tty: move obsolete and broken generic_serial drivers to drivers/staging/generic_serial/

As planned by Arnd Bergmann, this moves the following drivers to the
drivers/staging/generic_serial directory where they will be removed
after 2.6.41 if no one steps up to claim them.
	generic_serial
	rio
	ser_a2232
	sx
	vme_scc

Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 0 insertions, 844 deletions

diff --git a/drivers/char/generic_serial.c b/drivers/char/generic_serial.c
deleted file mode 100644
index 5954ee1dc953..000000000000
--- a/drivers/char/generic_serial.c
+++ /dev/null
@@ -1,844 +0,0 @@
-/*
- *  generic_serial.c
- *
- *  Copyright (C) 1998/1999 R.E.Wolff@BitWizard.nl
- *
- *  written for the SX serial driver.
- *     Contains the code that should be shared over all the serial drivers.
- *
- *  Credit for the idea to do it this way might go to Alan Cox. 
- *
- *
- *  Version 0.1 -- December, 1998. Initial version.
- *  Version 0.2 -- March, 1999.    Some more routines. Bugfixes. Etc.
- *  Version 0.5 -- August, 1999.   Some more fixes. Reformat for Linus.
- *
- *  BitWizard is actively maintaining this file. We sometimes find
- *  that someone submitted changes to this file. We really appreciate
- *  your help, but please submit changes through us. We're doing our
- *  best to be responsive.  -- REW
- * */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/tty.h>
-#include <linux/sched.h>
-#include <linux/serial.h>
-#include <linux/mm.h>
-#include <linux/generic_serial.h>
-#include <linux/interrupt.h>
-#include <linux/tty_flip.h>
-#include <linux/delay.h>
-#include <linux/gfp.h>
-#include <asm/uaccess.h>
-
-#define DEBUG 
-
-static int gs_debug;
-
-#ifdef DEBUG
-#define gs_dprintk(f, str...) if (gs_debug & f) printk (str)
-#else
-#define gs_dprintk(f, str...) /* nothing */
-#endif
-
-#define func_enter() gs_dprintk (GS_DEBUG_FLOW, "gs: enter %s\n", __func__)
-#define func_exit()  gs_dprintk (GS_DEBUG_FLOW, "gs: exit  %s\n", __func__)
-
-#define RS_EVENT_WRITE_WAKEUP	1
-
-module_param(gs_debug, int, 0644);
-
-
-int gs_put_char(struct tty_struct * tty, unsigned char ch)
-{
-	struct gs_port *port;
-
-	func_enter (); 
-
-	port = tty->driver_data;
-
-	if (!port) return 0;
-
-	if (! (port->port.flags & ASYNC_INITIALIZED)) return 0;
-
-	/* Take a lock on the serial tranmit buffer! */
-	mutex_lock(& port->port_write_mutex);
-
-	if (port->xmit_cnt >= SERIAL_XMIT_SIZE - 1) {
-		/* Sorry, buffer is full, drop character. Update statistics???? -- REW */
-		mutex_unlock(&port->port_write_mutex);
-		return 0;
-	}
-
-	port->xmit_buf[port->xmit_head++] = ch;
-	port->xmit_head &= SERIAL_XMIT_SIZE - 1;
-	port->xmit_cnt++;  /* Characters in buffer */
-
-	mutex_unlock(&port->port_write_mutex);
-	func_exit ();
-	return 1;
-}
-
-
-/*
-> Problems to take into account are:
->       -1- Interrupts that empty part of the buffer.
->       -2- page faults on the access to userspace. 
->       -3- Other processes that are also trying to do a "write". 
