snd_hda_lock_devices
int snd_hda_lock_devices(struct hda_bus *bus);
EXPORT_SYMBOL_GPL(snd_hda_lock_devices);
if (snd_hda_lock_devices(bus) < 0)
if (snd_hda_lock_devices(&chip->bus))
if (snd_hda_lock_devices(&chip->bus))