Merge branch 'master' into upstream

Conflicts:

	drivers/scsi/libata-core.c
	drivers/scsi/libata-scsi.c
	include/linux/pci_ids.h

1 files changed, 0 insertions, 1259 deletions

diff --git a/drivers/s390/net/ctctty.c b/drivers/s390/net/ctctty.c
deleted file mode 100644
index af54d1de07b..00000000000
--- a/drivers/s390/net/ctctty.c
+++ /dev/null
@@ -1,1259 +0,0 @@
-/*
- * CTC / ESCON network driver, tty interface.
- *
- * Copyright (C) 2001 IBM Deutschland Entwicklung GmbH, IBM Corporation
- * Author(s): Fritz Elfert (elfert@de.ibm.com, felfert@millenux.com)
- *
- * 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, 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., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- */
-
-#include <linux/config.h>
-#include <linux/module.h>
-#include <linux/tty.h>
-#include <linux/tty_flip.h>
-#include <linux/serial_reg.h>
-#include <linux/interrupt.h>
-#include <linux/delay.h>
-#include <asm/uaccess.h>
-#include <linux/devfs_fs_kernel.h>
-#include "ctctty.h"
-#include "ctcdbug.h"
-
-#define CTC_TTY_MAJOR       43
-#define CTC_TTY_MAX_DEVICES 64
-
-#define CTC_ASYNC_MAGIC          0x49344C01 /* for paranoia-checking        */
-#define CTC_ASYNC_INITIALIZED    0x80000000 /* port was initialized         */
-#define CTC_ASYNC_NORMAL_ACTIVE  0x20000000 /* Normal device active         */
-#define CTC_ASYNC_CLOSING        0x08000000 /* Serial port is closing       */
-#define CTC_ASYNC_CTS_FLOW       0x04000000 /* Do CTS flow control          */
-#define CTC_ASYNC_CHECK_CD       0x02000000 /* i.e., CLOCAL                 */
-#define CTC_ASYNC_HUP_NOTIFY         0x0001 /* Notify tty on hangups/closes */
-#define CTC_ASYNC_NETDEV_OPEN        0x0002 /* Underlying netdev is open    */
-#define CTC_ASYNC_TX_LINESTAT        0x0004 /* Must send line status        */
-#define CTC_ASYNC_SPLIT_TERMIOS      0x0008 /* Sep. termios for dialin/out  */
-#define CTC_TTY_XMIT_SIZE              1024 /* Default bufsize for write    */
-#define CTC_SERIAL_XMIT_MAX            4000 /* Maximum bufsize for write    */
-
-/* Private data (similar to async_struct in <linux/serial.h>) */
-typedef struct {
-  int			magic;
-  int			flags;		 /* defined in tty.h               */
-  int			mcr;		 /* Modem control register         */
-  int                   msr;             /* Modem status register          */
-  int                   lsr;             /* Line status register           */
-  int			line;
-  int			count;		 /* # of fd on device              */
-  int			blocked_open;	 /* # of blocked opens             */
-  struct net_device     *netdev;
-  struct sk_buff_head   tx_queue;        /* transmit queue                 */
-  struct sk_buff_head   rx_queue;        /* receive queue                  */
-  struct tty_struct 	*tty;            /* Pointer to corresponding tty   */
-  wait_queue_head_t	open_wait;
-  wait_queue_head_t	close_wait;
-  struct semaphore      write_sem;
-  struct tasklet_struct tasklet;
-  struct timer_list     stoptimer;
-} ctc_tty_info;
-
-/* Description of one CTC-tty */
-typedef struct {
-  struct tty_driver  *ctc_tty_device;		   /* tty-device             */
-  ctc_tty_info       info[CTC_TTY_MAX_DEVICES];	   /* Private data           */
-} ctc_tty_driver;
-
-static ctc_tty_driver *driver;
-
-/* Leave this unchanged unless you know what you do! */
-#define MODEM_PARANOIA_CHECK
-#define MODEM_DO_RESTART
-
-#define CTC_TTY_NAME "ctctty"
-
-static __u32 ctc_tty_magic = CTC_ASYNC_MAGIC;
-static int ctc_tty_shuttingdown = 0;
-
-static spinlock_t ctc_tty_lock;
-
-/* ctc_tty_try_read() is called from within ctc_tty_rcv_skb()
- * to stuff incoming data directly into a tty's flip-buffer. If the
- * flip buffer is full, the packet gets queued up.
- *
- * Return:
- *  1 = Success
- *  0 = Failure, data has to be buffered and later processed by
- *      ctc_tty_readmodem().
- */
-static int
-ctc_tty_try_read(ctc_tty_info * info, struct sk_buff *skb)
-{
-	int len;
-	struct tty_struct *tty;
-
-	DBF_TEXT(trace, 5, __FUNCTION__);
-	if ((tty = info->tty)) {
-		if (info->mcr & UART_MCR_RTS) {
-			len = skb->len;
-			tty_insert_flip_string(tty, skb->data, len);
-			tty_flip_buffer_push(tty);
-			kfree_skb(skb);
-			return 1;
-		}
-	}
-	return 0;
-}
-
-/* ctc_tty_readmodem() is called periodically from within timer-interrupt.
- * It tries getting received data from the receive queue an stuff it into
- * the tty's flip-buffer.