-*/
-
-int gs_write(struct tty_struct * tty, 
-                    const unsigned char *buf, int count)
-{
-	struct gs_port *port;
-	int c, total = 0;
-	int t;
-
-	func_enter ();
-
-	port = tty->driver_data;
-
-	if (!port) return 0;
-
-	if (! (port->port.flags & ASYNC_INITIALIZED))
-		return 0;
-
-	/* get exclusive "write" access to this port (problem 3) */
-	/* This is not a spinlock because we can have a disk access (page 
-		 fault) in copy_from_user */
-	mutex_lock(& port->port_write_mutex);
-
-	while (1) {
-
-		c = count;
- 
-		/* This is safe because we "OWN" the "head". Noone else can 
-		   change the "head": we own the port_write_mutex. */
-		/* Don't overrun the end of the buffer */
-		t = SERIAL_XMIT_SIZE - port->xmit_head;
-		if (t < c) c = t;
- 
-		/* This is safe because the xmit_cnt can only decrease. This 
-		   would increase "t", so we might copy too little chars. */
-		/* Don't copy past the "head" of the buffer */
-		t = SERIAL_XMIT_SIZE - 1 - port->xmit_cnt;
-		if (t < c) c = t;
- 
-		/* Can't copy more? break out! */
-		if (c <= 0) break;
-
-		memcpy (port->xmit_buf + port->xmit_head, buf, c);
-
-		port -> xmit_cnt += c;
-		port -> xmit_head = (port->xmit_head + c) & (SERIAL_XMIT_SIZE -1);
-		buf += c;
-		count -= c;
-		total += c;
-	}
-	mutex_unlock(& port->port_write_mutex);
-
-	gs_dprintk (GS_DEBUG_WRITE, "write: interrupts are %s\n", 
-	            (port->port.flags & GS_TX_INTEN)?"enabled": "disabled");
-
-	if (port->xmit_cnt && 
-	    !tty->stopped && 
-	    !tty->hw_stopped &&
-	    !(port->port.flags & GS_TX_INTEN)) {
-		port->port.flags |= GS_TX_INTEN;
-		port->rd->enable_tx_interrupts (port);
-	}
-	func_exit ();
-	return total;
-}
-
-
-
-int gs_write_room(struct tty_struct * tty)
-{
-	struct gs_port *port = tty->driver_data;
-	int ret;
-
-	func_enter ();
-	ret = SERIAL_XMIT_SIZE - port->xmit_cnt - 1;
-	if (ret < 0)
-		ret = 0;
-	func_exit ();
-	return ret;
-}
-
-
-int gs_chars_in_buffer(struct tty_struct *tty)
-{
-	struct gs_port *port = tty->driver_data;
-	func_enter ();
-
-	func_exit ();
-	return port->xmit_cnt;
-}
-
-
-static int gs_real_chars_in_buffer(struct tty_struct *tty)
-{
-	struct gs_port *port;
-	func_enter ();
-
-	port = tty->driver_data;
-
-	if (!port->rd) return 0;
-	if (!port->rd->chars_in_buffer) return 0;
-
-	func_exit ();
-	return port->xmit_cnt + port->rd->chars_in_buffer (port);
-}
-
-
-static int gs_wait_tx_flushed (void * ptr, unsigned long timeout) 
-{
-	struct gs_port *port = ptr;
-	unsigned long end_jiffies;
-	int jiffies_to_transmit, charsleft = 0, rv = 0;
-	int rcib;
-
-	func_enter();
-
-	gs_dprintk (GS_DEBUG_FLUSH, "port=%p.\n", port);
-	if (port) {
-		gs_dprintk (GS_DEBUG_FLUSH, "xmit_cnt=%x, xmit_buf=%p, tty=%p.\n", 
-		port->xmit_cnt, port->xmit_buf, port->port.tty);
-	}
-
-	if (!port || port->xmit_cnt < 0 || !port->xmit_buf) {
-		gs_dprintk (GS_DEBUG_FLUSH, "ERROR: !port, !port->xmit_buf or prot->xmit_cnt < 0.\n");
-		func_exit();
-		return -EINVAL;  /* This is an error which we don't know how to handle. */
-	}
-
-	rcib = gs_real_chars_in_buffer(port->port.tty);
-
-	if(rcib <= 0) {
-		gs_dprintk (GS_DEBUG_FLUSH, "nothing to wait for.\n");
-		func_exit();
-		return rv;
-	}
-	/* stop trying: now + twice the time it would normally take +  seconds */
-	if (timeout == 0) timeout = MAX_SCHEDULE_TIMEOUT;
-	end_jiffies  = jiffies; 
-	if (timeout !=  MAX_SCHEDULE_TIMEOUT)
-		end_jiffies += port->baud?(2 * rcib * 10 * HZ / port->baud):0;
-	end_jiffies += timeout;
-
-	gs_dprintk (GS_DEBUG_FLUSH, "now=%lx, end=%lx (%ld).\n", 
-		    jiffies, end_jiffies, end_jiffies-jiffies); 
-
-	/* the expression is actually jiffies < end_jiffies, but that won't
-	   work around the wraparound. Tricky eh? */
-	while ((charsleft = gs_real_chars_in_buffer (port->port.tty)) &&
-	        time_after (end_jiffies, jiffies)) {
-		/* Units check: 
-		   chars * (bits/char) * (jiffies /sec) / (bits/sec) = jiffies!
