[PATCH 3/3] FIXUP: FROMLIST: ASoC: amd: Report accurate hw_ptr during dma

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On Wed, Nov 8, 2017 at 12:42 PM, Alex Deucher <alexdeucher at gmail.com> wrote:
> On Wed, Nov 8, 2017 at 12:29 PM, Guenter Roeck <groeck at google.com> wrote:
>> On Wed, Nov 8, 2017 at 9:24 AM, Alex Deucher <alexdeucher at gmail.com> wrote:
>>>
>>> From: Guenter Roeck <groeck at chromium.org>
>>>
>>> ERROR: "__aeabi_uldivmod" [sound/soc/amd/snd-soc-acp-pcm.ko] undefined!
>>>
>>> 64-bit divides require special operations to avoid build errors on 32-bit
>>> systems.
>>>
>>> BUG=b:63121716
>>> TEST="Build i386:allmodconfig"
>>>
>>
>> Is this an upstream submission ? Fine with me, but it should not include any
>> chromium specific tags, neither in the subject not in the description.
>
> I'm not familiar with which are chromium specific (TEST, BUG, FIXUP,
> FROMLIST I guess?). The info seems useful to have in the bug, but I
> can respin if it's a big deal.

s/bug/commit message/

Alex

>
> Alex
>
>>
>> Guenter
>>
>>>
>>> Signed-off-by: Guenter Roeck <groeck at chromium.org>
>>> Reviewed-on: https://chromium-review.googlesource.com/678919
>>> Reviewed-by: Jason Clinton <jclinton at chromium.org>
>>> (cherry picked from commit 7ca726e80f21abdbaed9a5a70def1c33a26f8533)
>>> Reviewed-on: https://chromium-review.googlesource.com/681618
>>> Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
>>> ---
>>>  sound/soc/amd/acp-pcm-dma.c | 3 +--
>>>  1 file changed, 1 insertion(+), 2 deletions(-)
>>>
>>> diff --git a/sound/soc/amd/acp-pcm-dma.c b/sound/soc/amd/acp-pcm-dma.c
>>> index 13d040a4d26f..ef7e98ad960c 100644
>>> --- a/sound/soc/amd/acp-pcm-dma.c
>>> +++ b/sound/soc/amd/acp-pcm-dma.c
>>> @@ -856,12 +856,11 @@ static snd_pcm_uframes_t acp_dma_pointer(struct
>>> snd_pcm_substream *substream)
>>>         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
>>>                 if (bytescount > rtd->renderbytescount)
>>>                         bytescount = bytescount - rtd->renderbytescount;
>>> -               pos =  bytescount % buffersize;
>>>         } else {
>>>                 if (bytescount > rtd->capturebytescount)
>>>                         bytescount = bytescount - rtd->capturebytescount;
>>> -               pos = bytescount % buffersize;
>>>         }
>>> +       pos = do_div(bytescount, buffersize);
>>>         return bytes_to_frames(runtime, pos);
>>>  }
>>>
>>> --
>>> 2.13.6
>>>
>>


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