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Commit b12d8dc2 authored by Jiri Slaby's avatar Jiri Slaby Committed by Greg Kroah-Hartman
Browse files

crisv10: use counts from tty_port 



The same as flags, convert to using open/close counts from tty_port.

Signed-off-by: default avatarJiri Slaby <jslaby@suse.cz>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 4aeaeb0c

drivers/tty/serial/crisv10.c

+23 −25
Original line number Diff line number Diff line
@@ -3424,7 +3424,7 @@ set_serial_info(struct e100_serial *info, 
		goto check_and_exit;

	}



	if (info->count > 1)

	if (info->port.count > 1)

		return -EBUSY;



	/*
@@ -3760,7 +3760,7 @@ rs_close(struct tty_struct *tty, struct file * filp) 
	printk("[%d] rs_close ttyS%d, count = %d\n", current->pid,

	       info->line, info->count);

#endif

	if ((tty->count == 1) && (info->count != 1)) {

	if ((tty->count == 1) && (info->port.count != 1)) {

		/*

		 * Uh, oh.  tty->count is 1, which means that the tty

		 * structure will be freed.  Info->count should always
@@ -3770,15 +3770,15 @@ rs_close(struct tty_struct *tty, struct file * filp) 
		 */

		printk(KERN_ERR

		       "rs_close: bad serial port count; tty->count is 1, "

		       "info->count is %d\n", info->count);

		info->count = 1;

		       "info->count is %d\n", info->port.count);

		info->port.count = 1;

	}

	if (--info->count < 0) {

	if (--info->port.count < 0) {

		printk(KERN_ERR "rs_close: bad serial port count for ttyS%d: %d\n",

		       info->line, info->count);

		info->count = 0;

		       info->line, info->port.count);

		info->port.count = 0;

	}

	if (info->count) {

	if (info->port.count) {

		local_irq_restore(flags);

		return;

	}
@@ -3824,7 +3824,7 @@ rs_close(struct tty_struct *tty, struct file * filp) 
	tty->closing = 0;

	info->event = 0;

	info->port.tty = NULL;

	if (info->blocked_open) {

	if (info->port.blocked_open) {

		if (info->port.close_delay)

			schedule_timeout_interruptible(info->port.close_delay);

		wake_up_interruptible(&info->port.open_wait);
@@ -3923,7 +3923,7 @@ rs_hangup(struct tty_struct *tty) 
	rs_flush_buffer(tty);

	shutdown(info);

	info->event = 0;

	info->count = 0;

	info->port.count = 0;

	info->port.flags &= ~ASYNC_NORMAL_ACTIVE;

	info->port.tty = NULL;

	wake_up_interruptible(&info->port.open_wait);
@@ -3978,7 +3978,7 @@ block_til_ready(struct tty_struct *tty, struct file * filp, 
	/*

	 * 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

	 * this loop, info->port.count is dropped by one, so that

	 * rs_close() knows when to free things.  We restore it upon

	 * exit, either normal or abnormal.

	 */
@@ -3986,15 +3986,15 @@ block_til_ready(struct tty_struct *tty, struct file * filp, 
	add_wait_queue(&info->port.open_wait, &wait);

#ifdef SERIAL_DEBUG_OPEN

	printk("block_til_ready before block: ttyS%d, count = %d\n",

	       info->line, info->count);

	       info->line, info->port.count);

#endif

	local_irq_save(flags);

	if (!tty_hung_up_p(filp)) {

		extra_count++;

		info->count--;

		info->port.count--;

	}

	local_irq_restore(flags);

	info->blocked_open++;

	info->port.blocked_open++;

	while (1) {

		local_irq_save(flags);

		/* assert RTS and DTR */
@@ -4023,7 +4023,7 @@ block_til_ready(struct tty_struct *tty, struct file * filp, 
		}

#ifdef SERIAL_DEBUG_OPEN

		printk("block_til_ready blocking: ttyS%d, count = %d\n",

		       info->line, info->count);

		       info->line, info->port.count);

#endif

		tty_unlock(tty);

		schedule();
@@ -4032,11 +4032,11 @@ block_til_ready(struct tty_struct *tty, struct file * filp, 
	set_current_state(TASK_RUNNING);

	remove_wait_queue(&info->port.open_wait, &wait);

	if (extra_count)

		info->count++;

	info->blocked_open--;

		info->port.count++;

	info->port.blocked_open--;

#ifdef SERIAL_DEBUG_OPEN

	printk("block_til_ready after blocking: ttyS%d, count = %d\n",

	       info->line, info->count);

	       info->line, info->port.count);

#endif

	if (retval)

		return retval;
@@ -4074,10 +4074,10 @@ rs_open(struct tty_struct *tty, struct file * filp) 


#ifdef SERIAL_DEBUG_OPEN

        printk("[%d] rs_open %s, count = %d\n", current->pid, tty->name,

 	       info->count);

 	       info->port.count);

#endif



	info->count++;

	info->port.count++;

	tty->driver_data = info;

	info->port.tty = tty;
@@ -4101,7 +4101,7 @@ rs_open(struct tty_struct *tty, struct file * filp) 
	/*

	 * If DMA is enabled try to allocate the irq's.

	 */

	if (info->count == 1) {

	if (info->port.count == 1) {

		allocated_resources = 1;

		if (info->dma_in_enabled) {

			if (request_irq(info->dma_in_irq_nbr,
@@ -4174,7 +4174,7 @@ rs_open(struct tty_struct *tty, struct file * filp) 
		if (allocated_resources)

			deinit_port(info);



		/* FIXME Decrease count info->count here too? */

		/* FIXME Decrease count info->port.count here too? */

		return retval;

	}
@@ -4191,7 +4191,7 @@ rs_open(struct tty_struct *tty, struct file * filp) 
		return retval;

	}



	if ((info->count == 1) && (info->port.flags & ASYNC_SPLIT_TERMIOS)) {

	if ((info->port.count == 1) && (info->port.flags & ASYNC_SPLIT_TERMIOS)) {

		tty->termios = info->normal_termios;

		change_speed(info);

	}
@@ -4442,8 +4442,6 @@ static int __init rs_init(void) 
		info->custom_divisor = 0;

		info->x_char = 0;

		info->event = 0;

		info->count = 0;

		info->blocked_open = 0;

		info->normal_termios = driver->init_termios;

		info->xmit.buf = NULL;

		info->xmit.tail = info->xmit.head = 0;

drivers/tty/serial/crisv10.h

+0 −2
Original line number Diff line number Diff line
@@ -90,8 +90,6 @@ struct e100_serial { 
	unsigned long		event;

	int			line;

	int			type;  /* PORT_ETRAX */

	int			count;	    /* # of fd on device */

	int			blocked_open; /* # of blocked opens */

	struct circ_buf		xmit;

	struct etrax_recv_buffer *first_recv_buffer;

	struct etrax_recv_buffer *last_recv_buffer;