-		   check! */
-
-		charsleft += 16; /* Allow 16 chars more to be transmitted ... */
-		jiffies_to_transmit = port->baud?(1 + charsleft * 10 * HZ / port->baud):0;
-		/*                                ^^^ Round up.... */
-		if (jiffies_to_transmit <= 0) jiffies_to_transmit = 1;
-
-		gs_dprintk (GS_DEBUG_FLUSH, "Expect to finish in %d jiffies "
-			    "(%d chars).\n", jiffies_to_transmit, charsleft); 
-
-		msleep_interruptible(jiffies_to_msecs(jiffies_to_transmit));
-		if (signal_pending (current)) {
-			gs_dprintk (GS_DEBUG_FLUSH, "Signal pending. Bombing out: "); 
-			rv = -EINTR;
-			break;
-		}
-	}
-
-	gs_dprintk (GS_DEBUG_FLUSH, "charsleft = %d.\n", charsleft); 
-	set_current_state (TASK_RUNNING);
-
-	func_exit();
-	return rv;
-}
-
-
-
-void gs_flush_buffer(struct tty_struct *tty)
-{
-	struct gs_port *port;
-	unsigned long flags;
-
-	func_enter ();
-
-	port = tty->driver_data;
-
-	if (!port) return;
-
-	/* XXX Would the write semaphore do? */
-	spin_lock_irqsave (&port->driver_lock, flags);
-	port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
-	spin_unlock_irqrestore (&port->driver_lock, flags);
-
-	tty_wakeup(tty);
-	func_exit ();
-}
-
-
-void gs_flush_chars(struct tty_struct * tty)
-{
-	struct gs_port *port;
-
-	func_enter ();
-
-	port = tty->driver_data;
-
-	if (!port) return;
-
-	if (port->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped ||
-	    !port->xmit_buf) {
-		func_exit ();
-		return;
-	}
-
-	/* Beats me -- REW */
-	port->port.flags |= GS_TX_INTEN;
-	port->rd->enable_tx_interrupts (port);
-	func_exit ();
-}
-
-
-void gs_stop(struct tty_struct * tty)
-{
-	struct gs_port *port;
-
-	func_enter ();
-
-	port = tty->driver_data;
-
-	if (!port) return;
-
-	if (port->xmit_cnt && 
-	    port->xmit_buf && 
-	    (port->port.flags & GS_TX_INTEN) ) {
-		port->port.flags &= ~GS_TX_INTEN;
-		port->rd->disable_tx_interrupts (port);
-	}
-	func_exit ();
-}
-
-
-void gs_start(struct tty_struct * tty)
-{
-	struct gs_port *port;
-
-	port = tty->driver_data;
-
-	if (!port) return;
-
-	if (port->xmit_cnt && 
-	    port->xmit_buf && 
-	    !(port->port.flags & GS_TX_INTEN) ) {
-		port->port.flags |= GS_TX_INTEN;
-		port->rd->enable_tx_interrupts (port);
-	}
-	func_exit ();
-}
-
-
-static void gs_shutdown_port (struct gs_port *port)
-{
-	unsigned long flags;
-
-	func_enter();
-	
-	if (!port) return;
-	
-	if (!(port->port.flags & ASYNC_INITIALIZED))
-		return;
-
-	spin_lock_irqsave(&port->driver_lock, flags);
-
-	if (port->xmit_buf) {
-		free_page((unsigned long) port->xmit_buf);
-		port->xmit_buf = NULL;
-	}
-
-	if (port->port.tty)
-		set_bit(TTY_IO_ERROR, &port->port.tty->flags);
-
-	port->rd->shutdown_port (port);
-
-	port->port.flags &= ~ASYNC_INITIALIZED;
-	spin_unlock_irqrestore(&port->driver_lock, flags);
-
-	func_exit();
-}
-
-
-void gs_hangup(struct tty_struct *tty)
-{
-	struct gs_port *port;
-	unsigned long flags;
-
-	func_enter ();
-
-	port = tty->driver_data;
-	tty = port->port.tty;
-	if (!tty) 
-		return;
-
-	gs_shutdown_port (port);
