Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 2253 insertions, 0 deletions

diff --git a/drivers/isdn/i4l/isdn_common.c b/drivers/isdn/i4l/isdn_common.c
new file mode 100644
index 00000000000..c406df6f268
--- /dev/null
+++ b/drivers/isdn/i4l/isdn_common.c
@@ -0,0 +1,2253 @@
+/* $Id: isdn_common.c,v 1.1.2.3 2004/02/10 01:07:13 keil Exp $
+ *
+ * Linux ISDN subsystem, common used functions (linklevel).
+ *
+ * Copyright 1994-1999  by Fritz Elfert (fritz@isdn4linux.de)
+ * Copyright 1995,96    Thinking Objects Software GmbH Wuerzburg
+ * Copyright 1995,96    by Michael Hipp (Michael.Hipp@student.uni-tuebingen.de)
+ *
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/version.h>
+#include <linux/poll.h>
+#include <linux/vmalloc.h>
+#include <linux/isdn.h>
+#include <linux/smp_lock.h>
+#include "isdn_common.h"
+#include "isdn_tty.h"
+#include "isdn_net.h"
+#include "isdn_ppp.h"
+#ifdef CONFIG_ISDN_AUDIO
+#include "isdn_audio.h"
+#endif
+#ifdef CONFIG_ISDN_DIVERSION_MODULE
+#define CONFIG_ISDN_DIVERSION
+#endif
+#ifdef CONFIG_ISDN_DIVERSION
+#include <linux/isdn_divertif.h>
+#endif /* CONFIG_ISDN_DIVERSION */
+#include "isdn_v110.h"
+
+/* Debugflags */
+#undef ISDN_DEBUG_STATCALLB
+
+MODULE_DESCRIPTION("ISDN4Linux: link layer");
+MODULE_AUTHOR("Fritz Elfert");
+MODULE_LICENSE("GPL");
+
+isdn_dev *dev;
+
+static char *isdn_revision = "$Revision: 1.1.2.3 $";
+
+extern char *isdn_net_revision;
+extern char *isdn_tty_revision;
+#ifdef CONFIG_ISDN_PPP
+extern char *isdn_ppp_revision;
+#else
+static char *isdn_ppp_revision = ": none $";
+#endif
+#ifdef CONFIG_ISDN_AUDIO
+extern char *isdn_audio_revision;
+#else
+static char *isdn_audio_revision = ": none $";
+#endif
+extern char *isdn_v110_revision;
+
+#ifdef CONFIG_ISDN_DIVERSION
+static isdn_divert_if *divert_if; /* = NULL */
+#endif /* CONFIG_ISDN_DIVERSION */
+
+
+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 inline void
+isdn_lock_driver(isdn_driver_t *drv)
+{
+	try_module_get(drv->interface->owner);
+	drv->locks++;
+}
+
+void
+isdn_lock_drivers(void)
+{
+	int i;
+
+	for (i = 0; i < ISDN_MAX_DRIVERS; i++) {
+		if (!dev->drv[i])
+			continue;
+		isdn_lock_driver(dev->drv[i]);
+	}
+}
+
+static inline void
+isdn_unlock_driver(isdn_driver_t *drv)
+{
+	if (drv->locks > 0) {
+		drv->locks--;
+		module_put(drv->interface->owner);
+	}
+}
+
+void
+isdn_unlock_drivers(void)
+{
+	int i;
+
+	for (i = 0; i < ISDN_MAX_DRIVERS; i++) {
+		if (!dev->drv[i])
+			continue;
+		isdn_unlock_driver(dev->drv[i]);
+	}
+}
+
+#if defined(ISDN_DEBUG_NET_DUMP) || defined(ISDN_DEBUG_MODEM_DUMP)
+void
+isdn_dumppkt(char *s, u_char * p, int len, int dumplen)
+{
+	int dumpc;
+
+	printk(KERN_DEBUG "%s(%d) ", s, len);
+	for (dumpc = 0; (dumpc < dumplen) && (len); len--, dumpc++)
+		printk(" %02x", *p++);
+	printk("\n");
+}
+#endif
+
+/*
+ * I picked the pattern-matching-functions from an old GNU-tar version (1.10)
+ * It was originally written and put to PD by rs@mirror.TMC.COM (Rich Salz)
+ */
+static int
+isdn_star(char *s, char *p)
+{
+	while (isdn_wildmat(s, p)) {
+		if (*++s == '\0')
+			return (2);
+	}
+	return (0);
+}
+
+/*
+ * Shell-type Pattern-matching for incoming caller-Ids
+ * This function gets a string in s and checks, if it matches the pattern
+ * given in p.
+ *
+ * Return:
+ *   0 = match.
+ *   1 = no match.
+ *   2 = no match. Would eventually match, if s would be longer.
+ *
+ * Possible Patterns:
+ *
+ * '?'     matches one character
+ * '*'     matches zero or more characters
+ * [xyz]   matches the set of characters in brackets.
+ * [^xyz]  matches any single character not in the set of characters
+ */
+
+static int
+isdn_wildmat(char *s, char *p)
+{
+	register int last;
+	register int matched;
+	register int reverse;
+	register int nostar = 1;
+
+	if (!(*s) && !(*p))
+		return(1);
+	for (; *p; s++, p++)
+		switch (*p) {
+			case '\\':
+				/*
+				 * Literal match with following character,
+				 * fall through.
+				 */
+				p++;
+			default:
+				if (*s != *p)
+					return (*s == '\0')?2:1;
+				continue;
+			case '?':
+				/* Match anything. */
+				if (*s == '\0')
+					return (2);
+				continue;
+			case '*':
+				nostar = 0;	
+				/* Trailing star matches everything. */
+				return (*++p ? isdn_star(s, p) : 0);
+			case '[':
+				/* [^....] means inverse character class. */
+				if ((reverse = (p[1] == '^')))
+					p++;
+				for (last = 0, matched = 0; *++p && (*p != ']'); last = *p)
+					/* This next line requires a good C compiler. */
+					if (*p == '-' ? *s <= *++p && *s >= last : *s == *p)
+						matched = 1;
+				if (matched == reverse)
+					return (1);
+				continue;
+		}
+	return (*s == '\0')?0:nostar;
+}
+
+int isdn_msncmp( const char * msn1, const char * msn2 )
+{
+	char TmpMsn1[ ISDN_MSNLEN ];
+	char TmpMsn2[ ISDN_MSNLEN ];
+	char *p;
+
+	for ( p = TmpMsn1; *msn1 && *msn1 != ':'; )  // Strip off a SPID
+		*p++ = *msn1++;
+	*p = '\0';
+
+	for ( p = TmpMsn2; *msn2 && *msn2 != ':'; )  // Strip off a SPID
+		*p++ = *msn2++;
+	*p = '\0';
+
+	return isdn_wildmat( TmpMsn1, TmpMsn2 );
+}
+
+int
+isdn_dc2minor(int di, int ch)
+{
+	int i;
+	for (i = 0; i < ISDN_MAX_CHANNELS; i++)
+		if (dev->chanmap[i] == ch && dev->drvmap[i] == di)
+			return i;
+	return -1;
+}
+
+static int isdn_timer_cnt1 = 0;
+static int isdn_timer_cnt2 = 0;
+static int isdn_timer_cnt3 = 0;
+
+static void
+isdn_timer_funct(ulong dummy)
+{
+	int tf = dev->tflags;
+	if (tf & ISDN_TIMER_FAST) {
+		if (tf & ISDN_TIMER_MODEMREAD)
+			isdn_tty_readmodem();
+		if (tf & ISDN_TIMER_MODEMPLUS)
+			isdn_tty_modem_escape();
+		if (tf & ISDN_TIMER_MODEMXMIT)
+			isdn_tty_modem_xmit();
+	}
+	if (tf & ISDN_TIMER_SLOW) {
+		if (++isdn_timer_cnt1 >= ISDN_TIMER_02SEC) {
+			isdn_timer_cnt1 = 0;
+			if (tf & ISDN_TIMER_NETDIAL)
+				isdn_net_dial();
+		}
+		if (++isdn_timer_cnt2 >= ISDN_TIMER_1SEC) {
+			isdn_timer_cnt2 = 0;
+			if (tf & ISDN_TIMER_NETHANGUP)
+				isdn_net_autohup();
+			if (++isdn_timer_cnt3 >= ISDN_TIMER_RINGING) {
+				isdn_timer_cnt3 = 0;
+				if (tf & ISDN_TIMER_MODEMRING)
+					isdn_tty_modem_ring();
+			}
+			if (tf & ISDN_TIMER_CARRIER)
+				isdn_tty_carrier_timeout();
+		}
+	}
+	if (tf) 
+		mod_timer(&dev->timer, jiffies+ISDN_TIMER_RES);
+}
+
+void
+isdn_timer_ctrl(int tf, int onoff)
+{
+	unsigned long flags;
+	int old_tflags;
+
+	spin_lock_irqsave(&dev->timerlock, flags);
+	if ((tf & ISDN_TIMER_SLOW) && (!(dev->tflags & ISDN_TIMER_SLOW))) {
+		/* If the slow-timer wasn't activated until now */
+		isdn_timer_cnt1 = 0;
+		isdn_timer_cnt2 = 0;
+	}
+	old_tflags = dev->tflags;
+	if (onoff)
+		dev->tflags |= tf;
+	else
+		dev->tflags &= ~tf;
+	if (dev->tflags && !old_tflags)
+		mod_timer(&dev->timer, jiffies+ISDN_TIMER_RES);
+	spin_unlock_irqrestore(&dev->timerlock, flags);
+}
+
+/*
+ * Receive a packet from B-Channel. (Called from low-level-module)
+ */
+static void
+isdn_receive_skb_callback(int di, int channel, struct sk_buff *skb)
+{
+	int i;
+
+	if ((i = isdn_dc2minor(di, channel)) == -1) {
+		dev_kfree_skb(skb);
+		return;
+	}
+	/* Update statistics */
+	dev->ibytes[i] += skb->len;
+	
+	/* First, try to deliver data to network-device */
+	if (isdn_net_rcv_skb(i, skb))
+		return;
+
+	/* V.110 handling
+	 * makes sense for async streams only, so it is
+	 * called after possible net-device delivery.