- */
-static int
-ctc_tty_readmodem(ctc_tty_info *info)
-{
-	int ret = 1;
-	struct tty_struct *tty;
-
-	DBF_TEXT(trace, 5, __FUNCTION__);
-	if ((tty = info->tty)) {
-		if (info->mcr & UART_MCR_RTS) {
-			struct sk_buff *skb;
-
-			if ((skb = skb_dequeue(&info->rx_queue))) {
-				int len = skb->len;
-				tty_insert_flip_string(tty, skb->data, len);
-				skb_pull(skb, len);
-				tty_flip_buffer_push(tty);
-				if (skb->len > 0)
-					skb_queue_head(&info->rx_queue, skb);
-				else {
-					kfree_skb(skb);
-					ret = !skb_queue_empty(&info->rx_queue);
-				}
-			}
-		}
-	}
-	return ret;
-}
-
-void
-ctc_tty_setcarrier(struct net_device *netdev, int on)
-{
-	int i;
-
-	DBF_TEXT(trace, 4, __FUNCTION__);
-	if ((!driver) || ctc_tty_shuttingdown)
-		return;
-	for (i = 0; i < CTC_TTY_MAX_DEVICES; i++)
-		if (driver->info[i].netdev == netdev) {
-			ctc_tty_info *info = &driver->info[i];
-			if (on)
-				info->msr |= UART_MSR_DCD;
-			else
-				info->msr &= ~UART_MSR_DCD;
-			if ((info->flags & CTC_ASYNC_CHECK_CD) && (!on))
-				tty_hangup(info->tty);
-		}
-}
-
-void
-ctc_tty_netif_rx(struct sk_buff *skb)
-{
-	int i;
-	ctc_tty_info *info = NULL;
-
-	DBF_TEXT(trace, 5, __FUNCTION__);
-	if (!skb)
-		return;
-	if ((!skb->dev) || (!driver) || ctc_tty_shuttingdown) {
-		dev_kfree_skb(skb);
-		return;
-	}
-	for (i = 0; i < CTC_TTY_MAX_DEVICES; i++)
-		if (driver->info[i].netdev == skb->dev) {
-			info = &driver->info[i];
-			break;
-		}
-	if (!info) {
-		dev_kfree_skb(skb);
-		return;
-	}
-	if (skb->len < 6) {
-		dev_kfree_skb(skb);
-		return;
-	}
-	if (memcmp(skb->data, &ctc_tty_magic, sizeof(__u32))) {
-		dev_kfree_skb(skb);
-		return;
-	}
-	skb_pull(skb, sizeof(__u32));
-
-	i = *((int *)skb->data);
-	skb_pull(skb, sizeof(info->mcr));
-	if (i & UART_MCR_RTS) {
-		info->msr |= UART_MSR_CTS;
-		if (info->flags & CTC_ASYNC_CTS_FLOW)
-			info->tty->hw_stopped = 0;
-	} else {
-		info->msr &= ~UART_MSR_CTS;
-		if (info->flags & CTC_ASYNC_CTS_FLOW)
-			info->tty->hw_stopped = 1;
-	}
-	if (i & UART_MCR_DTR)
-		info->msr |= UART_MSR_DSR;
-	else
-		info->msr &= ~UART_MSR_DSR;
-	if (skb->len <= 0) {
-		kfree_skb(skb);
-		return;
-	}
-	/* Try to deliver directly via tty-flip-buf if queue is empty */
-	if (skb_queue_empty(&info->rx_queue))
-		if (ctc_tty_try_read(info, skb))
-			return;
-	/* Direct deliver failed or queue wasn't empty.
-	 * Queue up for later dequeueing via timer-irq.
-	 */
-	skb_queue_tail(&info->rx_queue, skb);
-	/* Schedule dequeuing */
-	tasklet_schedule(&info->tasklet);
-}
-
-static int
-ctc_tty_tint(ctc_tty_info * info)
-{
-	struct sk_buff *skb = skb_dequeue(&info->tx_queue);
-	int stopped = (info->tty->hw_stopped || info->tty->stopped);
-	int wake = 1;
-	int rc;
-
-	DBF_TEXT(trace, 4, __FUNCTION__);
-	if (!info->netdev) {
-		if (skb)
-			kfree_skb(skb);
-		return 0;
-	}
-	if (info->flags & CTC_ASYNC_TX_LINESTAT) {
-		int skb_res = info->netdev->hard_header_len +
-			sizeof(info->mcr) + sizeof(__u32);
-		/* If we must update line status,
-		 * create an empty dummy skb and insert it.
-		 */
-		if (skb)
-			skb_queue_head(&info->tx_queue, skb);
-
-		skb = dev_alloc_skb(skb_res);
-		if (!skb) {
-			printk(KERN_WARNING
-			       "ctc_tty: Out of memory in %s%d tint\n",
-			       CTC_TTY_NAME, info->line);
-			return 1;
-		}
-		skb_reserve(skb, skb_res);
-		stopped = 0;
-		wake = 0;
-	}
-	if (!skb)
-		return 0;
-	if (stopped) {
-		skb_queue_head(&info->tx_queue, skb);
-		return 1;
-	}
-#if 0
-	if (skb->len > 0)
-		printk(KERN_DEBUG "tint: %d %02x\n", skb->len, *(skb->data));
-	else
-		printk(KERN_DEBUG "tint: %d STAT\n", skb->len);
-#endif
-	memcpy(skb_push(skb, sizeof(info->mcr)), &info->mcr, sizeof(info->mcr));
-	memcpy(skb_push(skb, sizeof(__u32)), &ctc_tty_magic, sizeof(__u32));
-	rc = info->netdev->hard_start_xmit(skb, info->netdev);
-	if (rc) {
-		skb_pull(skb, sizeof(info->mcr) + sizeof(__u32));
-		if (skb->len > 0)
-			skb_queue_head(&info->tx_queue, skb);
-		else
-			kfree_skb(skb);
-	} else {
-		struct tty_struct *tty = info->tty;
-
-		info->flags &= ~CTC_ASYNC_TX_LINESTAT;
-		if (tty) {
-			tty_wakeup(tty);
-		}
-	}
-	return (skb_queue_empty(&info->tx_queue) ? 0 : 1);
-}
-
-/************************************************************
- *
- * Modem-functions
- *
- * mostly "stolen" from original Linux-serial.c and friends.
