static void rs_hangup(struct tty_struct *tty)
{
	struct serial_state *info = tty->driver_data;

	rs_flush_buffer(tty);
	tty_port_hangup(&info->port);
}
Beispiel #2
0
/*
 * rs_hangup() --- called by tty_hangup() when a hangup is signaled.
 */
static void rs_hangup(struct tty_struct *tty)
{
	struct serial_state *info = tty->driver_data;

	if (serial_paranoia_check(info, tty->name, "rs_hangup"))
		return;

	rs_flush_buffer(tty);
	shutdown(tty, info);
	info->tport.count = 0;
	info->tport.flags &= ~ASYNC_NORMAL_ACTIVE;
	info->tport.tty = NULL;
	wake_up_interruptible(&info->tport.open_wait);
}
/*
 * rs_hangup() --- called by tty_hangup() when a hangup is signaled.
 */
void rs_hangup(struct tty_struct *tty)
{
	struct m68k_serial * info = (struct m68k_serial *)tty->driver_data;
	
	if (serial_paranoia_check(info, tty->name, "rs_hangup"))
		return;
	
	rs_flush_buffer(tty);
	shutdown(info, tty);
	info->tport.count = 0;
	info->tport.flags &= ~ASYNC_NORMAL_ACTIVE;
	tty_port_tty_set(&info->tport, NULL);
	wake_up_interruptible(&info->tport.open_wait);
}
Beispiel #4
0
/*
 * rs_hangup() --- called by tty_hangup() when a hangup is signaled.
 */
void rs_hangup(struct tty_struct *tty)
{
	struct m68k_serial * info = (struct m68k_serial *)tty->driver_data;

	if (serial_paranoia_check(info, tty->name, "rs_hangup"))
		return;

	rs_flush_buffer(tty);
	shutdown(info);
	info->event = 0;
	info->count = 0;
	info->flags &= ~S_NORMAL_ACTIVE;
	info->tty = NULL;
	wake_up_interruptible(&info->open_wait);
}
static void rs_hangup(struct tty_struct *tty)
{
	struct async_struct * info = tty->driver_data;
	struct serial_state *state = info->state;

	if (serial_paranoia_check(info, tty->name, "rs_hangup"))
		return;

	state = info->state;

	rs_flush_buffer(tty);
	shutdown(info);
	info->event = 0;
	state->count = 0;
	info->flags &= ~ASYNC_NORMAL_ACTIVE;
	info->tty = NULL;
	wake_up_interruptible(&info->open_wait);
}
Beispiel #6
0
/*
 * rs_hangup() --- called by tty_hangup() when a hangup is signaled.
 */
void rs_hangup(struct tty_struct *tty)
{
	struct async_struct * info = (struct async_struct *)tty->driver_data;
	
	if (serial_paranoia_check(info, tty->device, "rs_hangup"))
		return;
	
	rs_flush_buffer(tty);
	shutdown(info);
	info->event = 0;
	info->count = 0;
	info->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CALLOUT_ACTIVE);
	info->tty = 0;

	serial_close_device(info);

	wake_up_interruptible(&info->open_wait);
}
Beispiel #7
0
/*
 * ------------------------------------------------------------
 * rs_close()
 * 
 * This routine is called when the serial port gets closed.  First, we
 * wait for the last remaining data to be sent.  Then, we unlink its
 * async structure from the interrupt chain if necessary, and we free
 * that IRQ if nothing is left in the chain.
 * ------------------------------------------------------------
 */
static void rs_close(struct tty_struct *tty, struct file * filp)
{
	struct serial_state *state = tty->driver_data;
	struct tty_port *port = &state->tport;

	if (serial_paranoia_check(state, tty->name, "rs_close"))
		return;

	if (tty_port_close_start(port, tty, filp) == 0)
		return;

	/*
	 * 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.
	 */
	state->read_status_mask &= ~UART_LSR_DR;
	if (port->flags & ASYNC_INITIALIZED) {
	        /* disable receive interrupts */
	        custom.intena = IF_RBF;
		mb();
		/* clear any pending receive interrupt */
		custom.intreq = IF_RBF;
		mb();