+	 */
+	if (dev->v110[i]) {
+		atomic_inc(&dev->v110use[i]);
+		skb = isdn_v110_decode(dev->v110[i], skb);
+		atomic_dec(&dev->v110use[i]);
+		if (!skb)
+			return;
+	}
+
+	/* No network-device found, deliver to tty or raw-channel */
+	if (skb->len) {
+		if (isdn_tty_rcv_skb(i, di, channel, skb))
+			return;
+		wake_up_interruptible(&dev->drv[di]->rcv_waitq[channel]);
+	} else
+		dev_kfree_skb(skb);
+}
+
+/*
+ * Intercept command from Linklevel to Lowlevel.
+ * If layer 2 protocol is V.110 and this is not supported by current
+ * lowlevel-driver, use driver's transparent mode and handle V.110 in
+ * linklevel instead.
+ */
+int
+isdn_command(isdn_ctrl *cmd)
+{
+	if (cmd->driver == -1) {
+		printk(KERN_WARNING "isdn_command command(%x) driver -1\n", cmd->command);
+		return(1);
+	}
+	if (cmd->command == ISDN_CMD_SETL2) {
+		int idx = isdn_dc2minor(cmd->driver, cmd->arg & 255);
+		unsigned long l2prot = (cmd->arg >> 8) & 255;
+		unsigned long features = (dev->drv[cmd->driver]->interface->features
+						>> ISDN_FEATURE_L2_SHIFT) &
+						ISDN_FEATURE_L2_MASK;
+		unsigned long l2_feature = (1 << l2prot);
+
+		switch (l2prot) {
+			case ISDN_PROTO_L2_V11096:
+			case ISDN_PROTO_L2_V11019:
+			case ISDN_PROTO_L2_V11038:
+			/* If V.110 requested, but not supported by
+			 * HL-driver, set emulator-flag and change
+			 * Layer-2 to transparent
+			 */
+				if (!(features & l2_feature)) {
+					dev->v110emu[idx] = l2prot;
+					cmd->arg = (cmd->arg & 255) |
+						(ISDN_PROTO_L2_TRANS << 8);
+				} else
+					dev->v110emu[idx] = 0;
+		}
+	}
+	return dev->drv[cmd->driver]->interface->command(cmd);
+}
+
+void
+isdn_all_eaz(int di, int ch)
+{
+	isdn_ctrl cmd;
+
+	if (di < 0)
+		return;
+	cmd.driver = di;
+	cmd.arg = ch;
+	cmd.command = ISDN_CMD_SETEAZ;
+	cmd.parm.num[0] = '\0';
+	isdn_command(&cmd);
+}
+
+/*
+ * Begin of a CAPI like LL<->HL interface, currently used only for 
+ * supplementary service (CAPI 2.0 part III)
+ */
+#include <linux/isdn/capicmd.h>
+
+int
+isdn_capi_rec_hl_msg(capi_msg *cm) {
+	
+	int di;
+	int ch;
+	
+	di = (cm->adr.Controller & 0x7f) -1;
+	ch = isdn_dc2minor(di, (cm->adr.Controller>>8)& 0x7f);
+	switch(cm->Command) {
+		case CAPI_FACILITY:
+			/* in the moment only handled in tty */
+			return(isdn_tty_capi_facility(cm));
+		default:
+			return(-1);
+	}
+}
+
+static int
+isdn_status_callback(isdn_ctrl * c)
+{
+	int di;
+	u_long flags;
+	int i;
+	int r;
+	int retval = 0;
+	isdn_ctrl cmd;
+	isdn_net_dev *p;
+
+	di = c->driver;
+	i = isdn_dc2minor(di, c->arg);
+	switch (c->command) {
+		case ISDN_STAT_BSENT:
+			if (i < 0)
+				return -1;
+			if (dev->global_flags & ISDN_GLOBAL_STOPPED)
+				return 0;
+			if (isdn_net_stat_callback(i, c))
+				return 0;
+			if (isdn_v110_stat_callback(i, c))
+				return 0;
+			if (isdn_tty_stat_callback(i, c))
+				return 0;
+			wake_up_interruptible(&dev->drv[di]->snd_waitq[c->arg]);
+			break;
+		case ISDN_STAT_STAVAIL:
+			dev->drv[di]->stavail += c->arg;
+			wake_up_interruptible(&dev->drv[di]->st_waitq);
+			break;
+		case ISDN_STAT_RUN:
+			dev->drv[di]->flags |= DRV_FLAG_RUNNING;
+			for (i = 0; i < ISDN_MAX_CHANNELS; i++)
+				if (dev->drvmap[i] == di)
+					isdn_all_eaz(di, dev->chanmap[i]);
+			set_global_features();
+			break;
+		case ISDN_STAT_STOP:
+			dev->drv[di]->flags &= ~DRV_FLAG_RUNNING;
+			break;
+		case ISDN_STAT_ICALL:
+			if (i < 0)
+				return -1;
+#ifdef ISDN_DEBUG_STATCALLB
+			printk(KERN_DEBUG "ICALL (net): %d %ld %s\n", di, c->arg, c->parm.num);
+#endif
+			if (dev->global_flags & ISDN_GLOBAL_STOPPED) {
+				cmd.driver = di;
+				cmd.arg = c->arg;
+				cmd.command = ISDN_CMD_HANGUP;
+				isdn_command(&cmd);
+				return 0;
+			}
+			/* Try to find a network-interface which will accept incoming call */
+			r = ((c->command == ISDN_STAT_ICALLW) ? 0 : isdn_net_find_icall(di, c->arg, i, &c->parm.setup));
+			switch (r) {
+				case 0:
+					/* No network-device replies.
+					 * Try ttyI's.
+					 * These return 0 on no match, 1 on match and
+					 * 3 on eventually match, if CID is longer.
+					 */
+                                        if (c->command == ISDN_STAT_ICALL)
+					  if ((retval = isdn_tty_find_icall(di, c->arg, &c->parm.setup))) return(retval);
+#ifdef CONFIG_ISDN_DIVERSION 
+                                         if (divert_if)
+                 	                  if ((retval = divert_if->stat_callback(c))) 
+					    return(retval); /* processed */
+#endif /* CONFIG_ISDN_DIVERSION */                       
+					if ((!retval) && (dev->drv[di]->flags & DRV_FLAG_REJBUS)) {
+						/* No tty responding */
+						cmd.driver = di;
+						cmd.arg = c->arg;
+						cmd.command = ISDN_CMD_HANGUP;
+						isdn_command(&cmd);
+						retval = 2;
+					}
+					break;
+				case 1:
+					/* Schedule connection-setup */
+					isdn_net_dial();
+					cmd.driver = di;
+					cmd.arg = c->arg;
+					cmd.command = ISDN_CMD_ACCEPTD;
+					for ( p = dev->netdev; p; p = p->next )
+						if ( p->local->isdn_channel == cmd.arg )
+						{
+							strcpy( cmd.parm.setup.eazmsn, p->local->msn );
+							isdn_command(&cmd);
+							retval = 1;
+							break;
+						}
+					break;
+
+				case 2:	/* For calling back, first reject incoming call ... */
+				case 3:	/* Interface found, but down, reject call actively  */
+					retval = 2;
+					printk(KERN_INFO "isdn: Rejecting Call\n");
+					cmd.driver = di;
+					cmd.arg = c->arg;
+					cmd.command = ISDN_CMD_HANGUP;
+					isdn_command(&cmd);
+					if (r == 3)
+						break;
+					/* Fall through */
+				case 4:
+					/* ... then start callback. */
+					isdn_net_dial();
+					break;
+				case 5:
+					/* Number would eventually match, if longer */
+					retval = 3;
+					break;
+			}
+#ifdef ISDN_DEBUG_STATCALLB
+			printk(KERN_DEBUG "ICALL: ret=%d\n", retval);
+#endif
+			return retval;
+			break;
+		case ISDN_STAT_CINF:
+			if (i < 0)
+				return -1;
+#ifdef ISDN_DEBUG_STATCALLB
+			printk(KERN_DEBUG "CINF: %ld %s\n", c->arg, c->parm.num);
+#endif
+			if (dev->global_flags & ISDN_GLOBAL_STOPPED)
+				return 0;
+			if (strcmp(c->parm.num, "0"))
+				isdn_net_stat_callback(i, c);
+			isdn_tty_stat_callback(i, c);
+			break;
+		case ISDN_STAT_CAUSE:
+#ifdef ISDN_DEBUG_STATCALLB
+			printk(KERN_DEBUG "CAUSE: %ld %s\n", c->arg, c->parm.num);
+#endif
+			printk(KERN_INFO "isdn: %s,ch%ld cause: %s\n",
+			       dev->drvid[di], c->arg, c->parm.num);
+			isdn_tty_stat_callback(i, c);
+#ifdef CONFIG_ISDN_DIVERSION
+                        if (divert_if)
+                         divert_if->stat_callback(c); 
+#endif /* CONFIG_ISDN_DIVERSION */
+			break;
+		case ISDN_STAT_DISPLAY:
+#ifdef ISDN_DEBUG_STATCALLB
+			printk(KERN_DEBUG "DISPLAY: %ld %s\n", c->arg, c->parm.display);
+#endif
+			isdn_tty_stat_callback(i, c);
+#ifdef CONFIG_ISDN_DIVERSION
+                        if (divert_if)
+                         divert_if->stat_callback(c); 
+#endif /* CONFIG_ISDN_DIVERSION */
+			break;
+		case ISDN_STAT_DCONN:
+			if (i < 0)
+				return -1;
+#ifdef ISDN_DEBUG_STATCALLB
+			printk(KERN_DEBUG "DCONN: %ld\n", c->arg);
+#endif
+			if (dev->global_flags & ISDN_GLOBAL_STOPPED)
+				return 0;
+			/* Find any net-device, waiting for D-channel setup */
+			if (isdn_net_stat_callback(i, c))
