Re: [PATCH] instmem/gk20a: do not use non-portable dma_to_phys()

From	Alexandre Courbot <gnurou@gmail.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH] instmem/gk20a: do not use non-portable dma_to_phys()
Date	2015-11-11 08:20 +0100
Message-ID	<qtxRf-85a-1@gated-at.bofh.it> (permalink)
References	<qt9vz-JX-9@gated-at.bofh.it> <qtpTH-2Jl-3@gated-at.bofh.it> <qtx4R-7xx-1@gated-at.bofh.it> <qtxxU-7Hf-3@gated-at.bofh.it>
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On Wed, Nov 11, 2015 at 3:52 PM, Guenter Roeck <linux@roeck-us.net> wrote:
> On 11/10/2015 10:27 PM, Alexandre Courbot wrote:
>>
>> On Wed, Nov 11, 2015 at 7:41 AM, Andrew Morton
>> <akpm@linux-foundation.org> wrote:
>>>
>>> On Tue, 10 Nov 2015 14:10:47 +0900 Alexandre Courbot
>>> <acourbot@nvidia.com> wrote:
>>>
>>>> dma_to_phys() is not guaranteed to be available on all platforms and
>>>> should not be used outside of arch/. Replace it with what it is expected
>>>> to do in our case: simply cast the DMA handle to a physical address.
>>>
>>>
>>> mainline i386 allmodconfig is now busted.
>>
>>
>> How? I just managed to build it both with and without this patch (note
>> that this is not to dispute the uglyness of this patch).
>>
>
> Good for you. For me, it is
>
> ERROR: "dma_to_phys" [drivers/gpu/drm/nouveau/nouveau.ko] undefined!
>
> as recorded in
>
> http://server.roeck-us.net:8010/builders/hwmon-i386-master/builds/338/steps/buildcommand/logs/stdio
> http://server.roeck-us.net:8010/builders/hwmon-i386-master/builds/339/steps/buildcommand/logs/stdio

Not sure what I did to avoid this - anyway, the call to this function
is going away.
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[PATCH] instmem/gk20a: do not use non-portable dma_to_phys() Alexandre Courbot <acourbot@nvidia.com> - 2015-11-10 06:20 +0100
  Re: [PATCH] instmem/gk20a: do not use non-portable dma_to_phys() Andrew Morton <akpm@linux-foundation.org> - 2015-11-10 23:50 +0100
    Re: [PATCH] instmem/gk20a: do not use non-portable dma_to_phys() Dave Airlie <airlied@gmail.com> - 2015-11-11 03:30 +0100
    Re: [PATCH] instmem/gk20a: do not use non-portable dma_to_phys() Alexandre Courbot <gnurou@gmail.com> - 2015-11-11 07:30 +0100
      Re: [PATCH] instmem/gk20a: do not use non-portable dma_to_phys() Guenter Roeck <linux@roeck-us.net> - 2015-11-11 08:00 +0100
        Re: [PATCH] instmem/gk20a: do not use non-portable dma_to_phys() Alexandre Courbot <gnurou@gmail.com> - 2015-11-11 08:20 +0100

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