Moved, renamed, and deleted files

The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.

1 files changed, 0 insertions, 714 deletions

diff --git a/ANDROID_3.4.5/drivers/net/can/slcan.c b/ANDROID_3.4.5/drivers/net/can/slcan.c
deleted file mode 100644
index 034c16b6..00000000
--- a/ANDROID_3.4.5/drivers/net/can/slcan.c
+++ /dev/null
@@ -1,714 +0,0 @@
-/*
- * slcan.c - serial line CAN interface driver (using tty line discipline)
- *
- * This file is derived from linux/drivers/net/slip/slip.c
- *
- * slip.c Authors  : Laurence Culhane <loz@holmes.demon.co.uk>
- *                   Fred N. van Kempen <waltje@uwalt.nl.mugnet.org>
- * slcan.c Author  : Oliver Hartkopp <socketcan@hartkopp.net>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307. You can also get it
- * at http://www.gnu.org/licenses/gpl.html
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
- * DAMAGE.
- *
- */
-
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-
-#include <linux/uaccess.h>
-#include <linux/bitops.h>
-#include <linux/string.h>
-#include <linux/tty.h>
-#include <linux/errno.h>
-#include <linux/netdevice.h>
-#include <linux/skbuff.h>
-#include <linux/rtnetlink.h>
-#include <linux/if_arp.h>
-#include <linux/if_ether.h>
-#include <linux/sched.h>
-#include <linux/delay.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/can.h>
-
-static __initdata const char banner[] =
-	KERN_INFO "slcan: serial line CAN interface driver\n";
-
-MODULE_ALIAS_LDISC(N_SLCAN);
-MODULE_DESCRIPTION("serial line CAN interface");
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Oliver Hartkopp <socketcan@hartkopp.net>");
-
-#define SLCAN_MAGIC 0x53CA
-
-static int maxdev = 10;		/* MAX number of SLCAN channels;
-				   This can be overridden with
-				   insmod slcan.ko maxdev=nnn	*/
-module_param(maxdev, int, 0);
-MODULE_PARM_DESC(maxdev, "Maximum number of slcan interfaces");
-
-/* maximum rx buffer len: extended CAN frame with timestamp */
-#define SLC_MTU (sizeof("T1111222281122334455667788EA5F\r")+1)
-
-struct slcan {
-	int			magic;
-
-	/* Various fields. */
-	struct tty_struct	*tty;		/* ptr to TTY structure	     */
-	struct net_device	*dev;		/* easy for intr handling    */
-	spinlock_t		lock;
-
-	/* These are pointers to the malloc()ed frame buffers. */
-	unsigned char		rbuff[SLC_MTU];	/* receiver buffer	     */
-	int			rcount;         /* received chars counter    */
-	unsigned char		xbuff[SLC_MTU];	/* transmitter buffer	     */
-	unsigned char		*xhead;         /* pointer to next XMIT byte */
-	int			xleft;          /* bytes left in XMIT queue  */
-
-	unsigned long		flags;		/* Flag values/ mode etc     */
-#define SLF_INUSE		0		/* Channel in use            */
-#define SLF_ERROR		1               /* Parity, etc. error        */
-};
-
-static struct net_device **slcan_devs;
-
- /************************************************************************
-  *			SLCAN ENCAPSULATION FORMAT			 *
-  ************************************************************************/
-
-/*
- * A CAN frame has a can_id (11 bit standard frame format OR 29 bit extended
- * frame format) a data length code (can_dlc) which can be from 0 to 8
- * and up to <can_dlc> data bytes as payload.
- * Additionally a CAN frame may become a remote transmission frame if the
- * RTR-bit is set. This causes another ECU to send a CAN frame with the
- * given can_id.
- *
- * The SLCAN ASCII representation of these different frame types is:
- * <type> <id> <dlc> <data>*
- *
- * Extended frames (29 bit) are defined by capital characters in the type.