+				break;
+			isdn_v110_stat_callback(i, c);
+			/* Find any ttyI, waiting for D-channel setup */
+			if (isdn_tty_stat_callback(i, c)) {
+				cmd.driver = di;
+				cmd.arg = c->arg;
+				cmd.command = ISDN_CMD_ACCEPTB;
+				isdn_command(&cmd);
+				break;
+			}
+			break;
+		case ISDN_STAT_DHUP:
+			if (i < 0)
+				return -1;
+#ifdef ISDN_DEBUG_STATCALLB
+			printk(KERN_DEBUG "DHUP: %ld\n", c->arg);
+#endif
+			if (dev->global_flags & ISDN_GLOBAL_STOPPED)
+				return 0;
+			dev->drv[di]->online &= ~(1 << (c->arg));
+			isdn_info_update();
+			/* Signal hangup to network-devices */
+			if (isdn_net_stat_callback(i, c))
+				break;
+			isdn_v110_stat_callback(i, c);
+			if (isdn_tty_stat_callback(i, c))
+				break;
+#ifdef CONFIG_ISDN_DIVERSION
+                        if (divert_if)
+                         divert_if->stat_callback(c); 
+#endif /* CONFIG_ISDN_DIVERSION */
+			break;
+			break;
+		case ISDN_STAT_BCONN:
+			if (i < 0)
+				return -1;
+#ifdef ISDN_DEBUG_STATCALLB
+			printk(KERN_DEBUG "BCONN: %ld\n", c->arg);
+#endif
+			/* Signal B-channel-connect to network-devices */
+			if (dev->global_flags & ISDN_GLOBAL_STOPPED)
+				return 0;
+			dev->drv[di]->online |= (1 << (c->arg));
+			isdn_info_update();
+			if (isdn_net_stat_callback(i, c))
+				break;
+			isdn_v110_stat_callback(i, c);
+			if (isdn_tty_stat_callback(i, c))
+				break;
+			break;
+		case ISDN_STAT_BHUP:
+			if (i < 0)
+				return -1;
+#ifdef ISDN_DEBUG_STATCALLB
+			printk(KERN_DEBUG "BHUP: %ld\n", c->arg);
+#endif
+			if (dev->global_flags & ISDN_GLOBAL_STOPPED)
+				return 0;
+			dev->drv[di]->online &= ~(1 << (c->arg));
+			isdn_info_update();
+#ifdef CONFIG_ISDN_X25
+			/* Signal hangup to network-devices */
+			if (isdn_net_stat_callback(i, c))
+				break;
+#endif
+			isdn_v110_stat_callback(i, c);
+			if (isdn_tty_stat_callback(i, c))
+				break;
+			break;
+		case ISDN_STAT_NODCH:
+			if (i < 0)
+				return -1;
+#ifdef ISDN_DEBUG_STATCALLB
+			printk(KERN_DEBUG "NODCH: %ld\n", c->arg);
+#endif
+			if (dev->global_flags & ISDN_GLOBAL_STOPPED)
+				return 0;
+			if (isdn_net_stat_callback(i, c))
+				break;
+			if (isdn_tty_stat_callback(i, c))
+				break;
+			break;
+		case ISDN_STAT_ADDCH:
+			spin_lock_irqsave(&dev->lock, flags);
+			if (isdn_add_channels(dev->drv[di], di, c->arg, 1)) {
+				spin_unlock_irqrestore(&dev->lock, flags);
+				return -1;
+			}
+			spin_unlock_irqrestore(&dev->lock, flags);
+			isdn_info_update();
+			break;
+		case ISDN_STAT_DISCH:
+			spin_lock_irqsave(&dev->lock, flags);
+			for (i = 0; i < ISDN_MAX_CHANNELS; i++)
+				if ((dev->drvmap[i] == di) &&
+				    (dev->chanmap[i] == c->arg)) {
+				    if (c->parm.num[0])
+				      dev->usage[i] &= ~ISDN_USAGE_DISABLED;
+				    else
+				      if (USG_NONE(dev->usage[i])) {
+					dev->usage[i] |= ISDN_USAGE_DISABLED;
+				      }
+				      else 
+					retval = -1;
+				    break;
+				}
+			spin_unlock_irqrestore(&dev->lock, flags);
+			isdn_info_update();
+			break;
+		case ISDN_STAT_UNLOAD:
+			while (dev->drv[di]->locks > 0) {
+				isdn_unlock_driver(dev->drv[di]);
+			}
+			spin_lock_irqsave(&dev->lock, flags);
+			isdn_tty_stat_callback(i, c);
+			for (i = 0; i < ISDN_MAX_CHANNELS; i++)
+				if (dev->drvmap[i] == di) {
+					dev->drvmap[i] = -1;
+					dev->chanmap[i] = -1;
+					dev->usage[i] &= ~ISDN_USAGE_DISABLED;
+				}
+			dev->drivers--;
+			dev->channels -= dev->drv[di]->channels;
+			kfree(dev->drv[di]->rcverr);
+			kfree(dev->drv[di]->rcvcount);
+			for (i = 0; i < dev->drv[di]->channels; i++)
+				skb_queue_purge(&dev->drv[di]->rpqueue[i]);
+			kfree(dev->drv[di]->rpqueue);
+			kfree(dev->drv[di]->rcv_waitq);
+			kfree(dev->drv[di]);
+			dev->drv[di] = NULL;
+			dev->drvid[di][0] = '\0';
+			isdn_info_update();
+			set_global_features();
+			spin_unlock_irqrestore(&dev->lock, flags);
+			return 0;
+		case ISDN_STAT_L1ERR:
+			break;
+		case CAPI_PUT_MESSAGE:
+			return(isdn_capi_rec_hl_msg(&c->parm.cmsg));
+#ifdef CONFIG_ISDN_TTY_FAX
+		case ISDN_STAT_FAXIND:
+			isdn_tty_stat_callback(i, c);
+			break;
+#endif
+#ifdef CONFIG_ISDN_AUDIO
+		case ISDN_STAT_AUDIO:
+			isdn_tty_stat_callback(i, c);
+			break;
+#endif
+#ifdef CONFIG_ISDN_DIVERSION
+	        case ISDN_STAT_PROT:
+	        case ISDN_STAT_REDIR:
+                        if (divert_if)
+                          return(divert_if->stat_callback(c));
+#endif /* CONFIG_ISDN_DIVERSION */
+		default:
+			return -1;
+	}
+	return 0;
+}
+
+/*
+ * Get integer from char-pointer, set pointer to end of number
+ */
+int
+isdn_getnum(char **p)
+{
+	int v = -1;
+
+	while (*p[0] >= '0' && *p[0] <= '9')
+		v = ((v < 0) ? 0 : (v * 10)) + (int) ((*p[0]++) - '0');
+	return v;
+}
+
+#define DLE 0x10
+
+/*
+ * isdn_readbchan() tries to get data from the read-queue.
+ * It MUST be called with interrupts off.
+ *
+ * Be aware that this is not an atomic operation when sleep != 0, even though 
+ * interrupts are turned off! Well, like that we are currently only called
+ * on behalf of a read system call on raw device files (which are documented
+ * to be dangerous and for for debugging purpose only). The inode semaphore
+ * takes care that this is not called for the same minor device number while
+ * we are sleeping, but access is not serialized against simultaneous read()
+ * from the corresponding ttyI device. Can other ugly events, like changes
+ * of the mapping (di,ch)<->minor, happen during the sleep? --he 
+ */
+int
+isdn_readbchan(int di, int channel, u_char * buf, u_char * fp, int len, wait_queue_head_t *sleep)
+{
+	int count;
+	int count_pull;
+	int count_put;
+	int dflag;
+	struct sk_buff *skb;
+	u_char *cp;
+
+	if (!dev->drv[di])
+		return 0;
+	if (skb_queue_empty(&dev->drv[di]->rpqueue[channel])) {
+		if (sleep)
+			interruptible_sleep_on(sleep);
+		else
+			return 0;
+	}
+	if (len > dev->drv[di]->rcvcount[channel])
+		len = dev->drv[di]->rcvcount[channel];
+	cp = buf;
+	count = 0;
+	while (len) {
+		if (!(skb = skb_peek(&dev->drv[di]->rpqueue[channel])))
+			break;
+#ifdef CONFIG_ISDN_AUDIO
+		if (ISDN_AUDIO_SKB_LOCK(skb))
+			break;
+		ISDN_AUDIO_SKB_LOCK(skb) = 1;
+		if ((ISDN_AUDIO_SKB_DLECOUNT(skb)) || (dev->drv[di]->DLEflag & (1 << channel))) {
+			char *p = skb->data;
+			unsigned long DLEmask = (1 << channel);
+
+			dflag = 0;
+			count_pull = count_put = 0;
+			while ((count_pull < skb->len) && (len > 0)) {
+				len--;
+				if (dev->drv[di]->DLEflag & DLEmask) {
+					*cp++ = DLE;
+					dev->drv[di]->DLEflag &= ~DLEmask;
+				} else {
+					*cp++ = *p;
+					if (*p == DLE) {
+						dev->drv[di]->DLEflag |= DLEmask;
+						(ISDN_AUDIO_SKB_DLECOUNT(skb))--;
+					}
+					p++;
+					count_pull++;
+				}
+				count_put++;
+			}
+			if (count_pull >= skb->len)
+				dflag = 1;
+		} else {
+#endif
+			/* No DLE's in buff, so simply copy it */
+			dflag = 1;
+			if ((count_pull = skb->len) > len) {
+				count_pull = len;
+				dflag = 0;
+			}
+			count_put = count_pull;
+			memcpy(cp, skb->data, count_put);
+			cp += count_put;
+			len -= count_put;
+#ifdef CONFIG_ISDN_AUDIO
+		}
+#endif
+		count += count_put;
+		if (fp) {
+			memset(fp, 0, count_put);
+			fp += count_put;
+		}
+		if (dflag) {
+			/* We got all the data in this buff.
