Re: [alsa-devel] [PATCH] ASoC: uda134x: Use core for applying symmetry constraitns

[...]

• if (substream == uda134x->slave_substream) {

• if (dai->active) {

Meh, this is obviously broken since dai->active gets incremented when the device is opened, so this condition is always true. The best is probably to check if dai->rate != 0.