-	spin_lock_irqsave(&port->port.lock, flags);
-	port->port.flags &= ~(ASYNC_NORMAL_ACTIVE|GS_ACTIVE);
-	port->port.tty = NULL;
-	port->port.count = 0;
-	spin_unlock_irqrestore(&port->port.lock, flags);
-
-	wake_up_interruptible(&port->port.open_wait);
-	func_exit ();
-}
-
-
-int gs_block_til_ready(void *port_, struct file * filp)
-{
-	struct gs_port *gp = port_;
-	struct tty_port *port = &gp->port;
-	DECLARE_WAITQUEUE(wait, current);
-	int    retval;
-	int    do_clocal = 0;
-	int    CD;
-	struct tty_struct *tty;
-	unsigned long flags;
-
-	func_enter ();
-
-	if (!port) return 0;
-
-	tty = port->tty;
-
-	gs_dprintk (GS_DEBUG_BTR, "Entering gs_block_till_ready.\n"); 
-	/*
-	 * 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) || port->flags & ASYNC_CLOSING) {
-		interruptible_sleep_on(&port->close_wait);
-		if (port->flags & ASYNC_HUP_NOTIFY)
-			return -EAGAIN;
-		else
-			return -ERESTARTSYS;
-	}
-
-	gs_dprintk (GS_DEBUG_BTR, "after hung up\n"); 
-
-	/*
-	 * If non-blocking mode is set, or the port is not enabled,
-	 * then make the check up front and then exit.
-	 */
-	if ((filp->f_flags & O_NONBLOCK) ||
-	    (tty->flags & (1 << TTY_IO_ERROR))) {
-		port->flags |= ASYNC_NORMAL_ACTIVE;
-		return 0;
-	}
-
-	gs_dprintk (GS_DEBUG_BTR, "after nonblock\n"); 
- 
-	if (C_CLOCAL(tty))
-		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, port->count is dropped by one, so that
-	 * rs_close() knows when to free things.  We restore it upon
-	 * exit, either normal or abnormal.
-	 */
-	retval = 0;
-
-	add_wait_queue(&port->open_wait, &wait);
-
-	gs_dprintk (GS_DEBUG_BTR, "after add waitq.\n"); 
-	spin_lock_irqsave(&port->lock, flags);
-	if (!tty_hung_up_p(filp)) {
-		port->count--;
-	}
-	port->blocked_open++;
-	spin_unlock_irqrestore(&port->lock, flags);
-	while (1) {
-		CD = tty_port_carrier_raised(port);
-		gs_dprintk (GS_DEBUG_BTR, "CD is now %d.\n", CD);
-		set_current_state (TASK_INTERRUPTIBLE);
-		if (tty_hung_up_p(filp) ||
-		    !(port->flags & ASYNC_INITIALIZED)) {
-			if (port->flags & ASYNC_HUP_NOTIFY)
-				retval = -EAGAIN;
-			else
-				retval = -ERESTARTSYS;
-			break;
-		}
-		if (!(port->flags & ASYNC_CLOSING) &&
-		    (do_clocal || CD))
-			break;
-		gs_dprintk (GS_DEBUG_BTR, "signal_pending is now: %d (%lx)\n", 
-		(int)signal_pending (current), *(long*)(&current->blocked)); 
-		if (signal_pending(current)) {
-			retval = -ERESTARTSYS;
-			break;
-		}
-		schedule();
-	}
-	gs_dprintk (GS_DEBUG_BTR, "Got out of the loop. (%d)\n",
-		    port->blocked_open);
-	set_current_state (TASK_RUNNING);
-	remove_wait_queue(&port->open_wait, &wait);
-	
-	spin_lock_irqsave(&port->lock, flags);
-	if (!tty_hung_up_p(filp)) {
-		port->count++;
-	}
-	port->blocked_open--;
-	if (retval == 0)
-        	port->flags |= ASYNC_NORMAL_ACTIVE;
-	spin_unlock_irqrestore(&port->lock, flags);
-	func_exit ();
-	return retval;
-}			 
-
-
-void gs_close(struct tty_struct * tty, struct file * filp)
-{
-	unsigned long flags;
-	struct gs_port *port;
-	
-	func_enter ();
-
-	port = tty->driver_data;
-