- *
- ************************************************************/
-
-static inline int
-ctc_tty_paranoia_check(ctc_tty_info * info, char *name, const char *routine)
-{
-#ifdef MODEM_PARANOIA_CHECK
-	if (!info) {
-		printk(KERN_WARNING "ctc_tty: null info_struct for %s in %s\n",
-		       name, routine);
-		return 1;
-	}
-	if (info->magic != CTC_ASYNC_MAGIC) {
-		printk(KERN_WARNING "ctc_tty: bad magic for info struct %s in %s\n",
-		       name, routine);
-		return 1;
-	}
-#endif
-	return 0;
-}
-
-static void
-ctc_tty_inject(ctc_tty_info *info, char c)
-{
-	int skb_res;
-	struct sk_buff *skb;
-
-	DBF_TEXT(trace, 4, __FUNCTION__);
-	if (ctc_tty_shuttingdown)
-		return;
-	skb_res = info->netdev->hard_header_len + sizeof(info->mcr) +
-		sizeof(__u32) + 1;
-	skb = dev_alloc_skb(skb_res);
-	if (!skb) {
-		printk(KERN_WARNING
-		       "ctc_tty: Out of memory in %s%d tx_inject\n",
-		       CTC_TTY_NAME, info->line);
-		return;
-	}
-	skb_reserve(skb, skb_res);
-	*(skb_put(skb, 1)) = c;
-	skb_queue_head(&info->tx_queue, skb);
-	tasklet_schedule(&info->tasklet);
-}
-
-static void
-ctc_tty_transmit_status(ctc_tty_info *info)
-{
-	DBF_TEXT(trace, 5, __FUNCTION__);
-	if (ctc_tty_shuttingdown)
-		return;
-	info->flags |= CTC_ASYNC_TX_LINESTAT;
-	tasklet_schedule(&info->tasklet);
-}
-
-static void
-ctc_tty_change_speed(ctc_tty_info * info)
-{
-	unsigned int cflag;
-	unsigned int quot;
-	int i;
-
-	DBF_TEXT(trace, 3, __FUNCTION__);
-	if (!info->tty || !info->tty->termios)
-		return;
-	cflag = info->tty->termios->c_cflag;
-
-	quot = i = cflag & CBAUD;
-	if (i & CBAUDEX) {
-		i &= ~CBAUDEX;
-		if (i < 1 || i > 2)
-			info->tty->termios->c_cflag &= ~CBAUDEX;
-		else
-			i += 15;
-	}
-	if (quot) {
-		info->mcr |= UART_MCR_DTR;
-		info->mcr |= UART_MCR_RTS;
-		ctc_tty_transmit_status(info);
-	} else {
-		info->mcr &= ~UART_MCR_DTR;
-		info->mcr &= ~UART_MCR_RTS;
-		ctc_tty_transmit_status(info);
-		return;
-	}
-
-	/* CTS flow control flag and modem status interrupts */
-	if (cflag & CRTSCTS) {
-		info->flags |= CTC_ASYNC_CTS_FLOW;
-	} else
-		info->flags &= ~CTC_ASYNC_CTS_FLOW;
-	if (cflag & CLOCAL)
-		info->flags &= ~CTC_ASYNC_CHECK_CD;
-	else {
-		info->flags |= CTC_ASYNC_CHECK_CD;
-	}
-}
-
-static int
-ctc_tty_startup(ctc_tty_info * info)
-{
-	DBF_TEXT(trace, 3, __FUNCTION__);
-	if (info->flags & CTC_ASYNC_INITIALIZED)
-		return 0;
-#ifdef CTC_DEBUG_MODEM_OPEN
-	printk(KERN_DEBUG "starting up %s%d ...\n", CTC_TTY_NAME, info->line);
-#endif
-	/*
-	 * Now, initialize the UART
-	 */
-	info->mcr = UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2;
-	if (info->tty)
-		clear_bit(TTY_IO_ERROR, &info->tty->flags);
-	/*
-	 * and set the speed of the serial port
-	 */
-	ctc_tty_change_speed(info);
-
-	info->flags |= CTC_ASYNC_INITIALIZED;
-	if (!(info->flags & CTC_ASYNC_NETDEV_OPEN))
-		info->netdev->open(info->netdev);
-	info->flags |= CTC_ASYNC_NETDEV_OPEN;
-	return 0;
-}
-
-static void
-ctc_tty_stopdev(unsigned long data)
-{
-	ctc_tty_info *info = (ctc_tty_info *)data;
-
-	if ((!info) || (!info->netdev) ||
-	    (info->flags & CTC_ASYNC_INITIALIZED))
-		return;
-	info->netdev->stop(info->netdev);
-	info->flags &= ~CTC_ASYNC_NETDEV_OPEN;
-}
-
-/*
- * This routine will shutdown a serial port; interrupts are disabled, and
- * DTR is dropped if the hangup on close termio flag is on.
- */
-static void
-ctc_tty_shutdown(ctc_tty_info * info)
-{
-	DBF_TEXT(trace, 3, __FUNCTION__);
-	if (!(info->flags & CTC_ASYNC_INITIALIZED))
-		return;
-#ifdef CTC_DEBUG_MODEM_OPEN
-	printk(KERN_DEBUG "Shutting down %s%d ....\n", CTC_TTY_NAME, info->line);
-#endif
-	info->msr &= ~UART_MSR_RI;
-	if (!info->tty || (info->tty->termios->c_cflag & HUPCL))
-		info->mcr &= ~(UART_MCR_DTR | UART_MCR_RTS);
-	if (info->tty)
-		set_bit(TTY_IO_ERROR, &info->tty->flags);
-	mod_timer(&info->stoptimer, jiffies + (10 * HZ));
-	skb_queue_purge(&info->tx_queue);
-	skb_queue_purge(&info->rx_queue);
-	info->flags &= ~CTC_ASYNC_INITIALIZED;
-}
-
-/* ctc_tty_write() is the main send-routine. It is called from the upper
- * levels within the kernel to perform sending data. Depending on the
- * online-flag it either directs output to the at-command-interpreter or
- * to the lower level. Additional tasks done here:
- *  - If online, check for escape-sequence (+++)
- *  - If sending audio-data, call ctc_tty_DLEdown() to parse DLE-codes.
- *  - If receiving audio-data, call ctc_tty_end_vrx() to abort if needed.
- *  - If dialing, abort dial.