		/*
		 * Before we drop DTR, make sure the UART transmitter
		 * has completely drained; this is especially
		 * important if there is a transmit FIFO!
		 */
		rs_wait_until_sent(tty, state->timeout);
	}
	shutdown(tty, state);
	rs_flush_buffer(tty);
		
	tty_ldisc_flush(tty);
	port->tty = NULL;

	tty_port_close_end(port, tty);
}
Beispiel #8
0
/*
 * rs_hangup() --- called by tty_hangup() when a hangup is signaled.
 */
static void rs_hangup(struct tty_struct *tty)
{
    struct async_struct * info = (struct async_struct *)tty->driver_data;
    struct serial_state *state = info->state;

#ifdef SIMSERIAL_DEBUG
    printk("rs_hangup: called\n");
#endif

    state = info->state;

    rs_flush_buffer(tty);
    if (info->flags & ASYNC_CLOSING)
        return;
    shutdown(info);

    info->event = 0;
    state->count = 0;
    info->flags &= ~ASYNC_NORMAL_ACTIVE;
    info->tty = 0;
    wake_up_interruptible(&info->open_wait);
}
Beispiel #9
0
/*
 * ------------------------------------------------------------
 * rs_close()
 *
 * This routine is called when the serial port gets closed.  First, we
 * wait for the last remaining data to be sent.  Then, we unlink its
 * S structure from the interrupt chain if necessary, and we free
 * that IRQ if nothing is left in the chain.
 * ------------------------------------------------------------
 */
static void rs_close(struct tty_struct *tty, struct file * filp)
{
	struct m68k_serial * info = (struct m68k_serial *)tty->driver_data;
	m68328_uart *uart = &uart_addr[info->line];
	unsigned long flags;

	if (!info || serial_paranoia_check(info, tty->name, "rs_close"))
		return;

	local_irq_save(flags);

	if (tty_hung_up_p(filp)) {
		local_irq_restore(flags);
		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("rs_close: bad serial port count; tty->count is 1, "
		       "info->count is %d\n", info->count);
		info->count = 1;
	}
	if (--info->count < 0) {
		printk("rs_close: bad serial port count for ttyS%d: %d\n",
		       info->line, info->count);
		info->count = 0;
	}
	if (info->count) {
		local_irq_restore(flags);
		return;
	}
	info->flags |= S_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 (info->closing_wait != S_CLOSING_WAIT_NONE)
		tty_wait_until_sent(tty, info->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.
	 */

	uart->ustcnt &= ~USTCNT_RXEN;
	uart->ustcnt &= ~(USTCNT_RXEN | USTCNT_RX_INTR_MASK);

	shutdown(info);
	rs_flush_buffer(tty);

	tty_ldisc_flush(tty);
	tty->closing = 0;
	info->event = 0;
	info->tty = NULL;
#warning "This is not and has never been valid so fix it"
#if 0
	if (tty->ldisc.num != ldiscs[N_TTY].num) {
		if (tty->ldisc.close)
			(tty->ldisc.close)(tty);
		tty->ldisc = ldiscs[N_TTY];
		tty->termios->c_line = N_TTY;
		if (tty->ldisc.open)
			(tty->ldisc.open)(tty);
	}
#endif
	if (info->blocked_open) {
		if (info->close_delay) {
			msleep_interruptible(jiffies_to_msecs(info->close_delay));
		}
		wake_up_interruptible(&info->open_wait);
	}
	info->flags &= ~(S_NORMAL_ACTIVE|S_CLOSING);
	wake_up_interruptible(&info->close_wait);
	local_irq_restore(flags);
}
Beispiel #10
0
/*
 * ------------------------------------------------------------
 * rs_close()
 *
 * This routine is called when the serial port gets closed.  First, we
 * wait for the last remaining data to be sent.  Then, we unlink its
 * async structure from the interrupt chain if necessary, and we free
 * that IRQ if nothing is left in the chain.
 * ------------------------------------------------------------
 */
static void rs_close(struct tty_struct *tty, struct file * filp)
{
	struct async_struct * info = (struct async_struct *)tty->driver_data;
	struct serial_state *state;
	unsigned long flags;