+			 * Now we can dequeue it.
+			 */
+			if (fp)
+				*(fp - 1) = 0xff;
+#ifdef CONFIG_ISDN_AUDIO
+			ISDN_AUDIO_SKB_LOCK(skb) = 0;
+#endif
+			skb = skb_dequeue(&dev->drv[di]->rpqueue[channel]);
+			dev_kfree_skb(skb);
+		} else {
+			/* Not yet emptied this buff, so it
+			 * must stay in the queue, for further calls
+			 * but we pull off the data we got until now.
+			 */
+			skb_pull(skb, count_pull);
+#ifdef CONFIG_ISDN_AUDIO
+			ISDN_AUDIO_SKB_LOCK(skb) = 0;
+#endif
+		}
+		dev->drv[di]->rcvcount[channel] -= count_put;
+	}
+	return count;
+}
+
+static __inline int
+isdn_minor2drv(int minor)
+{
+	return (dev->drvmap[minor]);
+}
+
+static __inline int
+isdn_minor2chan(int minor)
+{
+	return (dev->chanmap[minor]);
+}
+
+static char *
+isdn_statstr(void)
+{
+	static char istatbuf[2048];
+	char *p;
+	int i;
+
+	sprintf(istatbuf, "idmap:\t");
+	p = istatbuf + strlen(istatbuf);
+	for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
+		sprintf(p, "%s ", (dev->drvmap[i] < 0) ? "-" : dev->drvid[dev->drvmap[i]]);
+		p = istatbuf + strlen(istatbuf);
+	}
+	sprintf(p, "\nchmap:\t");
+	p = istatbuf + strlen(istatbuf);
+	for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
+		sprintf(p, "%d ", dev->chanmap[i]);
+		p = istatbuf + strlen(istatbuf);
+	}
+	sprintf(p, "\ndrmap:\t");
+	p = istatbuf + strlen(istatbuf);
+	for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
+		sprintf(p, "%d ", dev->drvmap[i]);
+		p = istatbuf + strlen(istatbuf);
+	}
+	sprintf(p, "\nusage:\t");
+	p = istatbuf + strlen(istatbuf);
+	for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
+		sprintf(p, "%d ", dev->usage[i]);
+		p = istatbuf + strlen(istatbuf);
+	}
+	sprintf(p, "\nflags:\t");
+	p = istatbuf + strlen(istatbuf);
+	for (i = 0; i < ISDN_MAX_DRIVERS; i++) {
+		if (dev->drv[i]) {
+			sprintf(p, "%ld ", dev->drv[i]->online);
+			p = istatbuf + strlen(istatbuf);
+		} else {
+			sprintf(p, "? ");
+			p = istatbuf + strlen(istatbuf);
+		}
+	}
+	sprintf(p, "\nphone:\t");
+	p = istatbuf + strlen(istatbuf);
+	for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
+		sprintf(p, "%s ", dev->num[i]);
+		p = istatbuf + strlen(istatbuf);
+	}
+	sprintf(p, "\n");
+	return istatbuf;
+}
+
+/* Module interface-code */
+
+void
+isdn_info_update(void)
+{
+	infostruct *p = dev->infochain;
+
+	while (p) {
+		*(p->private) = 1;
+		p = (infostruct *) p->next;
+	}
+	wake_up_interruptible(&(dev->info_waitq));
+}
+
+static ssize_t
+isdn_read(struct file *file, char __user *buf, size_t count, loff_t * off)
+{
+	uint minor = MINOR(file->f_dentry->d_inode->i_rdev);
+	int len = 0;
+	int drvidx;
+	int chidx;
+	int retval;
+	char *p;
+
+	lock_kernel();
+	if (minor == ISDN_MINOR_STATUS) {
+		if (!file->private_data) {
+			if (file->f_flags & O_NONBLOCK) {
+				retval = -EAGAIN;
+				goto out;
+			}
+			interruptible_sleep_on(&(dev->info_waitq));
+		}
+		p = isdn_statstr();
+		file->private_data = NULL;
+		if ((len = strlen(p)) <= count) {
+			if (copy_to_user(buf, p, len)) {
+				retval = -EFAULT;
+				goto out;
+			}
+			*off += len;
+			retval = len;
+			goto out;
+		}
+		retval = 0;
+		goto out;
+	}
+	if (!dev->drivers) {
+		retval = -ENODEV;
+		goto out;
+	}
+	if (minor <= ISDN_MINOR_BMAX) {
+		printk(KERN_WARNING "isdn_read minor %d obsolete!\n", minor);
+		drvidx = isdn_minor2drv(minor);
+		if (drvidx < 0) {
+			retval = -ENODEV;
+			goto out;
+		}
+		if (!(dev->drv[drvidx]->flags & DRV_FLAG_RUNNING)) {
+			retval = -ENODEV;
+			goto out;
+		}
+		chidx = isdn_minor2chan(minor);
+		if (!(p = kmalloc(count, GFP_KERNEL))) {
+			retval = -ENOMEM;
+			goto out;
+		}
+		len = isdn_readbchan(drvidx, chidx, p, NULL, count,
+				     &dev->drv[drvidx]->rcv_waitq[chidx]);
+		*off += len;
+		if (copy_to_user(buf,p,len)) 
+			len = -EFAULT;
+		kfree(p);
+		retval = len;
+		goto out;
+	}
+	if (minor <= ISDN_MINOR_CTRLMAX) {
+		drvidx = isdn_minor2drv(minor - ISDN_MINOR_CTRL);
+		if (drvidx < 0) {
+			retval = -ENODEV;
+			goto out;
+		}
+		if (!dev->drv[drvidx]->stavail) {
+			if (file->f_flags & O_NONBLOCK) {
+				retval = -EAGAIN;
+				goto out;
+			}
+			interruptible_sleep_on(&(dev->drv[drvidx]->st_waitq));
+		}
+		if (dev->drv[drvidx]->interface->readstat) {
+			if (count > dev->drv[drvidx]->stavail)
+				count = dev->drv[drvidx]->stavail;
+			len = dev->drv[drvidx]->interface->
+				readstat(buf, count, drvidx,
+					 isdn_minor2chan(minor));
+		} else {
+			len = 0;
+		}
+		if (len)
+			dev->drv[drvidx]->stavail -= len;
+		else
+			dev->drv[drvidx]->stavail = 0;
+		*off += len;
+		retval = len;
+		goto out;
+	}
+#ifdef CONFIG_ISDN_PPP
+	if (minor <= ISDN_MINOR_PPPMAX) {
+		retval = isdn_ppp_read(minor - ISDN_MINOR_PPP, file, buf, count);
+		goto out;
+	}
+#endif
+	retval = -ENODEV;
+ out:
+	unlock_kernel();
+	return retval;
+}
+
+static ssize_t
+isdn_write(struct file *file, const char __user *buf, size_t count, loff_t * off)
+{
+	uint minor = MINOR(file->f_dentry->d_inode->i_rdev);
+	int drvidx;
+	int chidx;
+	int retval;
+
+	if (minor == ISDN_MINOR_STATUS)
+		return -EPERM;
+	if (!dev->drivers)
+		return -ENODEV;
+
+	lock_kernel();
+	if (minor <= ISDN_MINOR_BMAX) {
+		printk(KERN_WARNING "isdn_write minor %d obsolete!\n", minor);
+		drvidx = isdn_minor2drv(minor);
+		if (drvidx < 0) {
+			retval = -ENODEV;
+			goto out;
+		}
+		if (!(dev->drv[drvidx]->flags & DRV_FLAG_RUNNING)) {
+			retval = -ENODEV;
+			goto out;
+		}
+		chidx = isdn_minor2chan(minor);
+		while (isdn_writebuf_stub(drvidx, chidx, buf, count) != count)
+			interruptible_sleep_on(&dev->drv[drvidx]->snd_waitq[chidx]);
+		retval = count;
+		goto out;
+	}
+	if (minor <= ISDN_MINOR_CTRLMAX) {
+		drvidx = isdn_minor2drv(minor - ISDN_MINOR_CTRL);
+		if (drvidx < 0) {
+			retval = -ENODEV;
+			goto out;
+		}
+		/*
+		 * We want to use the isdnctrl device to load the firmware
+		 *
+		 if (!(dev->drv[drvidx]->flags & DRV_FLAG_RUNNING))
+		 return -ENODEV;
+		 */
+		if (dev->drv[drvidx]->interface->writecmd)
+			retval = dev->drv[drvidx]->interface->
+				writecmd(buf, count, drvidx, isdn_minor2chan(minor));
+		else
+			retval = count;
+		goto out;
+	}
+#ifdef CONFIG_ISDN_PPP
+	if (minor <= ISDN_MINOR_PPPMAX) {
+		retval = isdn_ppp_write(minor - ISDN_MINOR_PPP, file, buf, count);
+		goto out;
+	}
+#endif
+	retval = -ENODEV;
+ out:
+	unlock_kernel();
+	return retval;
+}
+
+static unsigned int
+isdn_poll(struct file *file, poll_table * wait)
+{
+	unsigned int mask = 0;
+	unsigned int minor = MINOR(file->f_dentry->d_inode->i_rdev);
+	int drvidx = isdn_minor2drv(minor - ISDN_MINOR_CTRL);
+
+	lock_kernel();
+	if (minor == ISDN_MINOR_STATUS) {
+		poll_wait(file, &(dev->info_waitq), wait);
+		/* mask = POLLOUT | POLLWRNORM; */
+		if (file->private_data) {
+			mask |= POLLIN | POLLRDNORM;
+		}
+		goto out;
+	}
+	if (minor >= ISDN_MINOR_CTRL && minor <= ISDN_MINOR_CTRLMAX) {
+		if (drvidx < 0) {
+			/* driver deregistered while file open */
+			mask = POLLHUP;
+			goto out;
+		}
+		poll_wait(file, &(dev->drv[drvidx]->st_waitq), wait);
+		mask = POLLOUT | POLLWRNORM;
+		if (dev->drv[drvidx]->stavail) {
+			mask |= POLLIN | POLLRDNORM;
+		}
+		goto out;
+	}
+#ifdef CONFIG_ISDN_PPP
+	if (minor <= ISDN_MINOR_PPPMAX) {
+		mask = isdn_ppp_poll(file, wait);
+		goto out;
+	}
+#endif
+	mask = POLLERR;
+ out:
+	unlock_kernel();
+	return mask;
+}
+
+
+static int
+isdn_ioctl(struct inode *inode, struct file *file, uint cmd, ulong arg)
+{
+	uint minor = MINOR(inode->i_rdev);
+	isdn_ctrl c;
+	int drvidx;
+	int chidx;
+	int ret;
+	int i;
+	char __user *p;
+	char *s;
+	union iocpar {
+		char name[10];
+		char bname[22];
+		isdn_ioctl_struct iocts;
+		isdn_net_ioctl_phone phone;
+		isdn_net_ioctl_cfg cfg;
+	} iocpar;
+	void __user *argp = (void __user *)arg;
+
+#define name  iocpar.name
+#define bname iocpar.bname
+#define iocts iocpar.iocts
+#define phone iocpar.phone
+#define cfg   iocpar.cfg
+
+	if (minor == ISDN_MINOR_STATUS) {
+		switch (cmd) {
+			case IIOCGETDVR:
+				return (TTY_DV +
+					(NET_DV << 8) +
+					(INF_DV << 16));
+			case IIOCGETCPS:
+				if (arg) {
+					ulong __user *p = argp;
+					int i;
+					if (!access_ok(VERIFY_WRITE, p,
+							sizeof(ulong) * ISDN_MAX_CHANNELS * 2))
+						return -EFAULT;
+					for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
+						put_user(dev->ibytes[i], p++);
+						put_user(dev->obytes[i], p++);
+					}
+					return 0;
+				} else
+					return -EINVAL;
+				break;
+#ifdef CONFIG_NETDEVICES
+			case IIOCNETGPN:
+				/* Get peer phone number of a connected 
+				 * isdn network interface */
+				if (arg) {
+					if (copy_from_user(&phone, argp, sizeof(phone)))
+						return -EFAULT;
+					return isdn_net_getpeer(&phone, argp);
+				} else
+					return -EINVAL;
+#endif
+			default:
+				return -EINVAL;
+		}
+	}
+	if (!dev->drivers)
+		return -ENODEV;
+	if (minor <= ISDN_MINOR_BMAX) {
+		drvidx = isdn_minor2drv(minor);
+		if (drvidx < 0)
+			return -ENODEV;
+		chidx = isdn_minor2chan(minor);
+		if (!(dev->drv[drvidx]->flags & DRV_FLAG_RUNNING))
+			return -ENODEV;
+		return 0;
+	}
+	if (minor <= ISDN_MINOR_CTRLMAX) {
+/*
+ * isdn net devices manage lots of configuration variables as linked lists.
