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Date:      Sat, 28 Nov 2015 13:43:06 -0600
From:      Karl Denninger <karl@denninger.net>
To:        "freebsd-arm@freebsd.org" <freebsd-arm@freebsd.org>
Subject:   Re: Raspberry Pi2 kernel warnings
Message-ID:  <565A03CA.1010608@denninger.net>
In-Reply-To: <CAFHCsPX8w%2BrJihkXX4SHaV52=08F8BT7VWordx9p2kKx8CYsLw@mail.gmail.com>
References:  <56575896.70105@denninger.net> <CAFHCsPW4p9f4aGRffhAgFVgcYTixoJQVR707hhXZmB9B7U9v-A@mail.gmail.com> <5657E4C6.9020609@denninger.net> <56589C6B.8000100@denninger.net> <CAFHCsPUYYs3Kbfi4-tpAz-iah49s-nPyAX-akc71_4s-YMgQbQ@mail.gmail.com> <5658DB87.5010308@denninger.net> <CAFHCsPX8w%2BrJihkXX4SHaV52=08F8BT7VWordx9p2kKx8CYsLw@mail.gmail.com>

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That appears to have fixed it; espeak is again working.

On 11/27/2015 17:20, Svatopluk Kraus wrote:
> Well, I cannot imagine now how my patch could be the cause of that
> except that sdhci is using dma channel #4 now, but it was #2, which is
> said to be used by GPU. And channels used by GPU are not initialized
> now. Try to apply the attached fix just to be sure.
>
> FYI, my video playback freezed up after more than 12 hours of playing
> today, so there could be some problem in communication with GPU, not
> my patch related.
>
>
>
> On Fri, Nov 27, 2015 at 11:39 PM, Karl Denninger <karl@denninger.net> w=
rote:
>> Hmmm... or maybe not.
>>
>> "espeak" (speech synthesizer) hangs in a "S" state with this change in=
=2E
>> Not sure if it's the cause but it was working before.
>>
>>
>> On 11/27/2015 13:56, Svatopluk Kraus wrote:
>>> OK, Thanks.
>>>
>>> On Fri, Nov 27, 2015 at 7:09 PM, Karl Denninger <karl@denninger.net> =
wrote:
>>>> The patch still looks good -- it ran overnight without any warnings =
and
>>>> is still grinning.
>>>>
>>>> On 11/26/2015 23:06, Karl Denninger wrote:
>>>>> On 11/26/2015 15:20, Svatopluk Kraus wrote:
>>>>>> On Thu, Nov 26, 2015 at 8:08 PM, Karl Denninger <karl@denninger.ne=
t> wrote:
>>>>>>> I'm getting these on a fairly consistent basis on a Pi that is ta=
lking
>>>>>>> to a Zwave USB stick and a serial USB interface (two instances th=
at both
>>>>>>> show up as serial devices):
>>>>>>>
>>>>>>> bcm_dma0: unused DMA intr CH=3D3, CS=3D20f10027
>>>>>>> bcm_dma0: unused DMA intr CH=3D3, CS=3D20f10027
>>>>>>> bcm_dma0: unused DMA intr CH=3D3, CS=3D20f10027
>>>>>>> bcm_dma0: unused DMA intr CH=3D3, CS=3D20f10027
>>>>>>> bcm_dma0: unused DMA intr CH=3D3, CS=3D20f10027
>>>>>>> bcm_dma0: unused DMA intr CH=3D3, CS=3D20f10027
>>>>>>> bcm_dma0: unused DMA intr CH=3D3, CS=3D20f10027
>>>>>>> bcm_dma0: unused DMA intr CH=3D3, CS=3D20f10027
>>>>>>> bcm_dma0: unused DMA intr CH=3D3, CS=3D20f10027
>>>>>>> bcm_dma0: unused DMA intr CH=3D3, CS=3D20f10007
>>>>>>> bcm_dma0: unused DMA intr CH=3D3, CS=3D20f10027
>>>>>>> bcm_dma0: unused DMA intr CH=3D3, CS=3D20f10027
>>>>>>> bcm_dma0: unused DMA intr CH=3D3, CS=3D20f10007
>>>>>>> bcm_dma0: unused DMA intr CH=3D3, CS=3D20f10027
>>>>>>> bcm_dma0: unused DMA intr CH=3D3, CS=3D20f10027
>>>>>>> bcm_dma0: unused DMA intr CH=3D3, CS=3D20f10027
>>>>>>> bcm_dma0: unused DMA intr CH=3D3, CS=3D20f10007
>>>>>>>
>>>>>>> They're showing up maybe every half-hour or so.... doesn't appear=
 to be
>>>>>>> doing anything bad, other than displaying the message.....
>>>>>>>
>>>>>> I'm just finished a patch which works well for me. I plan to commi=
t it
>>>>>> after some more testing. The patch is attached if you want to test=
 it
>>>>>> too.
>>>>>>
>>>>>> Svatopluk Kraus
>>>>>>
>>>>> I have the patch loaded on on the Pi that is exhibiting the problem=
 --
>>>>> so far looks good.
>>>>>
>>>> --
>>>> Karl Denninger
>>>> karl@denninger.net <mailto:karl@denninger.net>
>>>> /The Market Ticker/
>>>> /[S/MIME encrypted email preferred]/
>> --
>> Karl Denninger
>> karl@denninger.net <mailto:karl@denninger.net>
>> /The Market Ticker/
>> /[S/MIME encrypted email preferred]/

--=20
Karl Denninger
karl@denninger.net <mailto:karl@denninger.net>
/The Market Ticker/
/[S/MIME encrypted email preferred]/

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