alsa-project/alsa-lib issue #167 was opened from plbossart:

Adding the following patch generates a crash with alsaucm

```` alsaucm -c sof-soundwire set _verb HiFi set _enadev Headphones alsaucm: conf.c:4355: snd_config_iterator_first: Assertion `config->type == SND_CONFIG_TYPE_COMPOUND' failed. Aborted (core dumped) ````

````diff diff --git a/ucm2/sof-soundwire/HiFi.conf b/ucm2/sof-soundwire/HiFi.conf index e780ea4..fbadb65 100644 --- a/ucm2/sof-soundwire/HiFi.conf +++ b/ucm2/sof-soundwire/HiFi.conf @@ -29,3 +29,12 @@ If.hsdev { }

<sof-soundwire/Hdmi.conf> + +SectionModifier."PlayMusic" { + # this works fine +} + +SectionModifier."PlayRadio" { + # this doesn't + Comment "Play Radio" +}

I am not sure if anyone ever used the SectionModifier, if it's a bug in alsa-lib or alsaucm.

SectionModifiers are part of the current proposal in PipeWire according to the documentation for "stream endpoints". https://docs.pipewire.org/page_objects_design.html

"The available UCM modifiers for each UCM device will be added as streams, plus one "default" stream for accessing the device with no modifiers."

Issue URL : https://github.com/alsa-project/alsa-lib/issues/167 Repository URL: https://github.com/alsa-project/alsa-lib