snd_echo_pm      2244 sound/pci/echoaudio/echoaudio.c static SIMPLE_DEV_PM_OPS(snd_echo_pm, snd_echo_suspend, snd_echo_resume);
snd_echo_pm      2245 sound/pci/echoaudio/echoaudio.c #define SND_ECHO_PM_OPS	&snd_echo_pm