From mboxrd@z Thu Jan  1 00:00:00 1970
From: Lars-Peter Clausen <lars@metafoo.de>
Subject: Re: [PATCH] ASoC: rx51: Correct DAPM route for capture
Date: Mon, 02 Feb 2015 18:13:01 +0100
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To: Jarkko Nikula <jarkko.nikula@bitmer.com>, Peter Ujfalusi <peter.ujfalusi@ti.com>, Mark Brown <broonie@kernel.org>
Cc: alsa-devel@alsa-project.org, Liam Girdwood <lgirdwood@gmail.com>, pavel@ucw.cz
List-Id: alsa-devel@alsa-project.org

On 01/30/2015 07:32 PM, Jarkko Nikula wrote:
[...]
> Here's additional data. Without this patch there are these errors below
> when registering the card:
>
> [    8.804626] rx51-audio n900-audio: Connecting non-supply widget to
> supply widget is not supported (DMic -> Mic Bias)
> [    8.815795] rx51-audio n900-audio: ASoC: no dapm match for DMic -->
> (null) --> Mic Bias
> [    8.824249] rx51-audio n900-audio: ASoC: Failed to add route DMic ->
> direct -> Mic Bias
> [    8.832763] rx51-audio n900-audio: Connecting non-supply widget to
> supply widget is not supported (HS Mic -> b Mic Bias)
> [    8.844238] rx51-audio n900-audio: ASoC: no dapm match for HS Mic -->
> (null) --> b Mic Bias
> [    8.853057] rx51-audio n900-audio: ASoC: Failed to add route HS Mic
> -> direct -> b Mic Bias
>
> This don't happen on v3.18 so in that sense Peter's patch is kind of
> half-regression fix for v3.19.

What's new in v3.19 is that the kernel will shout if it encounters such a 
invalid route, previously it was just silently ignored. But either way it 
never actually worked, so it's not really a v3.19 regression.

- Lars