-	if (!port) return;
-
-	if (!port->port.tty) {
-		/* This seems to happen when this is called from vhangup. */
-		gs_dprintk (GS_DEBUG_CLOSE, "gs: Odd: port->port.tty is NULL\n");
-		port->port.tty = tty;
-	}
-
-	spin_lock_irqsave(&port->port.lock, flags);
-
-	if (tty_hung_up_p(filp)) {
-		spin_unlock_irqrestore(&port->port.lock, flags);
-		if (port->rd->hungup)
-			port->rd->hungup (port);
-		func_exit ();
-		return;
-	}
-
-	if ((tty->count == 1) && (port->port.count != 1)) {
-		printk(KERN_ERR "gs: gs_close port %p: bad port count;"
-		       " tty->count is 1, port count is %d\n", port, port->port.count);
-		port->port.count = 1;
-	}
-	if (--port->port.count < 0) {
-		printk(KERN_ERR "gs: gs_close port %p: bad port count: %d\n", port, port->port.count);
-		port->port.count = 0;
-	}
-
-	if (port->port.count) {
-		gs_dprintk(GS_DEBUG_CLOSE, "gs_close port %p: count: %d\n", port, port->port.count);
-		spin_unlock_irqrestore(&port->port.lock, flags);
-		func_exit ();
-		return;
-	}
-	port->port.flags |= ASYNC_CLOSING;
-
-	/*
-	 * Now we wait for the transmit buffer to clear; and we notify 
-	 * the line discipline to only process XON/XOFF characters.
-	 */
-	tty->closing = 1;
-	/* if (port->closing_wait != ASYNC_CLOSING_WAIT_NONE)
-	   tty_wait_until_sent(tty, port->closing_wait); */
-
-	/*
-	 * 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.
-	 */
-
-	spin_lock_irqsave(&port->driver_lock, flags);
-	port->rd->disable_rx_interrupts (port);
-	spin_unlock_irqrestore(&port->driver_lock, flags);
-	spin_unlock_irqrestore(&port->port.lock, flags);
-
-	/* close has no way of returning "EINTR", so discard return value */
-	if (port->closing_wait != ASYNC_CLOSING_WAIT_NONE)
-		gs_wait_tx_flushed (port, port->closing_wait);
-
-	port->port.flags &= ~GS_ACTIVE;
-
-	gs_flush_buffer(tty);
-
-	tty_ldisc_flush(tty);
-	tty->closing = 0;
-
-	spin_lock_irqsave(&port->driver_lock, flags);
-	port->event = 0;
-	port->rd->close (port);
-	port->rd->shutdown_port (port);
-	spin_unlock_irqrestore(&port->driver_lock, flags);
-
-	spin_lock_irqsave(&port->port.lock, flags);
-	port->port.tty = NULL;
-
-	if (port->port.blocked_open) {
-		if (port->close_delay) {
-			spin_unlock_irqrestore(&port->port.lock, flags);
-			msleep_interruptible(jiffies_to_msecs(port->close_delay));
-			spin_lock_irqsave(&port->port.lock, flags);
-		}
-		wake_up_interruptible(&port->port.open_wait);
-	}
-	port->port.flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING | ASYNC_INITIALIZED);
-	spin_unlock_irqrestore(&port->port.lock, flags);
-	wake_up_interruptible(&port->port.close_wait);
-
-	func_exit ();
-}
-
-
-void gs_set_termios (struct tty_struct * tty, 
-                     struct ktermios * old_termios)
-{
-	struct gs_port *port;
-	int baudrate, tmp, rv;
-	struct ktermios *tiosp;
-
-	func_enter();
-
-	port = tty->driver_data;
-
-	if (!port) return;
-	if (!port->port.tty) {
-		/* This seems to happen when this is called after gs_close. */
-		gs_dprintk (GS_DEBUG_TERMIOS, "gs: Odd: port->port.tty is NULL\n");