+ * Those lists must only be manipulated from user space. Some of the ioctl's
+ * service routines access user space and are not atomic. Therefor, ioctl's
+ * manipulating the lists and ioctl's sleeping while accessing the lists
+ * are serialized by means of a semaphore.
+ */
+		switch (cmd) {
+			case IIOCNETDWRSET:
+				printk(KERN_INFO "INFO: ISDN_DW_ABC_EXTENSION not enabled\n");
+				return(-EINVAL);
+			case IIOCNETLCR:
+				printk(KERN_INFO "INFO: ISDN_ABC_LCR_SUPPORT not enabled\n");
+				return -ENODEV;
+#ifdef CONFIG_NETDEVICES
+			case IIOCNETAIF:
+				/* Add a network-interface */
+				if (arg) {
+					if (copy_from_user(name, argp, sizeof(name)))
+						return -EFAULT;
+					s = name;
+				} else {
+					s = NULL;
+				}
+				ret = down_interruptible(&dev->sem);
+				if( ret ) return ret;
+				if ((s = isdn_net_new(s, NULL))) {
+					if (copy_to_user(argp, s, strlen(s) + 1)){
+						ret = -EFAULT;
+					} else {
+						ret = 0;
+					}
+				} else
+					ret = -ENODEV;
+				up(&dev->sem);
+				return ret;
+			case IIOCNETASL:
+				/* Add a slave to a network-interface */
+				if (arg) {
+					if (copy_from_user(bname, argp, sizeof(bname) - 1))
+						return -EFAULT;
+				} else
+					return -EINVAL;
+				ret = down_interruptible(&dev->sem);
+				if( ret ) return ret;
+				if ((s = isdn_net_newslave(bname))) {
+					if (copy_to_user(argp, s, strlen(s) + 1)){
+						ret = -EFAULT;
+					} else {
+						ret = 0;
+					}
+				} else
+					ret = -ENODEV;
+				up(&dev->sem);
+				return ret;
+			case IIOCNETDIF:
+				/* Delete a network-interface */
+				if (arg) {
+					if (copy_from_user(name, argp, sizeof(name)))
+						return -EFAULT;
+					ret = down_interruptible(&dev->sem);
+					if( ret ) return ret;
+					ret = isdn_net_rm(name);
+					up(&dev->sem);
+					return ret;
+				} else
+					return -EINVAL;
+			case IIOCNETSCF:
+				/* Set configurable parameters of a network-interface */
+				if (arg) {
+					if (copy_from_user(&cfg, argp, sizeof(cfg)))
+						return -EFAULT;
+					return isdn_net_setcfg(&cfg);
+				} else
+					return -EINVAL;
+			case IIOCNETGCF:
+				/* Get configurable parameters of a network-interface */
+				if (arg) {
+					if (copy_from_user(&cfg, argp, sizeof(cfg)))
+						return -EFAULT;
+					if (!(ret = isdn_net_getcfg(&cfg))) {
+						if (copy_to_user(argp, &cfg, sizeof(cfg)))
+							return -EFAULT;
+					}
+					return ret;
+				} else
+					return -EINVAL;
+			case IIOCNETANM:
+				/* Add a phone-number to a network-interface */
+				if (arg) {
+					if (copy_from_user(&phone, argp, sizeof(phone)))
+						return -EFAULT;
+					ret = down_interruptible(&dev->sem);
+					if( ret ) return ret;
+					ret = isdn_net_addphone(&phone);
+					up(&dev->sem);
+					return ret;
+				} else
+					return -EINVAL;
+			case IIOCNETGNM:
+				/* Get list of phone-numbers of a network-interface */
+				if (arg) {
+					if (copy_from_user(&phone, argp, sizeof(phone)))
+						return -EFAULT;
+					ret = down_interruptible(&dev->sem);
+					if( ret ) return ret;
+					ret = isdn_net_getphones(&phone, argp);
+					up(&dev->sem);
+					return ret;
+				} else
+					return -EINVAL;
+			case IIOCNETDNM:
+				/* Delete a phone-number of a network-interface */
+				if (arg) {
+					if (copy_from_user(&phone, argp, sizeof(phone)))
+						return -EFAULT;
+					ret = down_interruptible(&dev->sem);
+					if( ret ) return ret;
+					ret = isdn_net_delphone(&phone);
+					up(&dev->sem);
+					return ret;
+				} else
+					return -EINVAL;
+			case IIOCNETDIL:
+				/* Force dialing of a network-interface */
+				if (arg) {
+					if (copy_from_user(name, argp, sizeof(name)))
+						return -EFAULT;
+					return isdn_net_force_dial(name);
+				} else
+					return -EINVAL;
+#ifdef CONFIG_ISDN_PPP
+			case IIOCNETALN:
+				if (!arg)
+					return -EINVAL;
+				if (copy_from_user(name, argp, sizeof(name)))
+					return -EFAULT;
+				return isdn_ppp_dial_slave(name);
+			case IIOCNETDLN:
+				if (!arg)
+					return -EINVAL;
+				if (copy_from_user(name, argp, sizeof(name)))
+					return -EFAULT;
+				return isdn_ppp_hangup_slave(name);
+#endif
+			case IIOCNETHUP:
+				/* Force hangup of a network-interface */
+				if (!arg)
+					return -EINVAL;
+				if (copy_from_user(name, argp, sizeof(name)))
+					return -EFAULT;
+				return isdn_net_force_hangup(name);
+				break;
+#endif                          /* CONFIG_NETDEVICES */
+			case IIOCSETVER:
+				dev->net_verbose = arg;
+				printk(KERN_INFO "isdn: Verbose-Level is %d\n", dev->net_verbose);
+				return 0;
+			case IIOCSETGST:
+				if (arg)
+					dev->global_flags |= ISDN_GLOBAL_STOPPED;
+				else
+					dev->global_flags &= ~ISDN_GLOBAL_STOPPED;
+				printk(KERN_INFO "isdn: Global Mode %s\n",
+				       (dev->global_flags & ISDN_GLOBAL_STOPPED) ? "stopped" : "running");
+				return 0;
+			case IIOCSETBRJ:
+				drvidx = -1;
+				if (arg) {
+					int i;
+					char *p;
+					if (copy_from_user(&iocts, argp,
+					     sizeof(isdn_ioctl_struct)))
+						return -EFAULT;
+					if (strlen(iocts.drvid)) {
+						if ((p = strchr(iocts.drvid, ',')))
+							*p = 0;
+						drvidx = -1;
+						for (i = 0; i < ISDN_MAX_DRIVERS; i++)
+							if (!(strcmp(dev->drvid[i], iocts.drvid))) {
+								drvidx = i;
+								break;
+							}
+					}
+				}
+				if (drvidx == -1)
+					return -ENODEV;
+				if (iocts.arg)
+					dev->drv[drvidx]->flags |= DRV_FLAG_REJBUS;
+				else
+					dev->drv[drvidx]->flags &= ~DRV_FLAG_REJBUS;
+				return 0;
+			case IIOCSIGPRF:
+				dev->profd = current;
+				return 0;
+				break;
+			case IIOCGETPRF:
+				/* Get all Modem-Profiles */
+				if (arg) {
+					char __user *p = argp;
+					int i;
+
+					if (!access_ok(VERIFY_WRITE, argp,
+					(ISDN_MODEM_NUMREG + ISDN_MSNLEN + ISDN_LMSNLEN)
+						   * ISDN_MAX_CHANNELS))
+						return -EFAULT;
+
+					for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
+						if (copy_to_user(p, dev->mdm.info[i].emu.profile,
+						      ISDN_MODEM_NUMREG))
+							return -EFAULT;
+						p += ISDN_MODEM_NUMREG;
+						if (copy_to_user(p, dev->mdm.info[i].emu.pmsn, ISDN_MSNLEN))
+							return -EFAULT;
+						p += ISDN_MSNLEN;
+						if (copy_to_user(p, dev->mdm.info[i].emu.plmsn, ISDN_LMSNLEN))
+							return -EFAULT;
+						p += ISDN_LMSNLEN;
+					}
+					return (ISDN_MODEM_NUMREG + ISDN_MSNLEN + ISDN_LMSNLEN) * ISDN_MAX_CHANNELS;
+				} else
+					return -EINVAL;
+				break;
+			case IIOCSETPRF:
+				/* Set all Modem-Profiles */
+				if (arg) {
+					char __user *p = argp;
+					int i;
+
+					if (!access_ok(VERIFY_READ, argp,
+					(ISDN_MODEM_NUMREG + ISDN_MSNLEN + ISDN_LMSNLEN)
