gaignard <benjamin.gaignard@linaro.org>
References: <1498641418-3554-1-git-send-email-vladimir.murzin@arm.com>
 <CA+M3ks5OqDwdmz6dTR87zX+OH_F+dJgXwfo96EWBg8XbvhmY4g@mail.gmail.com>
Cc: linux-arm-kernel@lists.infradead.org,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Russell King - ARM Linux <linux@armlinux.org.uk>,
        =?UTF-8?Q?Szemz=c5=91_And?= =?UTF-8?Q?r=c3=a1s?= <sza@esh.hu>,
        Arnd Bergmann <arnd@arndb.de>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        Alexandre Torgue <alexandre.torgue@st.com>, robin.murphy@arm.com,
        kbuild-all@01.org, Christoph Hellwig <hch@lst.de>,
        Marek Szyprowski <m.szyprowski@samsung.com>,
        Steven Miao <realmz6@gmail.com>,
        Geert Uytterhoeven <geert@linux-m68k.org>,
        Michal Simek <monstr@monstr.eu>,
        Yoshinori Sato <ysato@users.sourceforge.jp>,
        Rich Felker <dalias@libc.org>, Chris Zankel <chris@zankel.net>,
        Max Filippov <jcmvbkbc@gmail.com>
From: Vladimir Murzin <vladimir.murzin@arm.com>
Message-ID: <ad020e7b-9f4b-3f34-f8b6-cfcde158915c@arm.com>
Date: Fri, 30 Jun 2017 12:59:06 +0100
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On 30/06/17 12:36, Benjamin Gaignard wrote:
> 2017-06-28 11:16 GMT+02:00 Vladimir Murzin <vladimir.murzin@arm.com>:
>> These two patches are folloups on "[PATCH v6 0/7] ARM: Fix
>> dma_alloc_coherent() and friends for NOMMU" which has been partly
>> merged in [1]. PATCH 1/2 is done per Christoph's suggestion [2] to
>> eliminate duplication in dma-noop.c.  PATCH 2/2 is fixup for ARM's dma
>> operations for NOMMU due to aforementioned change.
>>
>> @Benjamin, your Tested-by for ARM bits would be very appretiated!
> 
> I have been able to test on stm32f4 with drm/kms drivers which is
> calling dma_alloc_coherent
> and modetest doing mmap and it is working fine.
> 
> tested-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
> 

Great thanks!

Vladimir

>>
>> @Christoph, in case you decide to queue PATCH 1/2, can you put it
>> before "ARM: NOMMU: Introduce dma operations for noMMU", so transition
>> to the new dma operations won't break bisectability.
>>
>> [1] git://git.infradead.org/users/hch/dma-mapping.git for-next
>> [2] https://www.spinics.net/lists/arm-kernel/msg590587.html
>>
>> Cc: Steven Miao <realmz6@gmail.com>
>> Cc: Geert Uytterhoeven <geert@linux-m68k.org>
>> Cc: Michal Simek <monstr@monstr.eu>
>> Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
>> Cc: Rich Felker <dalias@libc.org>
>> Cc: Chris Zankel <chris@zankel.net>
>> Cc: Max Filippov <jcmvbkbc@gmail.com>
>>
>> Thanks!
>>
>> Vladimir Murzin (2):
>>   drivers: dma-mapping: allow dma_common_mmap() for NOMMU
>>   fixup: ARM: NOMMU: Introduce dma operations for noMMU
>>
>>  arch/arm/mm/dma-mapping-nommu.c | 18 ------------------
>>  arch/blackfin/Kconfig           |  1 +
>>  arch/m32r/Kconfig               |  1 +
>>  arch/m68k/Kconfig               |  1 +
>>  arch/microblaze/Kconfig         |  1 +
>>  arch/sh/Kconfig                 |  1 +
>>  arch/xtensa/Kconfig             |  1 +
>>  drivers/base/dma-mapping.c      |  4 ++--
>>  8 files changed, 8 insertions(+), 20 deletions(-)
>>
>> --
>> 2.0.0
>>
> 
> 
>