- * RTR frames are defined as 'r' types - normal frames have 't' type:
- * t => 11 bit data frame
- * r => 11 bit RTR frame
- * T => 29 bit data frame
- * R => 29 bit RTR frame
- *
- * The <id> is 3 (standard) or 8 (extended) bytes in ASCII Hex (base64).
- * The <dlc> is a one byte ASCII number ('0' - '8')
- * The <data> section has at much ASCII Hex bytes as defined by the <dlc>
- *
- * Examples:
- *
- * t1230 : can_id 0x123, can_dlc 0, no data
- * t4563112233 : can_id 0x456, can_dlc 3, data 0x11 0x22 0x33
- * T12ABCDEF2AA55 : extended can_id 0x12ABCDEF, can_dlc 2, data 0xAA 0x55
- * r1230 : can_id 0x123, can_dlc 0, no data, remote transmission request
- *
- */
-
- /************************************************************************
-  *			STANDARD SLCAN DECAPSULATION			 *
-  ************************************************************************/
-
-/* Send one completely decapsulated can_frame to the network layer */
-static void slc_bump(struct slcan *sl)
-{
-	struct sk_buff *skb;
-	struct can_frame cf;
-	int i, dlc_pos, tmp;
-	unsigned long ultmp;
-	char cmd = sl->rbuff[0];
-
-	if ((cmd != 't') && (cmd != 'T') && (cmd != 'r') && (cmd != 'R'))
-		return;
-
-	if (cmd & 0x20) /* tiny chars 'r' 't' => standard frame format */
-		dlc_pos = 4; /* dlc position tiiid */
-	else
-		dlc_pos = 9; /* dlc position Tiiiiiiiid */
-
-	if (!((sl->rbuff[dlc_pos] >= '0') && (sl->rbuff[dlc_pos] < '9')))
-		return;
-
-	cf.can_dlc = sl->rbuff[dlc_pos] - '0'; /* get can_dlc from ASCII val */
-
-	sl->rbuff[dlc_pos] = 0; /* terminate can_id string */
-
-	if (strict_strtoul(sl->rbuff+1, 16, &ultmp))
-		return;
-
-	cf.can_id = ultmp;
-
-	if (!(cmd & 0x20)) /* NO tiny chars => extended frame format */
-		cf.can_id |= CAN_EFF_FLAG;
-
-	if ((cmd | 0x20) == 'r') /* RTR frame */
-		cf.can_id |= CAN_RTR_FLAG;
-
-	*(u64 *) (&cf.data) = 0; /* clear payload */
-
-	for (i = 0, dlc_pos++; i < cf.can_dlc; i++) {
-		tmp = hex_to_bin(sl->rbuff[dlc_pos++]);
-		if (tmp < 0)
-			return;
-		cf.data[i] = (tmp << 4);
-		tmp = hex_to_bin(sl->rbuff[dlc_pos++]);
-		if (tmp < 0)
-			return;
-		cf.data[i] |= tmp;
-	}
-
-	skb = dev_alloc_skb(sizeof(struct can_frame));
-	if (!skb)
-		return;
-
-	skb->dev = sl->dev;
-	skb->protocol = htons(ETH_P_CAN);
-	skb->pkt_type = PACKET_BROADCAST;
-	skb->ip_summed = CHECKSUM_UNNECESSARY;
-	memcpy(skb_put(skb, sizeof(struct can_frame)),
-	       &cf, sizeof(struct can_frame));
-	netif_rx_ni(skb);
-
-	sl->dev->stats.rx_packets++;
-	sl->dev->stats.rx_bytes += cf.can_dlc;
-}
-
-/* parse tty input stream */
-static void slcan_unesc(struct slcan *sl, unsigned char s)
-{
-
-	if ((s == '\r') || (s == '\a')) { /* CR or BEL ends the pdu */
-		if (!test_and_clear_bit(SLF_ERROR, &sl->flags) &&
-		    (sl->rcount > 4))  {
-			slc_bump(sl);
-		}
-		sl->rcount = 0;
-	} else {
-		if (!test_bit(SLF_ERROR, &sl->flags))  {
-			if (sl->rcount < SLC_MTU)  {
-				sl->rbuff[sl->rcount++] = s;
-				return;
-			} else {
-				sl->dev->stats.rx_over_errors++;
-				set_bit(SLF_ERROR, &sl->flags);
