snd_ff_stream_reserve_duplex  216 sound/firewire/fireface/ff-pcm.c 		err = snd_ff_stream_reserve_duplex(ff, rate);
snd_ff_stream_reserve_duplex  142 sound/firewire/fireface/ff.h int snd_ff_stream_reserve_duplex(struct snd_ff *ff, unsigned int rate);