UAC3_PD_STATE_D0 824 sound/usb/pcm.c ret = snd_usb_pcm_change_state(subs, UAC3_PD_STATE_D0); UAC3_PD_STATE_D0 902 sound/usb/pcm.c ret = snd_usb_pcm_change_state(subs, UAC3_PD_STATE_D0); UAC3_PD_STATE_D0 89 sound/usb/power.c if (state == UAC3_PD_STATE_D0) {