-			}
-		}
-	}
-}
-
- /************************************************************************
-  *			STANDARD SLCAN ENCAPSULATION			 *
-  ************************************************************************/
-
-/* Encapsulate one can_frame and stuff into a TTY queue. */
-static void slc_encaps(struct slcan *sl, struct can_frame *cf)
-{
-	int actual, idx, i;
-	char cmd;
-
-	if (cf->can_id & CAN_RTR_FLAG)
-		cmd = 'R'; /* becomes 'r' in standard frame format */
-	else
-		cmd = 'T'; /* becomes 't' in standard frame format */
-
-	if (cf->can_id & CAN_EFF_FLAG)
-		sprintf(sl->xbuff, "%c%08X%d", cmd,
-			cf->can_id & CAN_EFF_MASK, cf->can_dlc);
-	else
-		sprintf(sl->xbuff, "%c%03X%d", cmd | 0x20,
-			cf->can_id & CAN_SFF_MASK, cf->can_dlc);
-
-	idx = strlen(sl->xbuff);
-
-	for (i = 0; i < cf->can_dlc; i++)
-		sprintf(&sl->xbuff[idx + 2*i], "%02X", cf->data[i]);
-
-	strcat(sl->xbuff, "\r"); /* add terminating character */
-
-	/* Order of next two lines is *very* important.
-	 * When we are sending a little amount of data,
-	 * the transfer may be completed inside the ops->write()
-	 * routine, because it's running with interrupts enabled.
-	 * In this case we *never* got WRITE_WAKEUP event,
-	 * if we did not request it before write operation.
-	 *       14 Oct 1994  Dmitry Gorodchanin.
-	 */
-	set_bit(TTY_DO_WRITE_WAKEUP, &sl->tty->flags);
-	actual = sl->tty->ops->write(sl->tty, sl->xbuff, strlen(sl->xbuff));
-	sl->xleft = strlen(sl->xbuff) - actual;
-	sl->xhead = sl->xbuff + actual;
-	sl->dev->stats.tx_bytes += cf->can_dlc;
-}
-
-/*
- * Called by the driver when there's room for more data.  If we have
- * more packets to send, we send them here.
- */
-static void slcan_write_wakeup(struct tty_struct *tty)
-{
-	int actual;
-	struct slcan *sl = (struct slcan *) tty->disc_data;
-
-	/* First make sure we're connected. */
-	if (!sl || sl->magic != SLCAN_MAGIC || !netif_running(sl->dev))
-		return;
-
-	if (sl->xleft <= 0)  {
-		/* Now serial buffer is almost free & we can start
-		 * transmission of another packet */
-		sl->dev->stats.tx_packets++;
-		clear_bit(TTY_DO_WRITE_WAKEUP, &tty->flags);
-		netif_wake_queue(sl->dev);
-		return;
-	}
-
-	actual = tty->ops->write(tty, sl->xhead, sl->xleft);
-	sl->xleft -= actual;
-	sl->xhead += actual;
-}
-
-/* Send a can_frame to a TTY queue. */
-static netdev_tx_t slc_xmit(struct sk_buff *skb, struct net_device *dev)
-{
-	struct slcan *sl = netdev_priv(dev);
-
-	if (skb->len != sizeof(struct can_frame))
-		goto out;
-
-	spin_lock(&sl->lock);
-	if (!netif_running(dev))  {
-		spin_unlock(&sl->lock);
-		printk(KERN_WARNING "%s: xmit: iface is down\n", dev->name);
-		goto out;
-	}
-	if (sl->tty == NULL) {
-		spin_unlock(&sl->lock);
-		goto out;
-	}
-
-	netif_stop_queue(sl->dev);
-	slc_encaps(sl, (struct can_frame *) skb->data); /* encaps & send */
-	spin_unlock(&sl->lock);
-
-out:
-	kfree_skb(skb);
-	return NETDEV_TX_OK;
-}
-
-
-/******************************************
- *   Routines looking at netdevice side.