+						   * ISDN_MAX_CHANNELS))
+						return -EFAULT;
+
+					for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
+						if (copy_from_user(dev->mdm.info[i].emu.profile, p,
+						     ISDN_MODEM_NUMREG))
+							return -EFAULT;
+						p += ISDN_MODEM_NUMREG;
+						if (copy_from_user(dev->mdm.info[i].emu.plmsn, p, ISDN_LMSNLEN))
+							return -EFAULT;
+						p += ISDN_LMSNLEN;
+						if (copy_from_user(dev->mdm.info[i].emu.pmsn, p, ISDN_MSNLEN))
+							return -EFAULT;
+						p += ISDN_MSNLEN;
+					}
+					return 0;
+				} else
+					return -EINVAL;
+				break;
+			case IIOCSETMAP:
+			case IIOCGETMAP:
+				/* Set/Get MSN->EAZ-Mapping for a driver */
+				if (arg) {
+
+					if (copy_from_user(&iocts, argp,
+					     sizeof(isdn_ioctl_struct)))
+						return -EFAULT;
+					if (strlen(iocts.drvid)) {
+						drvidx = -1;
+						for (i = 0; i < ISDN_MAX_DRIVERS; i++)
+							if (!(strcmp(dev->drvid[i], iocts.drvid))) {
+								drvidx = i;
+								break;
+							}
+					} else
+						drvidx = 0;
+					if (drvidx == -1)
+						return -ENODEV;
+					if (cmd == IIOCSETMAP) {
+						int loop = 1;
+
+						p = (char __user *) iocts.arg;
+						i = 0;
+						while (loop) {
+							int j = 0;
+
+							while (1) {
+								if (!access_ok(VERIFY_READ, p, 1))
+									return -EFAULT;
+								get_user(bname[j], p++);
+								switch (bname[j]) {
+									case '\0':
+										loop = 0;
+										/* Fall through */
+									case ',':
+										bname[j] = '\0';
+										strcpy(dev->drv[drvidx]->msn2eaz[i], bname);
+										j = ISDN_MSNLEN;
+										break;
+									default:
+										j++;
+								}
+								if (j >= ISDN_MSNLEN)
+									break;
+							}
+							if (++i > 9)
+								break;
+						}
+					} else {
+						p = (char __user *) iocts.arg;
+						for (i = 0; i < 10; i++) {
+							sprintf(bname, "%s%s",
+								strlen(dev->drv[drvidx]->msn2eaz[i]) ?
+								dev->drv[drvidx]->msn2eaz[i] : "_",
+								(i < 9) ? "," : "\0");
+							if (copy_to_user(p, bname, strlen(bname) + 1))
+								return -EFAULT;
+							p += strlen(bname);
+						}
+					}
+					return 0;
+				} else
+					return -EINVAL;
+			case IIOCDBGVAR:
+				if (arg) {
+					if (copy_to_user(argp, &dev, sizeof(ulong)))
+						return -EFAULT;
+					return 0;
+				} else
+					return -EINVAL;
+				break;
+			default:
+				if ((cmd & IIOCDRVCTL) == IIOCDRVCTL)
+					cmd = ((cmd >> _IOC_NRSHIFT) & _IOC_NRMASK) & ISDN_DRVIOCTL_MASK;
+				else
+					return -EINVAL;
+				if (arg) {
+					int i;
+					char *p;
+					if (copy_from_user(&iocts, argp, sizeof(isdn_ioctl_struct)))
+						return -EFAULT;
+					if (strlen(iocts.drvid)) {
+						if ((p = strchr(iocts.drvid, ',')))
+							*p = 0;
+						drvidx = -1;
+						for (i = 0; i < ISDN_MAX_DRIVERS; i++)
+							if (!(strcmp(dev->drvid[i], iocts.drvid))) {
+								drvidx = i;
+								break;
+							}
+					} else
+						drvidx = 0;
+					if (drvidx == -1)
+						return -ENODEV;
+					if (!access_ok(VERIFY_WRITE, argp,
+					     sizeof(isdn_ioctl_struct)))
+						return -EFAULT;
+					c.driver = drvidx;
+					c.command = ISDN_CMD_IOCTL;
+					c.arg = cmd;
+					memcpy(c.parm.num, &iocts.arg, sizeof(ulong));
+					ret = isdn_command(&c);
+					memcpy(&iocts.arg, c.parm.num, sizeof(ulong));
+					if (copy_to_user(argp, &iocts, sizeof(isdn_ioctl_struct)))
+						return -EFAULT;
+					return ret;
+				} else
+					return -EINVAL;
+		}
+	}
+#ifdef CONFIG_ISDN_PPP
+	if (minor <= ISDN_MINOR_PPPMAX)
+		return (isdn_ppp_ioctl(minor - ISDN_MINOR_PPP, file, cmd, arg));
+#endif
+	return -ENODEV;
+
+#undef name
+#undef bname
+#undef iocts
+#undef phone
+#undef cfg
+}
+
+/*
+ * Open the device code.
+ */
+static int
+isdn_open(struct inode *ino, struct file *filep)
+{
+	uint minor = MINOR(ino->i_rdev);
+	int drvidx;
+	int chidx;
+	int retval = -ENODEV;
+
+
+	if (minor == ISDN_MINOR_STATUS) {
+		infostruct *p;
+
+		if ((p = kmalloc(sizeof(infostruct), GFP_KERNEL))) {
+			p->next = (char *) dev->infochain;
+			p->private = (char *) &(filep->private_data);
+			dev->infochain = p;
+			/* At opening we allow a single update */
+			filep->private_data = (char *) 1;
+			retval = 0;
+			goto out;
+		} else {
+			retval = -ENOMEM;
+			goto out;
+		}
+	}
+	if (!dev->channels)
+		goto out;
+	if (minor <= ISDN_MINOR_BMAX) {
+		printk(KERN_WARNING "isdn_open minor %d obsolete!\n", minor);
+		drvidx = isdn_minor2drv(minor);
+		if (drvidx < 0)
+			goto out;
+		chidx = isdn_minor2chan(minor);
+		if (!(dev->drv[drvidx]->flags & DRV_FLAG_RUNNING))
+			goto out;
+		if (!(dev->drv[drvidx]->online & (1 << chidx)))
+			goto out;
+		isdn_lock_drivers();
+		retval = 0;
+		goto out;
+	}
+	if (minor <= ISDN_MINOR_CTRLMAX) {
+		drvidx = isdn_minor2drv(minor - ISDN_MINOR_CTRL);
+		if (drvidx < 0)
+			goto out;
+		isdn_lock_drivers();
+		retval = 0;
+		goto out;
+	}
+#ifdef CONFIG_ISDN_PPP
+	if (minor <= ISDN_MINOR_PPPMAX) {
+		retval = isdn_ppp_open(minor - ISDN_MINOR_PPP, filep);
+		if (retval == 0)
+			isdn_lock_drivers();
+		goto out;
+	}
+#endif
+ out:
+	nonseekable_open(ino, filep);
+	return retval;
+}
+
+static int
+isdn_close(struct inode *ino, struct file *filep)
+{
+	uint minor = MINOR(ino->i_rdev);
+
+	lock_kernel();
+	if (minor == ISDN_MINOR_STATUS) {
+		infostruct *p = dev->infochain;
+		infostruct *q = NULL;
+
+		while (p) {
+			if (p->private == (char *) &(filep->private_data)) {
+				if (q)
+					q->next = p->next;
+				else
+					dev->infochain = (infostruct *) (p->next);
+				kfree(p);
+				goto out;
+			}
+			q = p;
+			p = (infostruct *) (p->next);
+		}
+		printk(KERN_WARNING "isdn: No private data while closing isdnctrl\n");
+		goto out;
+	}
+	isdn_unlock_drivers();
+	if (minor <= ISDN_MINOR_BMAX)
+		goto out;
+	if (minor <= ISDN_MINOR_CTRLMAX) {
+		if (dev->profd == current)
+			dev->profd = NULL;
+		goto out;
+	}
+#ifdef CONFIG_ISDN_PPP
+	if (minor <= ISDN_MINOR_PPPMAX)
+		isdn_ppp_release(minor - ISDN_MINOR_PPP, filep);
+#endif
+
+ out:
+	unlock_kernel();
+	return 0;
+}
+
+static struct file_operations isdn_fops =
+{
+	.owner		= THIS_MODULE,
+	.llseek		= no_llseek,
+	.read		= isdn_read,
+	.write		= isdn_write,
+	.poll		= isdn_poll,
+	.ioctl		= isdn_ioctl,
+	.open		= isdn_open,
+	.release	= isdn_close,
+};
+
+char *
+isdn_map_eaz2msn(char *msn, int di)
+{
+	isdn_driver_t *this = dev->drv[di];
+	int i;
+
+	if (strlen(msn) == 1) {
+		i = msn[0] - '0';
+		if ((i >= 0) && (i <= 9))
+			if (strlen(this->msn2eaz[i]))
+				return (this->msn2eaz[i]);
+	}
+	return (msn);
+}
+
+/*
+ * Find an unused ISDN-channel, whose feature-flags match the
+ * given L2- and L3-protocols.
