14.12.2021 17:29, Takashi Iwai пишет: >> I'm also wondering whether snd_power_change_state() should be moved into >> RPM callbacks and whether this function does anything practically useful >> on Tegra at all. > This call is mostly for ALSA core stuff, and not necessarily > reflecting the exact device power state. The major role is for > controlling / blocking the device accesses at the system > suspend/resume, so it's correct to set only in the system > suspend/resume callbacks, not in runtime PM. > Thank you for the clarification.