linux-kernel - Re: [PATCH] ASoC: qdsp6: q6apm: use dai link pcm id as pcm device number

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Date:   Thu, 29 Jun 2023 16:43:57 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Cc:     johan+linaro@...nel.org, perex@...ex.cz, tiwai@...e.com,
        lgirdwood@...il.com, ckeepax@...nsource.cirrus.com,
        kuninori.morimoto.gx@...esas.com, linux-kernel@...r.kernel.org,
        pierre-louis.bossart@...ux.intel.com, alsa-devel@...a-project.org,
        Stable@...r.kernel.org
Subject: Re: [PATCH] ASoC: qdsp6: q6apm: use dai link pcm id as pcm device
 number

On Wed, Jun 28, 2023 at 10:24:04AM +0100, Srinivas Kandagatla wrote:
> For some reason we ended up with a setup without this flag.
> This resulted in inconsistent sound card devices numbers which
>  are also not starting as expected at dai_link->id.
>  (Ex: MultiMedia1 pcm ended up with device number 4 instead of 0)

Why is this a problem?

> With this patch patch now the MultiMedia1 PCM ends up with device number 0
> as expected.
> 
> Fixes: 9b4fe0f1cd79 ("ASoC: qdsp6: audioreach: add q6apm-dai support")
> Cc: <Stable@...r.kernel.org>

Won't this be an ABI change?  That seems like it'd disrupt things in
stable.

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