	if (!info ) return;

	state = info->state;

	local_irq_save(flags);
	if (tty_hung_up_p(filp)) {
#ifdef SIMSERIAL_DEBUG
		printk("rs_close: hung_up\n");
#endif
		local_irq_restore(flags);
		return;
	}
#ifdef SIMSERIAL_DEBUG
	printk("rs_close ttys%d, count = %d\n", info->line, state->count);
#endif
	if ((tty->count == 1) && (state->count != 1)) {
		/*
		 * Uh, oh.  tty->count is 1, which means that the tty
		 * structure will be freed.  state->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 "rs_close: bad serial port count; tty->count is 1, "
		       "state->count is %d\n", state->count);
		state->count = 1;
	}
	if (--state->count < 0) {
		printk(KERN_ERR "rs_close: bad serial port count for ttys%d: %d\n",
		       info->line, state->count);
		state->count = 0;
	}
	if (state->count) {
		local_irq_restore(flags);
		return;
	}
	info->flags |= ASYNC_CLOSING;
	local_irq_restore(flags);

	/*
	 * Now we wait for the transmit buffer to clear; and we notify
	 * the line discipline to only process XON/XOFF characters.
	 */
	shutdown(info);
	rs_flush_buffer(tty);
	tty_ldisc_flush(tty);
	info->event = 0;
	info->tty = NULL;
	if (info->blocked_open) {
		if (info->close_delay)
			schedule_timeout_interruptible(info->close_delay);
		wake_up_interruptible(&info->open_wait);
	}
	info->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
	wake_up_interruptible(&info->close_wait);
}
static void rs_close(struct tty_struct *tty, struct file * filp)
{
	struct async_struct * info = tty->driver_data;
	struct serial_state *state;
	unsigned long flags;

	if (!info || serial_paranoia_check(info, tty->name, "rs_close"))
		return;

	state = info->state;

	local_irq_save(flags);

	if (tty_hung_up_p(filp)) {
		DBG_CNT("before DEC-hung");
		local_irq_restore(flags);
		return;
	}

#ifdef SERIAL_DEBUG_OPEN
	printk("rs_close ttys%d, count = %d\n", info->line, state->count);
#endif
	if ((tty->count == 1) && (state->count != 1)) {
		/*
		 * Uh, oh.  tty->count is 1, which means that the tty
		 * structure will be freed.  state->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("rs_close: bad serial port count; tty->count is 1, "
		       "state->count is %d\n", state->count);
		state->count = 1;
	}
	if (--state->count < 0) {
		printk("rs_close: bad serial port count for ttys%d: %d\n",
		       info->line, state->count);
		state->count = 0;
	}
	if (state->count) {
		DBG_CNT("before DEC-2");
		local_irq_restore(flags);
		return;
	}
	info->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 (info->closing_wait != ASYNC_CLOSING_WAIT_NONE)
		tty_wait_until_sent(tty, info->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.
	 */
	info->read_status_mask &= ~UART_LSR_DR;
	if (info->flags & ASYNC_INITIALIZED) {
	        /* disable receive interrupts */
	        custom.intena = IF_RBF;
		mb();
		/* clear any pending receive interrupt */
		custom.intreq = IF_RBF;
		mb();

		/*
		 * Before we drop DTR, make sure the UART transmitter
		 * has completely drained; this is especially
		 * important if there is a transmit FIFO!
		 */
		rs_wait_until_sent(tty, info->timeout);
	}
	shutdown(info);
	rs_flush_buffer(tty);
		
	tty_ldisc_flush(tty);
	tty->closing = 0;
	info->event = 0;
	info->tty = NULL;
	if (info->blocked_open) {
		if (info->close_delay) {
			msleep_interruptible(jiffies_to_msecs(info->close_delay));
		}
		wake_up_interruptible(&info->open_wait);
	}
	info->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
	wake_up_interruptible(&info->close_wait);
	local_irq_restore(flags);
}