snd_hdac_power_down_pm  206 include/sound/hdaudio.h static inline int snd_hdac_power_down_pm(struct hdac_device *codec) { return 0; }
snd_hdac_power_down_pm  626 sound/hda/hdac_device.c int snd_hdac_power_down_pm(struct hdac_device *codec)