- */
-static int
-ctc_tty_write(struct tty_struct *tty, const u_char * buf, int count)
-{
-	int c;
-	int total = 0;
-	ctc_tty_info *info = (ctc_tty_info *) tty->driver_data;
-
-	DBF_TEXT(trace, 5, __FUNCTION__);
-	if (ctc_tty_shuttingdown)
-		goto ex;
-	if (ctc_tty_paranoia_check(info, tty->name, "ctc_tty_write"))
-		goto ex;
-	if (!tty)
-		goto ex;
-	if (!info->netdev) {
-		total = -ENODEV;
-		goto ex;
-	}
-	while (1) {
-		struct sk_buff *skb;
-		int skb_res;
-
-		c = (count < CTC_TTY_XMIT_SIZE) ? count : CTC_TTY_XMIT_SIZE;
-		if (c <= 0)
-			break;
-
-		skb_res = info->netdev->hard_header_len + sizeof(info->mcr) +
-			+ sizeof(__u32);
-		skb = dev_alloc_skb(skb_res + c);
-		if (!skb) {
-			printk(KERN_WARNING
-			       "ctc_tty: Out of memory in %s%d write\n",
-			       CTC_TTY_NAME, info->line);
-			break;
-		}
-		skb_reserve(skb, skb_res);
-		memcpy(skb_put(skb, c), buf, c);
-		skb_queue_tail(&info->tx_queue, skb);
-		buf += c;
-		total += c;
-		count -= c;
-	}
-	if (!skb_queue_empty(&info->tx_queue)) {
-		info->lsr &= ~UART_LSR_TEMT;
-		tasklet_schedule(&info->tasklet);
-	}
-ex:
-	DBF_TEXT(trace, 6, __FUNCTION__);
-	return total;
-}
-
-static int
-ctc_tty_write_room(struct tty_struct *tty)
-{
-	ctc_tty_info *info = (ctc_tty_info *) tty->driver_data;
-
-	if (ctc_tty_paranoia_check(info, tty->name, "ctc_tty_write_room"))
-		return 0;
-	return CTC_TTY_XMIT_SIZE;
-}
-
-static int
-ctc_tty_chars_in_buffer(struct tty_struct *tty)
-{
-	ctc_tty_info *info = (ctc_tty_info *) tty->driver_data;
-
-	if (ctc_tty_paranoia_check(info, tty->name, "ctc_tty_chars_in_buffer"))
-		return 0;
-	return 0;
-}
-
-static void
-ctc_tty_flush_buffer(struct tty_struct *tty)
-{
-	ctc_tty_info *info;
-	unsigned long flags;
-
-	DBF_TEXT(trace, 4, __FUNCTION__);
-	if (!tty)
-		goto ex;
-	spin_lock_irqsave(&ctc_tty_lock, flags);
-	info = (ctc_tty_info *) tty->driver_data;
-	if (ctc_tty_paranoia_check(info, tty->name, "ctc_tty_flush_buffer")) {
-		spin_unlock_irqrestore(&ctc_tty_lock, flags);
-		goto ex;
-	}
-	skb_queue_purge(&info->tx_queue);
-	info->lsr |= UART_LSR_TEMT;
-	spin_unlock_irqrestore(&ctc_tty_lock, flags);
-	wake_up_interruptible(&tty->write_wait);
-	tty_wakeup(tty);
-ex:
-	DBF_TEXT_(trace, 2, "ex: %s ", __FUNCTION__);
-	return;
-}
-
-static void
-ctc_tty_flush_chars(struct tty_struct *tty)
-{
-	ctc_tty_info *info = (ctc_tty_info *) tty->driver_data;
-
-	DBF_TEXT(trace, 4, __FUNCTION__);
-	if (ctc_tty_shuttingdown)
-		return;
-	if (ctc_tty_paranoia_check(info, tty->name, "ctc_tty_flush_chars"))
-		return;
-	if (tty->stopped || tty->hw_stopped || skb_queue_empty(&info->tx_queue))
-		return;
-	tasklet_schedule(&info->tasklet);
-}
-
-/*
- * ------------------------------------------------------------
- * ctc_tty_throttle()
- *
- * This routine is called by the upper-layer tty layer to signal that
- * incoming characters should be throttled.
- * ------------------------------------------------------------
- */
-static void
-ctc_tty_throttle(struct tty_struct *tty)
-{
-	ctc_tty_info *info = (ctc_tty_info *) tty->driver_data;
-
-	DBF_TEXT(trace, 4, __FUNCTION__);
-	if (ctc_tty_paranoia_check(info, tty->name, "ctc_tty_throttle"))
-		return;
-	info->mcr &= ~UART_MCR_RTS;
-	if (I_IXOFF(tty))
-		ctc_tty_inject(info, STOP_CHAR(tty));
-	ctc_tty_transmit_status(info);
-}
-
-static void
-ctc_tty_unthrottle(struct tty_struct *tty)
-{
-	ctc_tty_info *info = (ctc_tty_info *) tty->driver_data;
-
-	DBF_TEXT(trace, 4, __FUNCTION__);
-	if (ctc_tty_paranoia_check(info, tty->name, "ctc_tty_unthrottle"))
-		return;
-	info->mcr |= UART_MCR_RTS;
-	if (I_IXOFF(tty))
-		ctc_tty_inject(info, START_CHAR(tty));
-	ctc_tty_transmit_status(info);
-}
-
-/*
- * ------------------------------------------------------------
- * ctc_tty_ioctl() and friends
- * ------------------------------------------------------------
- */
-
-/*
- * ctc_tty_get_lsr_info - get line status register info
- *
- * Purpose: Let user call ioctl() to get info when the UART physically
- *          is emptied.  On bus types like RS485, the transmitter must
- *          release the bus after transmitting. This must be done when
- *          the transmit shift register is empty, not be done when the
- *          transmit holding register is empty.  This functionality
- *          allows RS485 driver to be written in user space.