-		port->port.tty = tty;
-	}
-
-
-	tiosp = tty->termios;
-
-	if (gs_debug & GS_DEBUG_TERMIOS) {
-		gs_dprintk (GS_DEBUG_TERMIOS, "termios structure (%p):\n", tiosp);
-	}
-
-	if(old_termios && (gs_debug & GS_DEBUG_TERMIOS)) {
-		if(tiosp->c_iflag != old_termios->c_iflag)  printk("c_iflag changed\n");
-		if(tiosp->c_oflag != old_termios->c_oflag)  printk("c_oflag changed\n");
-		if(tiosp->c_cflag != old_termios->c_cflag)  printk("c_cflag changed\n");
-		if(tiosp->c_lflag != old_termios->c_lflag)  printk("c_lflag changed\n");
-		if(tiosp->c_line  != old_termios->c_line)   printk("c_line changed\n");
-		if(!memcmp(tiosp->c_cc, old_termios->c_cc, NCC)) printk("c_cc changed\n");
-	}
-
-	baudrate = tty_get_baud_rate(tty);
-
-	if ((tiosp->c_cflag & CBAUD) == B38400) {
-		if (     (port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
-			baudrate = 57600;
-		else if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
-			baudrate = 115200;
-		else if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
-			baudrate = 230400;
-		else if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
-			baudrate = 460800;
-		else if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST)
-			baudrate = (port->baud_base / port->custom_divisor);
-	}
-
-	/* I recommend using THIS instead of the mess in termios (and
-	   duplicating the above code). Next we should create a clean
-	   interface towards this variable. If your card supports arbitrary
-	   baud rates, (e.g. CD1400 or 16550 based cards) then everything
-	   will be very easy..... */
-	port->baud = baudrate;
-
-	/* Two timer ticks seems enough to wakeup something like SLIP driver */
-	/* Baudrate/10 is cps. Divide by HZ to get chars per tick. */
-	tmp = (baudrate / 10 / HZ) * 2;			 
-
-	if (tmp <                 0) tmp = 0;
-	if (tmp >= SERIAL_XMIT_SIZE) tmp = SERIAL_XMIT_SIZE-1;
-
-	port->wakeup_chars = tmp;
-
-	/* We should really wait for the characters to be all sent before
-	   changing the settings. -- CAL */
-	rv = gs_wait_tx_flushed (port, MAX_SCHEDULE_TIMEOUT);
-	if (rv < 0) return /* rv */;
-
-	rv = port->rd->set_real_termios(port);
-	if (rv < 0) return /* rv */;
-
-	if ((!old_termios || 
-	     (old_termios->c_cflag & CRTSCTS)) &&
-	    !(      tiosp->c_cflag & CRTSCTS)) {
-		tty->stopped = 0;
-		gs_start(tty);
-	}
-
-#ifdef tytso_patch_94Nov25_1726
-	/* This "makes sense", Why is it commented out? */
-
-	if (!(old_termios->c_cflag & CLOCAL) &&
-	    (tty->termios->c_cflag & CLOCAL))
-		wake_up_interruptible(&port->gs.open_wait);
-#endif
-
-	func_exit();
-	return /* 0 */;
-}
-
-
-
-/* Must be called with interrupts enabled */
-int gs_init_port(struct gs_port *port)
-{
-	unsigned long flags;
-
-	func_enter ();
-
-	if (port->port.flags & ASYNC_INITIALIZED) {
-		func_exit ();
-		return 0;
-	}
-	if (!port->xmit_buf) {
-		/* We may sleep in get_zeroed_page() */
-		unsigned long tmp;
-
-		tmp = get_zeroed_page(GFP_KERNEL);
-		spin_lock_irqsave (&port->driver_lock, flags);
-		if (port->xmit_buf) 
-			free_page (tmp);
-		else
