snd_emu10k1_pcm_efx 1808 include/sound/emu10k1.h int snd_emu10k1_pcm_efx(struct snd_emu10k1 * emu, int device, struct snd_pcm ** rpcm);
snd_emu10k1_pcm_efx  134 sound/pci/emu10k1/emu10k1.c 	if ((err = snd_emu10k1_pcm_efx(emu, 2, NULL)) < 0)