On Wed, Dec 8, 2021, at 23:26, Takashi Sakamoto wrote: > For your information, `check_event()` in `test/user-ctl-element-set.c`, my > rough implementation of test for event triggered by tlv operation, might > be helpful to you or start point t to discuss about event check. Oops. It's in source code of alsa-lib. * https://github.com/alsa-project/alsa-lib/blob/master/test/user-ctl-element-set.c#L389 Regards Takashi Sakamoto