+ */
+#define L2V (~(ISDN_FEATURE_L2_V11096|ISDN_FEATURE_L2_V11019|ISDN_FEATURE_L2_V11038))
+
+/*
+ * This function must be called with holding the dev->lock.
+ */
+int
+isdn_get_free_channel(int usage, int l2_proto, int l3_proto, int pre_dev
+		      ,int pre_chan, char *msn)
+{
+	int i;
+	ulong features;
+	ulong vfeatures;
+
+	features = ((1 << l2_proto) | (0x10000 << l3_proto));
+	vfeatures = (((1 << l2_proto) | (0x10000 << l3_proto)) &
+		     ~(ISDN_FEATURE_L2_V11096|ISDN_FEATURE_L2_V11019|ISDN_FEATURE_L2_V11038));
+	/* If Layer-2 protocol is V.110, accept drivers with
+	 * transparent feature even if these don't support V.110
+	 * because we can emulate this in linklevel.
+	 */
+	for (i = 0; i < ISDN_MAX_CHANNELS; i++)
+		if (USG_NONE(dev->usage[i]) &&
+		    (dev->drvmap[i] != -1)) {
+			int d = dev->drvmap[i];
+			if ((dev->usage[i] & ISDN_USAGE_EXCLUSIVE) &&
+			((pre_dev != d) || (pre_chan != dev->chanmap[i])))
+				continue;
+			if (!strcmp(isdn_map_eaz2msn(msn, d), "-"))
+				continue;
+			if (dev->usage[i] & ISDN_USAGE_DISABLED)
+			        continue; /* usage not allowed */
+			if (dev->drv[d]->flags & DRV_FLAG_RUNNING) {
+				if (((dev->drv[d]->interface->features & features) == features) ||
+				    (((dev->drv[d]->interface->features & vfeatures) == vfeatures) &&
+				     (dev->drv[d]->interface->features & ISDN_FEATURE_L2_TRANS))) {
+					if ((pre_dev < 0) || (pre_chan < 0)) {
+						dev->usage[i] &= ISDN_USAGE_EXCLUSIVE;
+						dev->usage[i] |= usage;
+						isdn_info_update();
+						return i;
+					} else {
+						if ((pre_dev == d) && (pre_chan == dev->chanmap[i])) {
+							dev->usage[i] &= ISDN_USAGE_EXCLUSIVE;
+							dev->usage[i] |= usage;
+							isdn_info_update();
+							return i;
+						}
+					}
+				}
+			}
+		}
+	return -1;
+}
+
+/*
+ * Set state of ISDN-channel to 'unused'
+ */
+void
+isdn_free_channel(int di, int ch, int usage)
+{
+	int i;
+
+	for (i = 0; i < ISDN_MAX_CHANNELS; i++)
+		if (((!usage) || ((dev->usage[i] & ISDN_USAGE_MASK) == usage)) &&
+		    (dev->drvmap[i] == di) &&
+		    (dev->chanmap[i] == ch)) {
+			dev->usage[i] &= (ISDN_USAGE_NONE | ISDN_USAGE_EXCLUSIVE);
+			strcpy(dev->num[i], "???");
+			dev->ibytes[i] = 0;
+			dev->obytes[i] = 0;
+// 20.10.99 JIM, try to reinitialize v110 !
+			dev->v110emu[i] = 0;
+			atomic_set(&(dev->v110use[i]), 0);
+			isdn_v110_close(dev->v110[i]);
+			dev->v110[i] = NULL;
+// 20.10.99 JIM, try to reinitialize v110 !
+			isdn_info_update();
+			skb_queue_purge(&dev->drv[di]->rpqueue[ch]);
+		}
+}
+
+/*
+ * Cancel Exclusive-Flag for ISDN-channel
+ */
+void
+isdn_unexclusive_channel(int di, int ch)
+{
+	int i;
+
+	for (i = 0; i < ISDN_MAX_CHANNELS; i++)
+		if ((dev->drvmap[i] == di) &&
+		    (dev->chanmap[i] == ch)) {
+			dev->usage[i] &= ~ISDN_USAGE_EXCLUSIVE;
+			isdn_info_update();
+			return;
+		}
+}
+
+/*
+ *  writebuf replacement for SKB_ABLE drivers
+ */
+static int
+isdn_writebuf_stub(int drvidx, int chan, const u_char __user * buf, int len)
+{
+	int ret;
+	int hl = dev->drv[drvidx]->interface->hl_hdrlen;
+	struct sk_buff *skb = alloc_skb(hl + len, GFP_ATOMIC);
+
+	if (!skb)
+		return 0;
+	skb_reserve(skb, hl);
+	copy_from_user(skb_put(skb, len), buf, len);
+	ret = dev->drv[drvidx]->interface->writebuf_skb(drvidx, chan, 1, skb);
+	if (ret <= 0)
+		dev_kfree_skb(skb);
+	if (ret > 0)
+		dev->obytes[isdn_dc2minor(drvidx, chan)] += ret;
+	return ret;
+}
+
+/*
+ * Return: length of data on success, -ERRcode on failure.
+ */
+int
+isdn_writebuf_skb_stub(int drvidx, int chan, int ack, struct sk_buff *skb)
+{
+	int ret;
+	struct sk_buff *nskb = NULL;
+	int v110_ret = skb->len;
+	int idx = isdn_dc2minor(drvidx, chan);
+
+	if (dev->v110[idx]) {
+		atomic_inc(&dev->v110use[idx]);
+		nskb = isdn_v110_encode(dev->v110[idx], skb);
+		atomic_dec(&dev->v110use[idx]);
+		if (!nskb)
+			return 0;
+		v110_ret = *((int *)nskb->data);
+		skb_pull(nskb, sizeof(int));
+		if (!nskb->len) {
+			dev_kfree_skb(nskb);
+			return v110_ret;
+		}
+		/* V.110 must always be acknowledged */
+		ack = 1;
+		ret = dev->drv[drvidx]->interface->writebuf_skb(drvidx, chan, ack, nskb);
+	} else {
+		int hl = dev->drv[drvidx]->interface->hl_hdrlen;
+
+		if( skb_headroom(skb) < hl ){
+			/* 
+			 * This should only occur when new HL driver with
+			 * increased hl_hdrlen was loaded after netdevice
+			 * was created and connected to the new driver.
+			 *
+			 * The V.110 branch (re-allocates on its own) does
+			 * not need this
+			 */
+			struct sk_buff * skb_tmp;
+
+			skb_tmp = skb_realloc_headroom(skb, hl);
+			printk(KERN_DEBUG "isdn_writebuf_skb_stub: reallocating headroom%s\n", skb_tmp ? "" : " failed");
+			if (!skb_tmp) return -ENOMEM; /* 0 better? */
+			ret = dev->drv[drvidx]->interface->writebuf_skb(drvidx, chan, ack, skb_tmp);
+			if( ret > 0 ){
+				dev_kfree_skb(skb);
+			} else {
+				dev_kfree_skb(skb_tmp);
+			}
+		} else {
+			ret = dev->drv[drvidx]->interface->writebuf_skb(drvidx, chan, ack, skb);
+		}
+	}
+	if (ret > 0) {
+		dev->obytes[idx] += ret;
+		if (dev->v110[idx]) {
+			atomic_inc(&dev->v110use[idx]);
+			dev->v110[idx]->skbuser++;
+			atomic_dec(&dev->v110use[idx]);
+			/* For V.110 return unencoded data length */
+			ret = v110_ret;
+			/* if the complete frame was send we free the skb;
+			   if not upper function will requeue the skb */ 
+			if (ret == skb->len)
+				dev_kfree_skb(skb);
+		}
+	} else
+		if (dev->v110[idx])
+			dev_kfree_skb(nskb);
+	return ret;
+}
+
+int
+isdn_add_channels(isdn_driver_t *d, int drvidx, int n, int adding)
+{
+	int j, k, m;
+
+	init_waitqueue_head(&d->st_waitq);
+	if (d->flags & DRV_FLAG_RUNNING)
+		return -1;
+       	if (n < 1) return 0;
+
+	m = (adding) ? d->channels + n : n;
+
+	if (dev->channels + n > ISDN_MAX_CHANNELS) {
+		printk(KERN_WARNING "register_isdn: Max. %d channels supported\n",
+		       ISDN_MAX_CHANNELS);
+		return -1;
+	}
+
+	if ((adding) && (d->rcverr))
+		kfree(d->rcverr);
+	if (!(d->rcverr = kmalloc(sizeof(int) * m, GFP_ATOMIC))) {
+		printk(KERN_WARNING "register_isdn: Could not alloc rcverr\n");
+		return -1;
+	}
+	memset((char *) d->rcverr, 0, sizeof(int) * m);
+
+	if ((adding) && (d->rcvcount))
+		kfree(d->rcvcount);
+	if (!(d->rcvcount = kmalloc(sizeof(int) * m, GFP_ATOMIC))) {
+		printk(KERN_WARNING "register_isdn: Could not alloc rcvcount\n");
+		if (!adding) kfree(d->rcverr);
+		return -1;
+	}
+	memset((char *) d->rcvcount, 0, sizeof(int) * m);
+
+	if ((adding) && (d->rpqueue)) {
+		for (j = 0; j < d->channels; j++)
+			skb_queue_purge(&d->rpqueue[j]);
+		kfree(d->rpqueue);
+	}
+	if (!(d->rpqueue = kmalloc(sizeof(struct sk_buff_head) * m, GFP_ATOMIC))) {
+		printk(KERN_WARNING "register_isdn: Could not alloc rpqueue\n");
+		if (!adding) {
+			kfree(d->rcvcount);
+			kfree(d->rcverr);
+		}
+		return -1; 
+	}
+	for (j = 0; j < m; j++) {
+		skb_queue_head_init(&d->rpqueue[j]);
+	}
+
