[PATCH] drivers/isdn/i4l/: possible cleanups

This patch contains the following possible cleanups:
- make needlessly global code static
- remove the following unused global function:
- isdn_audio.c: isdn_audio_2adpcm_flush
- remove the following unused struct:
- isdn_net.c: isdn_concap_demand_dial_dops

Signed-off-by: Adrian Bunk <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

drivers/isdn/i4l/isdn_audio.c

···
 }
 
 int
-isdn_audio_2adpcm_flush(adpcm_state * s, unsigned char *out)
-{
-	int olen = 0;
-
-	if (s->nleft)
-		isdn_audio_put_bits(0, 8 - s->nleft, s, &out, &olen);
-	return olen;
-}
-
-int
 isdn_audio_xlaw2adpcm(adpcm_state * s, int fmt, unsigned char *in,
 		      unsigned char *out, int len)
 {

drivers/isdn/i4l/isdn_audio.h

···
 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 *);

drivers/isdn/i4l/isdn_common.c

···
 static int isdn_writebuf_stub(int, int, const u_char __user *, int);
 static void set_global_features(void);
 static int isdn_wildmat(char *s, char *p);
-
+static int isdn_add_channels(isdn_driver_t *d, int drvidx, int n, int adding);
 
 static inline void
 isdn_lock_driver(isdn_driver_t *drv)
···
  */
 #include <linux/isdn/capicmd.h>
 
-int
+static int
 isdn_capi_rec_hl_msg(capi_msg *cm) {
 	
 	int di;
···
 	return ret;
 }
 
-int
+static int
 isdn_add_channels(isdn_driver_t *d, int drvidx, int n, int adding)
 {
 	int j, k, m;

drivers/isdn/i4l/isdn_common.h

···
 extern int  isdn_writebuf_skb_stub(int, int, int, struct sk_buff *);
 extern int  register_isdn(isdn_if * i);
 extern int  isdn_msncmp( const char *,  const char *);
-extern int  isdn_add_channels(isdn_driver_t *, int, int, int);
 #if defined(ISDN_DEBUG_NET_DUMP) || defined(ISDN_DEBUG_MODEM_DUMP)
 extern void isdn_dumppkt(char *, u_char *, int, int);
 #endif

drivers/isdn/i4l/isdn_concap.c

···
    */
 
 
-int isdn_concap_dl_data_req(struct concap_proto *concap, struct sk_buff *skb)
+static int isdn_concap_dl_data_req(struct concap_proto *concap, struct sk_buff *skb)
 {
 	struct net_device *ndev = concap -> net_dev;
 	isdn_net_dev *nd = ((isdn_net_local *) ndev->priv)->netdev;
···
 }
 
 
-int isdn_concap_dl_connect_req(struct concap_proto *concap)
+static int isdn_concap_dl_connect_req(struct concap_proto *concap)
 {
 	struct net_device *ndev = concap -> net_dev;
 	isdn_net_local *lp = (isdn_net_local *) ndev->priv;
···
 	return ret;
 }
 
-int isdn_concap_dl_disconn_req(struct concap_proto *concap)
+static int isdn_concap_dl_disconn_req(struct concap_proto *concap)
 {
 	IX25DEBUG( "isdn_concap_dl_disconn_req: %s \n", concap -> net_dev -> name);
 
···
 	&isdn_concap_dl_data_req,
 	&isdn_concap_dl_connect_req,
 	&isdn_concap_dl_disconn_req
-};
-
-struct concap_device_ops isdn_concap_demand_dial_dops = {
-	NULL, /* set this first entry to something like &isdn_net_start_xmit,
-		 but the entry part of the current isdn_net_start_xmit must be
-		 separated first. */
-	/* no connection control for demand dial semantics */
-	NULL,
-	NULL,
 };
 
 /* The following should better go into a dedicated source file such that

drivers/isdn/i4l/isdn_concap.h

···
  */
 
 extern struct concap_device_ops isdn_concap_reliable_dl_dops;
-extern struct concap_device_ops isdn_concap_demand_dial_dops;
 extern struct concap_proto * isdn_concap_new( int );
 
 

drivers/isdn/i4l/isdn_net.c

···
 
 /* Prototypes */
 
-int isdn_net_force_dial_lp(isdn_net_local *);
+static int isdn_net_force_dial_lp(isdn_net_local *);
 static int isdn_net_start_xmit(struct sk_buff *, struct net_device *);
 
 static void isdn_net_ciscohdlck_connected(isdn_net_local *lp);
···
  * Since this function is called every second, simply reset the
  * byte-counter of the interface after copying it to the cps-variable.
  */
-unsigned long last_jiffies = -HZ;
+static unsigned long last_jiffies = -HZ;
 
 void
 isdn_net_autohup(void)
···
 }
 
 
-void isdn_net_tx_timeout(struct net_device * ndev)
+static void isdn_net_tx_timeout(struct net_device * ndev)
 {
 	isdn_net_local *lp = (isdn_net_local *) ndev->priv;
 