- */
-static int
-ctc_tty_get_lsr_info(ctc_tty_info * info, uint __user *value)
-{
-	u_char status;
-	uint result;
-	ulong flags;
-
-	DBF_TEXT(trace, 4, __FUNCTION__);
-	spin_lock_irqsave(&ctc_tty_lock, flags);
-	status = info->lsr;
-	spin_unlock_irqrestore(&ctc_tty_lock, flags);
-	result = ((status & UART_LSR_TEMT) ? TIOCSER_TEMT : 0);
-	put_user(result, value);
-	return 0;
-}
-
-
-static int ctc_tty_tiocmget(struct tty_struct *tty, struct file *file)
-{
-	ctc_tty_info *info = (ctc_tty_info *) tty->driver_data;
-	u_char control,
-	 status;
-	uint result;
-	ulong flags;
-
-	DBF_TEXT(trace, 4, __FUNCTION__);
-	if (ctc_tty_paranoia_check(info, tty->name, "ctc_tty_ioctl"))
-		return -ENODEV;
-	if (tty->flags & (1 << TTY_IO_ERROR))
-		return -EIO;
-
-	control = info->mcr;
-	spin_lock_irqsave(&ctc_tty_lock, flags);
-	status = info->msr;
-	spin_unlock_irqrestore(&ctc_tty_lock, flags);
-	result = ((control & UART_MCR_RTS) ? TIOCM_RTS : 0)
-	    | ((control & UART_MCR_DTR) ? TIOCM_DTR : 0)
-	    | ((status & UART_MSR_DCD) ? TIOCM_CAR : 0)
-	    | ((status & UART_MSR_RI) ? TIOCM_RNG : 0)
-	    | ((status & UART_MSR_DSR) ? TIOCM_DSR : 0)
-	    | ((status & UART_MSR_CTS) ? TIOCM_CTS : 0);
-	return result;
-}
-
-static int
-ctc_tty_tiocmset(struct tty_struct *tty, struct file *file,
-		 unsigned int set, unsigned int clear)
-{
-	ctc_tty_info *info = (ctc_tty_info *) tty->driver_data;
-
-	DBF_TEXT(trace, 4, __FUNCTION__);
-	if (ctc_tty_paranoia_check(info, tty->name, "ctc_tty_ioctl"))
-		return -ENODEV;
-	if (tty->flags & (1 << TTY_IO_ERROR))
-		return -EIO;
-
-	if (set & TIOCM_RTS)
-		info->mcr |= UART_MCR_RTS;
-	if (set & TIOCM_DTR)
-		info->mcr |= UART_MCR_DTR;
-
-	if (clear & TIOCM_RTS)
-		info->mcr &= ~UART_MCR_RTS;
-	if (clear & TIOCM_DTR)
-		info->mcr &= ~UART_MCR_DTR;
-
-	if ((set | clear) & (TIOCM_RTS|TIOCM_DTR))
-		ctc_tty_transmit_status(info);
-	return 0;
-}
-
-static int
-ctc_tty_ioctl(struct tty_struct *tty, struct file *file,
-	       uint cmd, ulong arg)
-{
-	ctc_tty_info *info = (ctc_tty_info *) tty->driver_data;
-	int error;
-	int retval;
-
-	DBF_TEXT(trace, 4, __FUNCTION__);
-	if (ctc_tty_paranoia_check(info, tty->name, "ctc_tty_ioctl"))
-		return -ENODEV;
-	if (tty->flags & (1 << TTY_IO_ERROR))
-		return -EIO;
-	switch (cmd) {
-		case TCSBRK:   /* SVID version: non-zero arg --> no break */
-#ifdef CTC_DEBUG_MODEM_IOCTL
-			printk(KERN_DEBUG "%s%d ioctl TCSBRK\n", CTC_TTY_NAME, info->line);
-#endif
-			retval = tty_check_change(tty);
-			if (retval)
-				return retval;
-			tty_wait_until_sent(tty, 0);
-			return 0;
-		case TCSBRKP:  /* support for POSIX tcsendbreak() */
-#ifdef CTC_DEBUG_MODEM_IOCTL
-			printk(KERN_DEBUG "%s%d ioctl TCSBRKP\n", CTC_TTY_NAME, info->line);
-#endif
-			retval = tty_check_change(tty);
-			if (retval)
-				return retval;
-			tty_wait_until_sent(tty, 0);
-			return 0;
-		case TIOCGSOFTCAR:
-#ifdef CTC_DEBUG_MODEM_IOCTL
-			printk(KERN_DEBUG "%s%d ioctl TIOCGSOFTCAR\n", CTC_TTY_NAME,
-			       info->line);
-#endif
-			error = put_user(C_CLOCAL(tty) ? 1 : 0, (ulong __user *) arg);
-			return error;
-		case TIOCSSOFTCAR:
-#ifdef CTC_DEBUG_MODEM_IOCTL
-			printk(KERN_DEBUG "%s%d ioctl TIOCSSOFTCAR\n", CTC_TTY_NAME,
-			       info->line);
-#endif
-			error = get_user(arg, (ulong __user *) arg);
-			if (error)
-				return error;
-			tty->termios->c_cflag =
-			    ((tty->termios->c_cflag & ~CLOCAL) |
-			     (arg ? CLOCAL : 0));
-			return 0;
-		case TIOCSERGETLSR:	/* Get line status register */
-#ifdef CTC_DEBUG_MODEM_IOCTL
-			printk(KERN_DEBUG "%s%d ioctl TIOCSERGETLSR\n", CTC_TTY_NAME,
-			       info->line);
-#endif
-			if (access_ok(VERIFY_WRITE, (void __user *) arg, sizeof(uint)))
-				return ctc_tty_get_lsr_info(info, (uint __user *) arg);
-			else
-				return -EFAULT;
-		default:
-#ifdef CTC_DEBUG_MODEM_IOCTL
-			printk(KERN_DEBUG "UNKNOWN ioctl 0x%08x on %s%d\n", cmd,
-			       CTC_TTY_NAME, info->line);
-#endif
-			return -ENOIOCTLCMD;
-	}
-	return 0;
-}
-
-static void
-ctc_tty_set_termios(struct tty_struct *tty, struct termios *old_termios)
-{
-	ctc_tty_info *info = (ctc_tty_info *) tty->driver_data;
-	unsigned int cflag = tty->termios->c_cflag;
-
-	DBF_TEXT(trace, 4, __FUNCTION__);
-	ctc_tty_change_speed(info);
-
-	/* Handle transition to B0 */
-	if ((old_termios->c_cflag & CBAUD) && !(cflag & CBAUD)) {
-		info->mcr &= ~(UART_MCR_DTR|UART_MCR_RTS);
-		ctc_tty_transmit_status(info);
-	}
-
-	/* Handle transition from B0 to other */
-	if (!(old_termios->c_cflag & CBAUD) && (cflag & CBAUD)) {
-		info->mcr |= UART_MCR_DTR;
-		if (!(tty->termios->c_cflag & CRTSCTS) ||
-                    !test_bit(TTY_THROTTLED, &tty->flags)) {
-                        info->mcr |= UART_MCR_RTS;
-                }
-		ctc_tty_transmit_status(info);
-	}
-
-	/* Handle turning off CRTSCTS */
-	if ((old_termios->c_cflag & CRTSCTS) &&
-            !(tty->termios->c_cflag & CRTSCTS))
-                tty->hw_stopped = 0;
-}
-
-/*
- * ------------------------------------------------------------
- * ctc_tty_open() and friends
- * ------------------------------------------------------------
- */
-static int
-ctc_tty_block_til_ready(struct tty_struct *tty, struct file *filp, ctc_tty_info *info)
-{
-	DECLARE_WAITQUEUE(wait, NULL);
-	int do_clocal = 0;
-	unsigned long flags;
-	int retval;
-
-	DBF_TEXT(trace, 4, __FUNCTION__);
-	/*
-	 * If the device is in the middle of being closed, then block
-	 * until it's done, and then try again.