- ******************************************/
-
-/* Netdevice UP -> DOWN routine */
-static int slc_close(struct net_device *dev)
-{
-	struct slcan *sl = netdev_priv(dev);
-
-	spin_lock_bh(&sl->lock);
-	if (sl->tty) {
-		/* TTY discipline is running. */
-		clear_bit(TTY_DO_WRITE_WAKEUP, &sl->tty->flags);
-	}
-	netif_stop_queue(dev);
-	sl->rcount   = 0;
-	sl->xleft    = 0;
-	spin_unlock_bh(&sl->lock);
-
-	return 0;
-}
-
-/* Netdevice DOWN -> UP routine */
-static int slc_open(struct net_device *dev)
-{
-	struct slcan *sl = netdev_priv(dev);
-
-	if (sl->tty == NULL)
-		return -ENODEV;
-
-	sl->flags &= (1 << SLF_INUSE);
-	netif_start_queue(dev);
-	return 0;
-}
-
-/* Hook the destructor so we can free slcan devs at the right point in time */
-static void slc_free_netdev(struct net_device *dev)
-{
-	int i = dev->base_addr;
-	free_netdev(dev);
-	slcan_devs[i] = NULL;
-}
-
-static const struct net_device_ops slc_netdev_ops = {
-	.ndo_open               = slc_open,
-	.ndo_stop               = slc_close,
-	.ndo_start_xmit         = slc_xmit,
-};
-
-static void slc_setup(struct net_device *dev)
-{
-	dev->netdev_ops		= &slc_netdev_ops;
-	dev->destructor		= slc_free_netdev;
-
-	dev->hard_header_len	= 0;
-	dev->addr_len		= 0;
-	dev->tx_queue_len	= 10;
-
-	dev->mtu		= sizeof(struct can_frame);
-	dev->type		= ARPHRD_CAN;
-
-	/* New-style flags. */
-	dev->flags		= IFF_NOARP;
-	dev->features           = NETIF_F_HW_CSUM;
-}
-
-/******************************************
-  Routines looking at TTY side.
- ******************************************/
-
-/*
- * Handle the 'receiver data ready' interrupt.
- * This function is called by the 'tty_io' module in the kernel when
- * a block of SLCAN data has been received, which can now be decapsulated
- * and sent on to some IP layer for further processing. This will not
- * be re-entered while running but other ldisc functions may be called
- * in parallel
- */
-
-static void slcan_receive_buf(struct tty_struct *tty,
-			      const unsigned char *cp, char *fp, int count)
-{
-	struct slcan *sl = (struct slcan *) tty->disc_data;
-
-	if (!sl || sl->magic != SLCAN_MAGIC || !netif_running(sl->dev))
-		return;
-
-	/* Read the characters out of the buffer */
-	while (count--) {
-		if (fp && *fp++) {
-			if (!test_and_set_bit(SLF_ERROR, &sl->flags))
-				sl->dev->stats.rx_errors++;
-			cp++;
-			continue;
-		}
-		slcan_unesc(sl, *cp++);
-	}
-}
-
-/************************************
- *  slcan_open helper routines.