-			port->xmit_buf = (unsigned char *) tmp;
-		spin_unlock_irqrestore(&port->driver_lock, flags);
-		if (!port->xmit_buf) {
-			func_exit ();
-			return -ENOMEM;
-		}
-	}
-
-	spin_lock_irqsave (&port->driver_lock, flags);
-	if (port->port.tty)
-		clear_bit(TTY_IO_ERROR, &port->port.tty->flags);
-	mutex_init(&port->port_write_mutex);
-	port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
-	spin_unlock_irqrestore(&port->driver_lock, flags);
-	gs_set_termios(port->port.tty, NULL);
-	spin_lock_irqsave (&port->driver_lock, flags);
-	port->port.flags |= ASYNC_INITIALIZED;
-	port->port.flags &= ~GS_TX_INTEN;
-
-	spin_unlock_irqrestore(&port->driver_lock, flags);
-	func_exit ();
-	return 0;
-}
-
-
-int gs_setserial(struct gs_port *port, struct serial_struct __user *sp)
-{
-	struct serial_struct sio;
-
-	if (copy_from_user(&sio, sp, sizeof(struct serial_struct)))
-		return(-EFAULT);
-
-	if (!capable(CAP_SYS_ADMIN)) {
-		if ((sio.baud_base != port->baud_base) ||
-		    (sio.close_delay != port->close_delay) ||
-		    ((sio.flags & ~ASYNC_USR_MASK) !=
-		     (port->port.flags & ~ASYNC_USR_MASK)))
-			return(-EPERM);
-	} 
-
-	port->port.flags = (port->port.flags & ~ASYNC_USR_MASK) |
-		(sio.flags & ASYNC_USR_MASK);
-  
-	port->baud_base = sio.baud_base;
-	port->close_delay = sio.close_delay;
-	port->closing_wait = sio.closing_wait;
-	port->custom_divisor = sio.custom_divisor;
-
-	gs_set_termios (port->port.tty, NULL);
-
-	return 0;
-}
-
-
-/*****************************************************************************/
-
-/*
- *      Generate the serial struct info.
- */
-
-int gs_getserial(struct gs_port *port, struct serial_struct __user *sp)
-{
-	struct serial_struct    sio;
-
-	memset(&sio, 0, sizeof(struct serial_struct));
-	sio.flags = port->port.flags;
-	sio.baud_base = port->baud_base;
-	sio.close_delay = port->close_delay;
-	sio.closing_wait = port->closing_wait;
-	sio.custom_divisor = port->custom_divisor;
-	sio.hub6 = 0;
-
-	/* If you want you can override these. */
-	sio.type = PORT_UNKNOWN;
-	sio.xmit_fifo_size = -1;
-	sio.line = -1;
-	sio.port = -1;
-	sio.irq = -1;
-
-	if (port->rd->getserial)
-		port->rd->getserial (port, &sio);
-
-	if (copy_to_user(sp, &sio, sizeof(struct serial_struct)))
-		return -EFAULT;
-	return 0;
-
-}
-
-
-void gs_got_break(struct gs_port *port)
-{
-	func_enter ();
-
-	tty_insert_flip_char(port->port.tty, 0, TTY_BREAK);
-	tty_schedule_flip(port->port.tty);
-	if (port->port.flags & ASYNC_SAK) {
-		do_SAK (port->port.tty);
-	}
-
-	func_exit ();
-}
-
-
-EXPORT_SYMBOL(gs_put_char);
-EXPORT_SYMBOL(gs_write);
-EXPORT_SYMBOL(gs_write_room);
-EXPORT_SYMBOL(gs_chars_in_buffer);
-EXPORT_SYMBOL(gs_flush_buffer);
-EXPORT_SYMBOL(gs_flush_chars);
-EXPORT_SYMBOL(gs_stop);
-EXPORT_SYMBOL(gs_start);
-EXPORT_SYMBOL(gs_hangup);
-EXPORT_SYMBOL(gs_block_til_ready);
-EXPORT_SYMBOL(gs_close);
-EXPORT_SYMBOL(gs_set_termios);
-EXPORT_SYMBOL(gs_init_port);
-EXPORT_SYMBOL(gs_setserial);
-EXPORT_SYMBOL(gs_getserial);
-EXPORT_SYMBOL(gs_got_break);
-
-MODULE_LICENSE("GPL");