-	 */
-	if (tty_hung_up_p(filp) ||
-	    (info->flags & CTC_ASYNC_CLOSING)) {
-		if (info->flags & CTC_ASYNC_CLOSING)
-			wait_event(info->close_wait,
-				   !(info->flags & CTC_ASYNC_CLOSING));
-#ifdef MODEM_DO_RESTART
-		if (info->flags & CTC_ASYNC_HUP_NOTIFY)
-			return -EAGAIN;
-		else
-			return -ERESTARTSYS;
-#else
-		return -EAGAIN;
-#endif
-	}
-	/*
-	 * If non-blocking mode is set, then make the check up front
-	 * and then exit.
-	 */
-	if ((filp->f_flags & O_NONBLOCK) ||
-	    (tty->flags & (1 << TTY_IO_ERROR))) {
-		info->flags |= CTC_ASYNC_NORMAL_ACTIVE;
-		return 0;
-	}
-	if (tty->termios->c_cflag & CLOCAL)
-		do_clocal = 1;
-	/*
-	 * Block waiting for the carrier detect and the line to become
-	 * free (i.e., not in use by the callout).  While we are in
-	 * this loop, info->count is dropped by one, so that
-	 * ctc_tty_close() knows when to free things.  We restore it upon
-	 * exit, either normal or abnormal.
-	 */
-	retval = 0;
-	add_wait_queue(&info->open_wait, &wait);
-#ifdef CTC_DEBUG_MODEM_OPEN
-	printk(KERN_DEBUG "ctc_tty_block_til_ready before block: %s%d, count = %d\n",
-	       CTC_TTY_NAME, info->line, info->count);
-#endif
-	spin_lock_irqsave(&ctc_tty_lock, flags);
-	if (!(tty_hung_up_p(filp)))
-		info->count--;
-	spin_unlock_irqrestore(&ctc_tty_lock, flags);
-	info->blocked_open++;
-	while (1) {
-		set_current_state(TASK_INTERRUPTIBLE);
-		if (tty_hung_up_p(filp) ||
-		    !(info->flags & CTC_ASYNC_INITIALIZED)) {
-#ifdef MODEM_DO_RESTART
-			if (info->flags & CTC_ASYNC_HUP_NOTIFY)
-				retval = -EAGAIN;
-			else
-				retval = -ERESTARTSYS;
-#else
-			retval = -EAGAIN;
-#endif
-			break;
-		}
-		if (!(info->flags & CTC_ASYNC_CLOSING) &&
-		    (do_clocal || (info->msr & UART_MSR_DCD))) {
-			break;
-		}
-		if (signal_pending(current)) {
-			retval = -ERESTARTSYS;
-			break;
-		}
-#ifdef CTC_DEBUG_MODEM_OPEN
-		printk(KERN_DEBUG "ctc_tty_block_til_ready blocking: %s%d, count = %d\n",
-		       CTC_TTY_NAME, info->line, info->count);
-#endif
-		schedule();
-	}
-	current->state = TASK_RUNNING;
-	remove_wait_queue(&info->open_wait, &wait);
-	if (!tty_hung_up_p(filp))
-		info->count++;
-	info->blocked_open--;
-#ifdef CTC_DEBUG_MODEM_OPEN
-	printk(KERN_DEBUG "ctc_tty_block_til_ready after blocking: %s%d, count = %d\n",
-	       CTC_TTY_NAME, info->line, info->count);
-#endif
-	if (retval)
-		return retval;
-	info->flags |= CTC_ASYNC_NORMAL_ACTIVE;
-	return 0;
-}
-
-/*
- * This routine is called whenever a serial port is opened.  It
- * enables interrupts for a serial port, linking in its async structure into
- * the IRQ chain.   It also performs the serial-specific
- * initialization for the tty structure.
