diff --git a/drivers/staging/comedi/drivers/addi-data/addi_common.c b/drivers/staging/comedi/drivers/addi-data/addi_common.c
index 49fb88614b58..d6a91dbd7f62 100644
--- a/drivers/staging/comedi/drivers/addi-data/addi_common.c
+++ b/drivers/staging/comedi/drivers/addi-data/addi_common.c
@@ -196,8 +196,6 @@ static int addi_auto_attach(struct comedi_device *dev,
 		s->maxdata = devpriv->s_EeParameters.i_AoMaxdata;
 		s->len_chanlist =
 			devpriv->s_EeParameters.i_NbrAoChannel;
-		s->range_table = this_board->pr_AoRangelist;
-		s->insn_config = this_board->ao_config;
 		s->insn_write = this_board->ao_write;
 	} else {
 		s->type = COMEDI_SUBD_UNUSED;
@@ -271,10 +269,6 @@ static int addi_auto_attach(struct comedi_device *dev,
 		s->io_bits = 0;	/* all bits input */
 		s->len_chanlist = this_board->i_NbrTTLChannel;
 		s->range_table = &range_digital;
-		s->insn_config = this_board->ttl_config;
-		s->insn_bits = this_board->ttl_bits;
-		s->insn_read = this_board->ttl_read;
-		s->insn_write = this_board->ttl_write;
 	} else {
 		s->type = COMEDI_SUBD_UNUSED;
 	}
diff --git a/drivers/staging/comedi/drivers/addi-data/addi_common.h b/drivers/staging/comedi/drivers/addi-data/addi_common.h
index 14726567b1e8..b241ef3a7bfd 100644
--- a/drivers/staging/comedi/drivers/addi-data/addi_common.h
+++ b/drivers/staging/comedi/drivers/addi-data/addi_common.h
@@ -49,7 +49,6 @@ struct addi_board {
 	int i_AiMaxdata;	/*  resolution of A/D */
 	int i_AoMaxdata;	/*  resolution of D/A */
 	const struct comedi_lrange *pr_AiRangelist;	/* rangelist for A/D */
-	const struct comedi_lrange *pr_AoRangelist;	/* rangelist for D/A */
 
 	int i_NbrDiChannel;	/*  Number of DI channels */
 	int i_NbrDoChannel;	/*  Number of DO channels */
@@ -59,7 +58,6 @@ struct addi_board {
 
 	int i_Dma;		/*  dma present or not */
 	int i_Timer;		/*    timer subdevice present or not */
-	unsigned char b_AvailableConvertUnit;
 	unsigned int ui_MinAcquisitiontimeNs;	/*  Minimum Acquisition in Nano secs */
 	unsigned int ui_MinDelaytimeNs;	/*  Minimum Delay in Nano secs */
 
@@ -84,12 +82,8 @@ struct addi_board {
 	int (*ai_cancel)(struct comedi_device *, struct comedi_subdevice *);
 
 	/* Analog Output */
-	int (*ao_config)(struct comedi_device *, struct comedi_subdevice *,
-			 struct comedi_insn *, unsigned int *);
 	int (*ao_write)(struct comedi_device *, struct comedi_subdevice *,
 			struct comedi_insn *, unsigned int *);
-	int (*ao_bits)(struct comedi_device *, struct comedi_subdevice *,
-		       struct comedi_insn *, unsigned int *);
 
 	/* Digital Input */
 	int (*di_config)(struct comedi_device *, struct comedi_subdevice *,
@@ -120,16 +114,6 @@ struct addi_board {
 			  struct comedi_insn *, unsigned int *);
 	int (*timer_bits)(struct comedi_device *, struct comedi_subdevice *,
 			  struct comedi_insn *, unsigned int *);
-
-	/* TTL IO */
-	int (*ttl_config)(struct comedi_device *, struct comedi_subdevice *,
-			  struct comedi_insn *, unsigned int *);
-	int (*ttl_bits)(struct comedi_device *, struct comedi_subdevice *,
-			struct comedi_insn *, unsigned int *);
-	int (*ttl_read)(struct comedi_device *, struct comedi_subdevice *,
-			struct comedi_insn *, unsigned int *);
-	int (*ttl_write)(struct comedi_device *, struct comedi_subdevice *,
-			 struct comedi_insn *, unsigned int *);
 };
 
 /* MODULE INFO STRUCTURE */