+	if ((adding) && (d->rcv_waitq))
+		kfree(d->rcv_waitq);
+	d->rcv_waitq = kmalloc(sizeof(wait_queue_head_t) * 2 * m, GFP_ATOMIC);
+	if (!d->rcv_waitq) {
+		printk(KERN_WARNING "register_isdn: Could not alloc rcv_waitq\n");
+		if (!adding) {
+			kfree(d->rpqueue);
+			kfree(d->rcvcount);
+			kfree(d->rcverr);
+		}
+		return -1;
+	}
+	d->snd_waitq = d->rcv_waitq + m;
+	for (j = 0; j < m; j++) {
+		init_waitqueue_head(&d->rcv_waitq[j]);
+		init_waitqueue_head(&d->snd_waitq[j]);
+	}
+
+	dev->channels += n;
+	for (j = d->channels; j < m; j++)
+		for (k = 0; k < ISDN_MAX_CHANNELS; k++)
+			if (dev->chanmap[k] < 0) {
+				dev->chanmap[k] = j;
+				dev->drvmap[k] = drvidx;
+				break;
+			}
+	d->channels = m;
+	return 0;
+}
+
+/*
+ * Low-level-driver registration
+ */
+
+static void
+set_global_features(void)
+{
+	int drvidx;
+
+	dev->global_features = 0;
+	for (drvidx = 0; drvidx < ISDN_MAX_DRIVERS; drvidx++) {
+		if (!dev->drv[drvidx])
+			continue;
+		if (dev->drv[drvidx]->interface)
+			dev->global_features |= dev->drv[drvidx]->interface->features;
+	}
+}
+
+#ifdef CONFIG_ISDN_DIVERSION
+
+static char *map_drvname(int di)
+{
+  if ((di < 0) || (di >= ISDN_MAX_DRIVERS)) 
+    return(NULL);
+  return(dev->drvid[di]); /* driver name */
+} /* map_drvname */
+
+static int map_namedrv(char *id)
+{  int i;
+
+   for (i = 0; i < ISDN_MAX_DRIVERS; i++)
+    { if (!strcmp(dev->drvid[i],id)) 
+        return(i);
+    }
+   return(-1);
+} /* map_namedrv */
+
+int DIVERT_REG_NAME(isdn_divert_if *i_div)
+{
+  if (i_div->if_magic != DIVERT_IF_MAGIC) 
+    return(DIVERT_VER_ERR);
+  switch (i_div->cmd)
+    {
+      case DIVERT_CMD_REL:
+        if (divert_if != i_div) 
+          return(DIVERT_REL_ERR);
+        divert_if = NULL; /* free interface */
+        return(DIVERT_NO_ERR);
+
+      case DIVERT_CMD_REG:
+        if (divert_if) 
+          return(DIVERT_REG_ERR);
+        i_div->ll_cmd = isdn_command; /* set command function */
+        i_div->drv_to_name = map_drvname; 
+        i_div->name_to_drv = map_namedrv; 
+        divert_if = i_div; /* remember interface */
+        return(DIVERT_NO_ERR);
+
+      default:
+        return(DIVERT_CMD_ERR);   
+    }
+} /* DIVERT_REG_NAME */
+
+EXPORT_SYMBOL(DIVERT_REG_NAME);
+
+#endif /* CONFIG_ISDN_DIVERSION */
+
+
+EXPORT_SYMBOL(register_isdn);
+#ifdef CONFIG_ISDN_PPP
+EXPORT_SYMBOL(isdn_ppp_register_compressor);
+EXPORT_SYMBOL(isdn_ppp_unregister_compressor);
+#endif
+
+int
+register_isdn(isdn_if * i)
+{
+	isdn_driver_t *d;
+	int j;
+	ulong flags;
+	int drvidx;
+
+	if (dev->drivers >= ISDN_MAX_DRIVERS) {
+		printk(KERN_WARNING "register_isdn: Max. %d drivers supported\n",
+		       ISDN_MAX_DRIVERS);
+		return 0;
+	}
+	if (!i->writebuf_skb) {
+		printk(KERN_WARNING "register_isdn: No write routine given.\n");
+		return 0;
+	}
+	if (!(d = kmalloc(sizeof(isdn_driver_t), GFP_KERNEL))) {
+		printk(KERN_WARNING "register_isdn: Could not alloc driver-struct\n");
+		return 0;
+	}
+	memset((char *) d, 0, sizeof(isdn_driver_t));
+
+	d->maxbufsize = i->maxbufsize;
+	d->pktcount = 0;
+	d->stavail = 0;
+	d->flags = DRV_FLAG_LOADED;
+	d->online = 0;
+	d->interface = i;
+	d->channels = 0;
+	spin_lock_irqsave(&dev->lock, flags);
+	for (drvidx = 0; drvidx < ISDN_MAX_DRIVERS; drvidx++)
+		if (!dev->drv[drvidx])
+			break;
+	if (isdn_add_channels(d, drvidx, i->channels, 0)) {
+		spin_unlock_irqrestore(&dev->lock, flags);
+		kfree(d);
+		return 0;
+	}
+	i->channels = drvidx;
+	i->rcvcallb_skb = isdn_receive_skb_callback;
+	i->statcallb = isdn_status_callback;
+	if (!strlen(i->id))
+		sprintf(i->id, "line%d", drvidx);
+	for (j = 0; j < drvidx; j++)
+		if (!strcmp(i->id, dev->drvid[j]))
+			sprintf(i->id, "line%d", drvidx);
+	dev->drv[drvidx] = d;
+	strcpy(dev->drvid[drvidx], i->id);
+	isdn_info_update();
+	dev->drivers++;
+	set_global_features();
+	spin_unlock_irqrestore(&dev->lock, flags);
+	return 1;
+}
+
+/*
+ *****************************************************************************
+ * And now the modules code.
+ *****************************************************************************
+ */
+
+static char *
+isdn_getrev(const char *revision)
+{
+	char *rev;
+	char *p;
+
+	if ((p = strchr(revision, ':'))) {
+		rev = p + 2;
+		p = strchr(rev, '$');
+		*--p = 0;
+	} else
+		rev = "???";
+	return rev;
+}
+
+/*
+ * Allocate and initialize all data, register modem-devices
+ */
+static int __init isdn_init(void)
+{
+	int i;
+	char tmprev[50];
+
+	if (!(dev = (isdn_dev *) vmalloc(sizeof(isdn_dev)))) {
+		printk(KERN_WARNING "isdn: Could not allocate device-struct.\n");
+		return -EIO;
+	}
+	memset((char *) dev, 0, sizeof(isdn_dev));
+	init_timer(&dev->timer);
+	dev->timer.function = isdn_timer_funct;
+	spin_lock_init(&dev->lock);
+	spin_lock_init(&dev->timerlock);
+#ifdef MODULE
+	dev->owner = THIS_MODULE;
+#endif
+	init_MUTEX(&dev->sem);
+	init_waitqueue_head(&dev->info_waitq);
+	for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
+		dev->drvmap[i] = -1;
+		dev->chanmap[i] = -1;
+		dev->m_idx[i] = -1;
+		strcpy(dev->num[i], "???");
+		init_waitqueue_head(&dev->mdm.info[i].open_wait);
+		init_waitqueue_head(&dev->mdm.info[i].close_wait);
+	}
+	if (register_chrdev(ISDN_MAJOR, "isdn", &isdn_fops)) {
+		printk(KERN_WARNING "isdn: Could not register control devices\n");
+		vfree(dev);
+		return -EIO;
+	}
+	if ((isdn_tty_modem_init()) < 0) {
+		printk(KERN_WARNING "isdn: Could not register tty devices\n");
+		vfree(dev);
+		unregister_chrdev(ISDN_MAJOR, "isdn");
+		return -EIO;
+	}
+#ifdef CONFIG_ISDN_PPP
+	if (isdn_ppp_init() < 0) {
+		printk(KERN_WARNING "isdn: Could not create PPP-device-structs\n");
+		isdn_tty_exit();
+		unregister_chrdev(ISDN_MAJOR, "isdn");
+		vfree(dev);
+		return -EIO;
+	}
+#endif                          /* CONFIG_ISDN_PPP */
+
+	strcpy(tmprev, isdn_revision);
+	printk(KERN_NOTICE "ISDN subsystem Rev: %s/", isdn_getrev(tmprev));
+	strcpy(tmprev, isdn_tty_revision);
+	printk("%s/", isdn_getrev(tmprev));
+	strcpy(tmprev, isdn_net_revision);
+	printk("%s/", isdn_getrev(tmprev));
+	strcpy(tmprev, isdn_ppp_revision);
+	printk("%s/", isdn_getrev(tmprev));
+	strcpy(tmprev, isdn_audio_revision);
+	printk("%s/", isdn_getrev(tmprev));
+	strcpy(tmprev, isdn_v110_revision);
+	printk("%s", isdn_getrev(tmprev));
+
+#ifdef MODULE
+	printk(" loaded\n");
+#else
+	printk("\n");
+#endif
+	isdn_info_update();
+	return 0;
+}
+
+/*
+ * Unload module
+ */
+static void __exit isdn_exit(void)
+{
+#ifdef CONFIG_ISDN_PPP
+	isdn_ppp_cleanup();
+#endif
+	if (isdn_net_rmall() < 0) {
+		printk(KERN_WARNING "isdn: net-device busy, remove cancelled\n");
+		return;
+	}
+	isdn_tty_exit();
+	unregister_chrdev(ISDN_MAJOR, "isdn");
+	del_timer(&dev->timer);
+	/* call vfree with interrupts enabled, else it will hang */
+	vfree(dev);
+	printk(KERN_NOTICE "ISDN-subsystem unloaded\n");
+}
+
+module_init(isdn_init);
+module_exit(isdn_exit);