- */
-static int
-ctc_tty_open(struct tty_struct *tty, struct file *filp)
-{
-	ctc_tty_info *info;
-	unsigned long saveflags;
-	int retval,
-	 line;
-
-	DBF_TEXT(trace, 3, __FUNCTION__);
-	line = tty->index;
-	if (line < 0 || line > CTC_TTY_MAX_DEVICES)
-		return -ENODEV;
-	info = &driver->info[line];
-	if (ctc_tty_paranoia_check(info, tty->name, "ctc_tty_open"))
-		return -ENODEV;
-	if (!info->netdev)
-		return -ENODEV;
-#ifdef CTC_DEBUG_MODEM_OPEN
-	printk(KERN_DEBUG "ctc_tty_open %s, count = %d\n", tty->name,
-	       info->count);
-#endif
-	spin_lock_irqsave(&ctc_tty_lock, saveflags);
-	info->count++;
-	tty->driver_data = info;
-	info->tty = tty;
-	spin_unlock_irqrestore(&ctc_tty_lock, saveflags);
-	/*
-	 * Start up serial port
-	 */
-	retval = ctc_tty_startup(info);
-	if (retval) {
-#ifdef CTC_DEBUG_MODEM_OPEN
-		printk(KERN_DEBUG "ctc_tty_open return after startup\n");
-#endif
-		return retval;
-	}
-	retval = ctc_tty_block_til_ready(tty, filp, info);
-	if (retval) {
-#ifdef CTC_DEBUG_MODEM_OPEN
-		printk(KERN_DEBUG "ctc_tty_open return after ctc_tty_block_til_ready \n");
-#endif
-		return retval;
-	}
-#ifdef CTC_DEBUG_MODEM_OPEN
-	printk(KERN_DEBUG "ctc_tty_open %s successful...\n", tty->name);
-#endif
-	return 0;
-}
-
-static void
-ctc_tty_close(struct tty_struct *tty, struct file *filp)
-{
-	ctc_tty_info *info = (ctc_tty_info *) tty->driver_data;
-	ulong flags;
-	ulong timeout;
-	DBF_TEXT(trace, 3, __FUNCTION__);
-	if (!info || ctc_tty_paranoia_check(info, tty->name, "ctc_tty_close"))
-		return;
-	spin_lock_irqsave(&ctc_tty_lock, flags);
-	if (tty_hung_up_p(filp)) {
-		spin_unlock_irqrestore(&ctc_tty_lock, flags);
-#ifdef CTC_DEBUG_MODEM_OPEN
-		printk(KERN_DEBUG "ctc_tty_close return after tty_hung_up_p\n");
-#endif
-		return;
-	}
-	if ((tty->count == 1) && (info->count != 1)) {
-		/*
-		 * Uh, oh.  tty->count is 1, which means that the tty
-		 * structure will be freed.  Info->count should always
-		 * be one in these conditions.  If it's greater than
-		 * one, we've got real problems, since it means the
-		 * serial port won't be shutdown.
-		 */
-		printk(KERN_ERR "ctc_tty_close: bad port count; tty->count is 1, "
-		       "info->count is %d\n", info->count);
-		info->count = 1;
-	}
-	if (--info->count < 0) {
-		printk(KERN_ERR "ctc_tty_close: bad port count for %s%d: %d\n",
-		       CTC_TTY_NAME, info->line, info->count);
-		info->count = 0;
-	}
-	if (info->count) {
-		local_irq_restore(flags);
-#ifdef CTC_DEBUG_MODEM_OPEN
-		printk(KERN_DEBUG "ctc_tty_close after info->count != 0\n");
-#endif
-		return;
-	}
-	info->flags |= CTC_ASYNC_CLOSING;
-	tty->closing = 1;
-	/*
-	 * At this point we stop accepting input.  To do this, we
-	 * disable the receive line status interrupts, and tell the
-	 * interrupt driver to stop checking the data ready bit in the
-	 * line status register.
-	 */
-	if (info->flags & CTC_ASYNC_INITIALIZED) {
-		tty_wait_until_sent(tty, 30*HZ); /* 30 seconds timeout */
-		/*
-		 * Before we drop DTR, make sure the UART transmitter
-		 * has completely drained; this is especially
-		 * important if there is a transmit FIFO!
-		 */
-		timeout = jiffies + HZ;
-		while (!(info->lsr & UART_LSR_TEMT)) {
-			spin_unlock_irqrestore(&ctc_tty_lock, flags);
-			msleep(500);
-			spin_lock_irqsave(&ctc_tty_lock, flags);
-			if (time_after(jiffies,timeout))
-				break;
-		}
-	}
-	ctc_tty_shutdown(info);
-	if (tty->driver->flush_buffer) {
-		skb_queue_purge(&info->tx_queue);
-		info->lsr |= UART_LSR_TEMT;
-	}
-	tty_ldisc_flush(tty);
-	info->tty = 0;
-	tty->closing = 0;
-	if (info->blocked_open) {
-		msleep_interruptible(500);
-		wake_up_interruptible(&info->open_wait);
-	}
-	info->flags &= ~(CTC_ASYNC_NORMAL_ACTIVE | CTC_ASYNC_CLOSING);
-	wake_up_interruptible(&info->close_wait);
-	spin_unlock_irqrestore(&ctc_tty_lock, flags);
-#ifdef CTC_DEBUG_MODEM_OPEN
-	printk(KERN_DEBUG "ctc_tty_close normal exit\n");
-#endif
-}
-
-/*
- * ctc_tty_hangup() --- called by tty_hangup() when a hangup is signaled.
- */
-static void
-ctc_tty_hangup(struct tty_struct *tty)
-{
-	ctc_tty_info *info = (ctc_tty_info *)tty->driver_data;
-	unsigned long saveflags;
-	DBF_TEXT(trace, 3, __FUNCTION__);
-	if (ctc_tty_paranoia_check(info, tty->name, "ctc_tty_hangup"))
-		return;
-	ctc_tty_shutdown(info);
-	info->count = 0;
-	info->flags &= ~CTC_ASYNC_NORMAL_ACTIVE;
-	spin_lock_irqsave(&ctc_tty_lock, saveflags);
-	info->tty = 0;
-	spin_unlock_irqrestore(&ctc_tty_lock, saveflags);
-	wake_up_interruptible(&info->open_wait);
-}
-
-
-/*
- * For all online tty's, try sending data to
- * the lower levels.