- ************************************/
-
-/* Collect hanged up channels */
-static void slc_sync(void)
-{
-	int i;
-	struct net_device *dev;
-	struct slcan	  *sl;
-
-	for (i = 0; i < maxdev; i++) {
-		dev = slcan_devs[i];
-		if (dev == NULL)
-			break;
-
-		sl = netdev_priv(dev);
-		if (sl->tty)
-			continue;
-		if (dev->flags & IFF_UP)
-			dev_close(dev);
-	}
-}
-
-/* Find a free SLCAN channel, and link in this `tty' line. */
-static struct slcan *slc_alloc(dev_t line)
-{
-	int i;
-	char name[IFNAMSIZ];
-	struct net_device *dev = NULL;
-	struct slcan       *sl;
-
-	for (i = 0; i < maxdev; i++) {
-		dev = slcan_devs[i];
-		if (dev == NULL)
-			break;
-
-	}
-
-	/* Sorry, too many, all slots in use */
-	if (i >= maxdev)
-		return NULL;
-
-	sprintf(name, "slcan%d", i);
-	dev = alloc_netdev(sizeof(*sl), name, slc_setup);
-	if (!dev)
-		return NULL;
-
-	dev->base_addr  = i;
-	sl = netdev_priv(dev);
-
-	/* Initialize channel control data */
-	sl->magic = SLCAN_MAGIC;
-	sl->dev	= dev;
-	spin_lock_init(&sl->lock);
-	slcan_devs[i] = dev;
-
-	return sl;
-}
-
-/*
- * Open the high-level part of the SLCAN channel.
- * This function is called by the TTY module when the
- * SLCAN line discipline is called for.  Because we are
- * sure the tty line exists, we only have to link it to
- * a free SLCAN channel...
- *
- * Called in process context serialized from other ldisc calls.
- */
-
-static int slcan_open(struct tty_struct *tty)
-{
-	struct slcan *sl;
-	int err;
-
-	if (!capable(CAP_NET_ADMIN))
-		return -EPERM;
-
-	if (tty->ops->write == NULL)
-		return -EOPNOTSUPP;
-
-	/* RTnetlink lock is misused here to serialize concurrent
-	   opens of slcan channels. There are better ways, but it is
-	   the simplest one.
-	 */
-	rtnl_lock();
-
-	/* Collect hanged up channels. */
-	slc_sync();
-
-	sl = tty->disc_data;
-
-	err = -EEXIST;
-	/* First make sure we're not already connected. */
-	if (sl && sl->magic == SLCAN_MAGIC)
-		goto err_exit;
-
-	/* OK.  Find a free SLCAN channel to use. */
-	err = -ENFILE;
-	sl = slc_alloc(tty_devnum(tty));
-	if (sl == NULL)
-		goto err_exit;
-
-	sl->tty = tty;
-	tty->disc_data = sl;
-
-	if (!test_bit(SLF_INUSE, &sl->flags)) {
-		/* Perform the low-level SLCAN initialization. */
-		sl->rcount   = 0;
-		sl->xleft    = 0;
-
-		set_bit(SLF_INUSE, &sl->flags);
-
-		err = register_netdevice(sl->dev);
-		if (err)
-			goto err_free_chan;
-	}
-
-	/* Done.  We have linked the TTY line to a channel. */
-	rtnl_unlock();
-	tty->receive_room = 65536;	/* We don't flow control */
-
-	/* TTY layer expects 0 on success */
-	return 0;
-
-err_free_chan:
-	sl->tty = NULL;
-	tty->disc_data = NULL;
-	clear_bit(SLF_INUSE, &sl->flags);
-
-err_exit:
-	rtnl_unlock();
-
-	/* Count references from TTY module */
-	return err;
-}
-
-/*
- * Close down a SLCAN channel.
- * This means flushing out any pending queues, and then returning. This
- * call is serialized against other ldisc functions.
- *
- * We also use this method for a hangup event.
