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Date:   Sat, 06 May 2023 07:57:46 +0200
Message-ID: <87ttwqgfxh.wl-tiwai@suse.de>
From:   Takashi Iwai <tiwai@suse.de>
To:     Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Cc:     broonie@kernel.org, tiwai@suse.com, perex@perex.cz,
        lgirdwood@gmail.com, ckeepax@opensource.cirrus.com,
        kuninori.morimoto.gx@renesas.com, linux-kernel@vger.kernel.org,
        pierre-louis.bossart@linux.intel.com, alsa-devel@alsa-project.org
Subject: Re: [PATCH 1/3] ALSA: pcm: add snd_pcm_add_chmap_ctls_with_prefix
In-Reply-To: <20230505165514.4666-2-srinivas.kandagatla@linaro.org>
References: <20230505165514.4666-1-srinivas.kandagatla@linaro.org>
        <20230505165514.4666-2-srinivas.kandagatla@linaro.org>
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On Fri, 05 May 2023 18:55:12 +0200,
Srinivas Kandagatla wrote:
> 
> On Qualcomm SoC which has multiple Display Port controllers, using
> snd_pcm_add_chmap_ctls() to add chmap controls from every ASoC hdmi codec
> instance for a give card fails while adding second instance as the control
> with same name "Playback Channel Map" already exists from the first instance.
> 
> Fix this by adding a new api wrapper to pass ASoC component name prefix to
> avoid such duplicate control naming.

It implies that you have conflicting PCM objects with the same PCM
device number from the same card.  How can it be?


Takashi