linux-kernel - Re: [alsa-devel] [PATCH] ASoC: wm8904: fix runtime warning

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Date:	Mon, 12 Jan 2015 11:32:05 +0800
From:	Bo Shen <voice.shen@...el.com>
To:	Charles Keepax <ckeepax@...nsource.wolfsonmicro.com>
CC:	Mark Brown <broonie@...nel.org>, <alsa-devel@...a-project.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-sound@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [alsa-devel] [PATCH] ASoC: wm8904: fix runtime warning

Hi Charles,

On 01/09/2015 07:16 PM, Charles Keepax wrote:
> On Fri, Jan 09, 2015 at 04:53:40PM +0800, Bo Shen wrote:
>> As the commit 5fe5b76 (ASoC: dapm: Do not pretend to support
>> controls for non mixer/mux widgets) remove the fake control.
>>
>> Then, the wm8904 throw out the following warning at runtime.
>> --->8---
>> wm8904 1-001a: Control not supported for path ADCL -> [Left] -> AIFOUTL
>> wm8904 1-001a: ASoC: no dapm match for ADCL --> Left --> AIFOUTL
>> wm8904 1-001a: ASoC: Failed to add route ADCL -> Left -> AIFOUTL
>> wm8904 1-001a: Control not supported for path ADCR -> [Right] -> AIFOUTL
>> wm8904 1-001a: ASoC: no dapm match for ADCR --> Right --> AIFOUTL
>> wm8904 1-001a: ASoC: Failed to add route ADCR -> Right -> AIFOUTL
>> wm8904 1-001a: Control not supported for path ADCL -> [Left] -> AIFOUTR
>> wm8904 1-001a: ASoC: no dapm match for ADCL --> Left --> AIFOUTR
>> wm8904 1-001a: ASoC: Failed to add route ADCL -> Left -> AIFOUTR
>> wm8904 1-001a: Control not supported for path ADCR -> [Right] -> AIFOUTR
>> wm8904 1-001a: ASoC: no dapm match for ADCR --> Right --> AIFOUTR
>> wm8904 1-001a: ASoC: Failed to add route ADCR -> Right -> AIFOUTR
>> wm8904 1-001a: Control not supported for path AIFINR -> [Right] -> DACL
>> wm8904 1-001a: ASoC: no dapm match for AIFINR --> Right --> DACL
>> wm8904 1-001a: ASoC: Failed to add route AIFINR -> Right -> DACL
>> wm8904 1-001a: Control not supported for path AIFINL -> [Left] -> DACL
>> wm8904 1-001a: ASoC: no dapm match for AIFINL --> Left --> DACL
>> wm8904 1-001a: ASoC: Failed to add route AIFINL -> Left -> DACL
>> wm8904 1-001a: Control not supported for path AIFINR -> [Right] -> DACR
>> wm8904 1-001a: ASoC: no dapm match for AIFINR --> Right --> DACR
>> wm8904 1-001a: ASoC: Failed to add route AIFINR -> Right -> DACR
>> wm8904 1-001a: Control not supported for path AIFINL -> [Left] -> DACR
>> wm8904 1-001a: ASoC: no dapm match for AIFINL --> Left --> DACR
>> wm8904 1-001a: ASoC: Failed to add route AIFINL -> Left -> DACR
>> ---8<---
>>
>> This patch is used to remove these warning.
>>
>> Signed-off-by: Bo Shen <voice.shen@...el.com>
>> ---
>>
>>   sound/soc/codecs/wm8904.c | 16 ++++++++--------
>>   1 file changed, 8 insertions(+), 8 deletions(-)
>>
>> diff --git a/sound/soc/codecs/wm8904.c b/sound/soc/codecs/wm8904.c
>> index 4d2d2b1..38582d7 100644
>> --- a/sound/soc/codecs/wm8904.c
>> +++ b/sound/soc/codecs/wm8904.c
>> @@ -1076,10 +1076,10 @@ static const struct snd_soc_dapm_route adc_intercon[] = {
>>   	{ "Right Capture PGA", NULL, "Right Capture Mux" },
>>   	{ "Right Capture PGA", NULL, "Right Capture Inverting Mux" },
>>
>> -	{ "AIFOUTL", "Left",  "ADCL" },
>> -	{ "AIFOUTL", "Right", "ADCR" },
>> -	{ "AIFOUTR", "Left",  "ADCL" },
>> -	{ "AIFOUTR", "Right", "ADCR" },
>> +	{ "AIFOUTL", NULL, "ADCL" },
>> +	{ "AIFOUTL", NULL, "ADCR" },
>> +	{ "AIFOUTR", NULL, "ADCL" },
>> +	{ "AIFOUTR", NULL, "ADCR" },
>
> Is this the right fix here? I am not super familiar with the
> driver but it appears to contain an "AIFOUTL Mux" control which
> is not connected to anything. Looks like maybe this is a mistake
> the mux is indeded to be included in the path? Feels like we
> should either remove the control as well or hook it into the
> path.

Thank for your information.
I think here it should correct the path name as
--->8---
{ "AIFOUTL Mux", "Left",  "ADCL" },
{ "AIFOUTL Mux", "Right", "ADCR" },
{ "AIFOUTR Mux", "Left",  "ADCL" },
{ "AIFOUTR Mux", "Right", "ADCR" },
---8<---

Thanks again. I will send out the new version.

> Thanks,
> Charles
>

Best Regards,
Bo Shen
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