- */
-
-static void slcan_close(struct tty_struct *tty)
-{
-	struct slcan *sl = (struct slcan *) tty->disc_data;
-
-	/* First make sure we're connected. */
-	if (!sl || sl->magic != SLCAN_MAGIC || sl->tty != tty)
-		return;
-
-	tty->disc_data = NULL;
-	sl->tty = NULL;
-
-	/* Flush network side */
-	unregister_netdev(sl->dev);
-	/* This will complete via sl_free_netdev */
-}
-
-static int slcan_hangup(struct tty_struct *tty)
-{
-	slcan_close(tty);
-	return 0;
-}
-
-/* Perform I/O control on an active SLCAN channel. */
-static int slcan_ioctl(struct tty_struct *tty, struct file *file,
-		       unsigned int cmd, unsigned long arg)
-{
-	struct slcan *sl = (struct slcan *) tty->disc_data;
-	unsigned int tmp;
-
-	/* First make sure we're connected. */
-	if (!sl || sl->magic != SLCAN_MAGIC)
-		return -EINVAL;
-
-	switch (cmd) {
-	case SIOCGIFNAME:
-		tmp = strlen(sl->dev->name) + 1;
-		if (copy_to_user((void __user *)arg, sl->dev->name, tmp))
-			return -EFAULT;
-		return 0;
-
-	case SIOCSIFHWADDR:
-		return -EINVAL;
-
-	default:
-		return tty_mode_ioctl(tty, file, cmd, arg);
-	}
-}
-
-static struct tty_ldisc_ops slc_ldisc = {
-	.owner		= THIS_MODULE,
-	.magic		= TTY_LDISC_MAGIC,
-	.name		= "slcan",
-	.open		= slcan_open,
-	.close		= slcan_close,
-	.hangup		= slcan_hangup,
-	.ioctl		= slcan_ioctl,
-	.receive_buf	= slcan_receive_buf,
-	.write_wakeup	= slcan_write_wakeup,
-};
-
-static int __init slcan_init(void)
-{
-	int status;
-
-	if (maxdev < 4)
-		maxdev = 4; /* Sanity */
-
-	printk(banner);
-	printk(KERN_INFO "slcan: %d dynamic interface channels.\n", maxdev);
-
-	slcan_devs = kzalloc(sizeof(struct net_device *)*maxdev, GFP_KERNEL);
-	if (!slcan_devs)
-		return -ENOMEM;
-
-	/* Fill in our line protocol discipline, and register it */
-	status = tty_register_ldisc(N_SLCAN, &slc_ldisc);
-	if (status)  {
-		printk(KERN_ERR "slcan: can't register line discipline\n");
-		kfree(slcan_devs);
-	}
-	return status;
-}
-
-static void __exit slcan_exit(void)
-{
-	int i;
-	struct net_device *dev;
-	struct slcan *sl;
-	unsigned long timeout = jiffies + HZ;
-	int busy = 0;
-
-	if (slcan_devs == NULL)
-		return;
-
-	/* First of all: check for active disciplines and hangup them.
-	 */
-	do {
-		if (busy)
-			msleep_interruptible(100);
-
-		busy = 0;
-		for (i = 0; i < maxdev; i++) {
-			dev = slcan_devs[i];
-			if (!dev)
-				continue;
-			sl = netdev_priv(dev);
-			spin_lock_bh(&sl->lock);
-			if (sl->tty) {
-				busy++;
-				tty_hangup(sl->tty);
-			}
-			spin_unlock_bh(&sl->lock);
-		}
-	} while (busy && time_before(jiffies, timeout));
-
-	/* FIXME: hangup is async so we should wait when doing this second
-	   phase */
-
-	for (i = 0; i < maxdev; i++) {
-		dev = slcan_devs[i];
-		if (!dev)
-			continue;
-		slcan_devs[i] = NULL;
-
-		sl = netdev_priv(dev);
-		if (sl->tty) {
-			printk(KERN_ERR "%s: tty discipline still running\n",
-			       dev->name);
-			/* Intentionally leak the control block. */
-			dev->destructor = NULL;
-		}
-
-		unregister_netdev(dev);
-	}
-
-	kfree(slcan_devs);
-	slcan_devs = NULL;
-
-	i = tty_unregister_ldisc(N_SLCAN);
-	if (i)
-		printk(KERN_ERR "slcan: can't unregister ldisc (err %d)\n", i);
-}
-
-module_init(slcan_init);
-module_exit(slcan_exit);