linux-kernel - Re: [PATCH 0/2] Follow-up on "ARM: Fix dma_alloc

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Message-ID: <CA+M3ks5OqDwdmz6dTR87zX+OH_F+dJgXwfo96EWBg8XbvhmY4g@mail.gmail.com>
Date:   Fri, 30 Jun 2017 13:36:54 +0200
From:   Benjamin Gaignard <benjamin.gaignard@...aro.org>
To:     Vladimir Murzin <vladimir.murzin@....com>
Cc:     linux-arm-kernel@...ts.infradead.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Russell King - ARM Linux <linux@...linux.org.uk>,
        Szemző András <sza@....hu>,
        Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Alexandre Torgue <alexandre.torgue@...com>,
        robin.murphy@....com, kbuild-all@...org,
        Christoph Hellwig <hch@....de>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Steven Miao <realmz6@...il.com>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        Michal Simek <monstr@...str.eu>,
        Yoshinori Sato <ysato@...rs.sourceforge.jp>,
        Rich Felker <dalias@...c.org>, Chris Zankel <chris@...kel.net>,
        Max Filippov <jcmvbkbc@...il.com>
Subject: Re: [PATCH 0/2] Follow-up on "ARM: Fix dma_alloc_coherent() and
 friends for NOMMU"

2017-06-28 11:16 GMT+02:00 Vladimir Murzin <vladimir.murzin@....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@...aro.org>

>
> @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@...il.com>
> Cc: Geert Uytterhoeven <geert@...ux-m68k.org>
> Cc: Michal Simek <monstr@...str.eu>
> Cc: Yoshinori Sato <ysato@...rs.sourceforge.jp>
> Cc: Rich Felker <dalias@...c.org>
> Cc: Chris Zankel <chris@...kel.net>
> Cc: Max Filippov <jcmvbkbc@...il.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
>



-- 
Benjamin Gaignard

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