1 files changed, 0 insertions, 1 deletions

diff --git a/drivers/isdn/i4l/isdn_audio.h b/drivers/isdn/i4l/isdn_audio.h
index 5a977b21dcfa..013c3582e0d1 100644
--- a/drivers/isdn/i4l/isdn_audio.h
+++ b/drivers/isdn/i4l/isdn_audio.h
@@ -35,7 +35,6 @@ extern void isdn_audio_alaw2ulaw(unsigned char *, unsigned long);
 extern adpcm_state *isdn_audio_adpcm_init(adpcm_state *, int);
 extern int isdn_audio_adpcm2xlaw(adpcm_state *, int, unsigned char *, unsigned char *, int);
 extern int isdn_audio_xlaw2adpcm(adpcm_state *, int, unsigned char *, unsigned char *, int);
-extern int isdn_audio_2adpcm_flush(adpcm_state * s, unsigned char *out);
 extern void isdn_audio_calc_dtmf(modem_info *, unsigned char *, int, int);
 extern void isdn_audio_eval_dtmf(modem_info *);
 dtmf_state *isdn_audio_dtmf_init(dtmf_state *);