- */
-static void
-ctc_tty_task(unsigned long arg)
-{
-	ctc_tty_info *info = (void *)arg;
-	unsigned long saveflags;
-	int again;
-
-	DBF_TEXT(trace, 3, __FUNCTION__);
-	spin_lock_irqsave(&ctc_tty_lock, saveflags);
-	if ((!ctc_tty_shuttingdown) && info) {
-		again = ctc_tty_tint(info);
-		if (!again)
-			info->lsr |= UART_LSR_TEMT;
-		again |= ctc_tty_readmodem(info);
-		if (again) {
-			tasklet_schedule(&info->tasklet);
-		}
-	}
-	spin_unlock_irqrestore(&ctc_tty_lock, saveflags);
-}
-
-static struct tty_operations ctc_ops = {
-	.open = ctc_tty_open,
-	.close = ctc_tty_close,
-	.write = ctc_tty_write,
-	.flush_chars = ctc_tty_flush_chars,
-	.write_room = ctc_tty_write_room,
-	.chars_in_buffer = ctc_tty_chars_in_buffer,
-	.flush_buffer = ctc_tty_flush_buffer,
-	.ioctl = ctc_tty_ioctl,
-	.throttle = ctc_tty_throttle,
-	.unthrottle = ctc_tty_unthrottle,
-	.set_termios = ctc_tty_set_termios,
-	.hangup = ctc_tty_hangup,
-	.tiocmget = ctc_tty_tiocmget,
-	.tiocmset = ctc_tty_tiocmset,
-};
-
-int
-ctc_tty_init(void)
-{
-	int i;
-	ctc_tty_info *info;
-	struct tty_driver *device;
-
-	DBF_TEXT(trace, 2, __FUNCTION__);
-	driver = kmalloc(sizeof(ctc_tty_driver), GFP_KERNEL);
-	if (driver == NULL) {
-		printk(KERN_WARNING "Out of memory in ctc_tty_modem_init\n");
-		return -ENOMEM;
-	}
-	memset(driver, 0, sizeof(ctc_tty_driver));
-	device = alloc_tty_driver(CTC_TTY_MAX_DEVICES);
-	if (!device) {
-		kfree(driver);
-		printk(KERN_WARNING "Out of memory in ctc_tty_modem_init\n");
-		return -ENOMEM;
-	}
-
-	device->devfs_name = "ctc/" CTC_TTY_NAME;
-	device->name = CTC_TTY_NAME;
-	device->major = CTC_TTY_MAJOR;
-	device->minor_start = 0;
-	device->type = TTY_DRIVER_TYPE_SERIAL;
-	device->subtype = SERIAL_TYPE_NORMAL;
-	device->init_termios = tty_std_termios;
-	device->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL;
-	device->flags = TTY_DRIVER_REAL_RAW;
-	device->driver_name = "ctc_tty",
-	tty_set_operations(device, &ctc_ops);
-	if (tty_register_driver(device)) {
-		printk(KERN_WARNING "ctc_tty: Couldn't register serial-device\n");
-		put_tty_driver(device);
-		kfree(driver);
-		return -1;
-	}
-	driver->ctc_tty_device = device;
-	for (i = 0; i < CTC_TTY_MAX_DEVICES; i++) {
-		info = &driver->info[i];
-		init_MUTEX(&info->write_sem);
-		tasklet_init(&info->tasklet, ctc_tty_task,
-				(unsigned long) info);
-		info->magic = CTC_ASYNC_MAGIC;
-		info->line = i;
-		info->tty = 0;
-		info->count = 0;
-		info->blocked_open = 0;
-		init_waitqueue_head(&info->open_wait);
-		init_waitqueue_head(&info->close_wait);
-		skb_queue_head_init(&info->tx_queue);
-		skb_queue_head_init(&info->rx_queue);
-		init_timer(&info->stoptimer);
-		info->stoptimer.function = ctc_tty_stopdev;
-		info->stoptimer.data = (unsigned long)info;
-		info->mcr = UART_MCR_RTS;
-	}
-	return 0;
-}
-
-int
-ctc_tty_register_netdev(struct net_device *dev) {
-	int ttynum;
-	char *err;
-	char *p;
-
-	DBF_TEXT(trace, 2, __FUNCTION__);
-	if ((!dev) || (!dev->name)) {
-		printk(KERN_WARNING
-		       "ctc_tty_register_netdev called "
-		       "with NULL dev or NULL dev-name\n");
-		return -1;
-	}
-
-	/*
-	 *	If the name is a format string the caller wants us to
-	 *	do a name allocation : format string must end with %d
-	 */
-	if (strchr(dev->name, '%'))
-	{
-		int err = dev_alloc_name(dev, dev->name);	// dev->name is changed by this
-		if (err < 0) {
-			printk(KERN_DEBUG "dev_alloc returned error %d\n", err);
-			return err;
-		}
-
-	}
-
-	for (p = dev->name; p && ((*p < '0') || (*p > '9')); p++);
-	ttynum = simple_strtoul(p, &err, 0);
-	if ((ttynum < 0) || (ttynum >= CTC_TTY_MAX_DEVICES) ||
-	    (err && *err)) {
-		printk(KERN_WARNING
-		       "ctc_tty_register_netdev called "
-		       "with number in name '%s'\n", dev->name);
-		return -1;
-	}
-	if (driver->info[ttynum].netdev) {
-		printk(KERN_WARNING
-		       "ctc_tty_register_netdev called "
-		       "for already registered device '%s'\n",
-		       dev->name);
-		return -1;
-	}
-	driver->info[ttynum].netdev = dev;
-	return 0;
-}
-
-void
-ctc_tty_unregister_netdev(struct net_device *dev) {
-	int i;
-	unsigned long saveflags;
-	ctc_tty_info *info = NULL;
-
-	DBF_TEXT(trace, 2, __FUNCTION__);
-	spin_lock_irqsave(&ctc_tty_lock, saveflags);
-	for (i = 0; i < CTC_TTY_MAX_DEVICES; i++)
-		if (driver->info[i].netdev == dev) {
-			info = &driver->info[i];
-			break;
-		}
-	if (info) {
-		info->netdev = NULL;
-		skb_queue_purge(&info->tx_queue);
-		skb_queue_purge(&info->rx_queue);
-	}
-	spin_unlock_irqrestore(&ctc_tty_lock, saveflags);
-}
-
-void
-ctc_tty_cleanup(void) {
-	unsigned long saveflags;
-
-	DBF_TEXT(trace, 2, __FUNCTION__);
-	spin_lock_irqsave(&ctc_tty_lock, saveflags);
-	ctc_tty_shuttingdown = 1;
-	spin_unlock_irqrestore(&ctc_tty_lock, saveflags);
-	tty_unregister_driver(driver->ctc_tty_device);
-	put_tty_driver(driver->ctc_tty_device);
-	kfree(driver);
-	driver = NULL;
-}