···
 }
 
 /* cisco hdlck device private ioctls */
-int
+static int
 isdn_ciscohdlck_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
 {
 	isdn_net_local *lp = (isdn_net_local *) dev->priv;
···
  * This is called from the userlevel-routine below or
  * from isdn_net_start_xmit().
  */
-int
+static int
 isdn_net_force_dial_lp(isdn_net_local * lp)
 {
 	if ((!(lp->flags & ISDN_NET_CONNECTED)) && !lp->dialstate) {

drivers/isdn/i4l/isdn_tty.c

···
 	return 1;
 }
 
-void
+static void
 isdn_tty_cleanup_xmit(modem_info * info)
 {
 	skb_queue_purge(&info->xmit_queue);
···
 /*
  * return the usage calculated by si and layer 2 protocol
  */
-int
+static int
 isdn_calc_usage(int si, int l2)
 {
 	int usg = ISDN_USAGE_MODEM;

drivers/isdn/i4l/isdn_tty.h

···
 extern void isdn_tty_exit(void);
 extern void isdn_tty_readmodem(void);
 extern int  isdn_tty_find_icall(int, int, setup_parm *);
-extern void isdn_tty_cleanup_xmit(modem_info *);
 extern int  isdn_tty_stat_callback(int, isdn_ctrl *);
 extern int  isdn_tty_rcv_skb(int, int, int, struct sk_buff *);
 extern int  isdn_tty_capi_facility(capi_msg *cm); 

drivers/isdn/i4l/isdn_ttyfax.c

···
 	}
 }
 
-int
+static int
 isdn_tty_fax_command1(modem_info * info, isdn_ctrl * c)
 {
 	static char *msg[] =
···
  * Parse AT+F.. FAX class 1 commands
  */
 
-int
+static int
 isdn_tty_cmd_FCLASS1(char **p, modem_info * info)
 {
 	static char *cmd[] =
···
  * Parse AT+F.. FAX class 2 commands
  */
 
-int
+static int
 isdn_tty_cmd_FCLASS2(char **p, modem_info * info)
 {
 	atemu *m = &info->emu;

drivers/isdn/i4l/isdn_x25iface.c

···
 
 
 /* is now in header file (extern): struct concap_proto * isdn_x25iface_proto_new(void); */
-void isdn_x25iface_proto_del( struct concap_proto * );
-int isdn_x25iface_proto_close( struct concap_proto * );
-int isdn_x25iface_proto_restart( struct concap_proto *,
-				 struct net_device *,
-				 struct concap_device_ops *);
-int isdn_x25iface_xmit( struct concap_proto *, struct sk_buff * );
-int isdn_x25iface_receive( struct concap_proto *, struct sk_buff * );
-int isdn_x25iface_connect_ind( struct concap_proto * );
-int isdn_x25iface_disconn_ind( struct concap_proto * );
+static void isdn_x25iface_proto_del( struct concap_proto * );
+static int isdn_x25iface_proto_close( struct concap_proto * );
+static int isdn_x25iface_proto_restart( struct concap_proto *,
+					struct net_device *,
+					struct concap_device_ops *);
+static int isdn_x25iface_xmit( struct concap_proto *, struct sk_buff * );
+static int isdn_x25iface_receive( struct concap_proto *, struct sk_buff * );
+static int isdn_x25iface_connect_ind( struct concap_proto * );
+static int isdn_x25iface_disconn_ind( struct concap_proto * );
 
 
 static struct concap_proto_ops ix25_pops = {
···
 
 /* close the x25iface encapsulation protocol 
  */
-int isdn_x25iface_proto_close(struct concap_proto *cprot){
+static int isdn_x25iface_proto_close(struct concap_proto *cprot){
 
 	ix25_pdata_t *tmp;
         int ret = 0;
···
 
 /* Delete the x25iface encapsulation protocol instance
  */
-void isdn_x25iface_proto_del(struct concap_proto *cprot){
+static void isdn_x25iface_proto_del(struct concap_proto *cprot){
 
 	ix25_pdata_t * tmp;
  
···
 
 /* (re-)initialize the data structures for x25iface encapsulation
  */
-int isdn_x25iface_proto_restart(struct concap_proto *cprot,
-				struct net_device *ndev, 
-				struct concap_device_ops *dops)
+static int isdn_x25iface_proto_restart(struct concap_proto *cprot,
+					struct net_device *ndev,
+					struct concap_device_ops *dops)
 {
 	ix25_pdata_t * pda = cprot -> proto_data ;
 	ulong flags;
···
 
 /* deliver a dl_data frame received from i4l HL driver to the network layer 
  */
-int isdn_x25iface_receive(struct concap_proto *cprot, struct sk_buff *skb)
+static int isdn_x25iface_receive(struct concap_proto *cprot, struct sk_buff *skb)
 {
   	IX25DEBUG( "isdn_x25iface_receive %s \n", MY_DEVNAME(cprot->net_dev) );
 	if ( ( (ix25_pdata_t*) (cprot->proto_data) ) 
···
 
 /* a connection set up is indicated by lower layer 
  */
-int isdn_x25iface_connect_ind(struct concap_proto *cprot)
+static int isdn_x25iface_connect_ind(struct concap_proto *cprot)
 {
 	struct sk_buff * skb = dev_alloc_skb(1);
 	enum wan_states *state_p 
···
 	
 /* a disconnect is indicated by lower layer 
  */
-int isdn_x25iface_disconn_ind(struct concap_proto *cprot)
+static int isdn_x25iface_disconn_ind(struct concap_proto *cprot)
 {
 	struct sk_buff *skb;
 	enum wan_states *state_p 
···
 /* process a frame handed over to us from linux network layer. First byte
    semantics as defined in Documentation/networking/x25-iface.txt
    */
-int isdn_x25iface_xmit(struct concap_proto *cprot, struct sk_buff *skb)
+static int isdn_x25iface_xmit(struct concap_proto *cprot, struct sk_buff *skb)
 {
 	unsigned char firstbyte = skb->data[0];
 	enum wan_states *state = &((ix25_pdata_t*)cprot->proto_data)->state;