snd_emu10k1_pcm_efx 1804 include/sound/emu10k1.h int snd_emu10k1_pcm_efx(struct snd_emu10k1 *emu, int device);
snd_emu10k1_pcm_efx  123 sound/pci/emu10k1/emu10k1.c 	if ((err = snd_emu10k1_pcm_efx(emu, 2)) < 0)