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TTY: amiserial/simserial, use count from tty_port 

Nothing special. Just remove count from serial_state and change all
users to use tty_port.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
hifive-unleashed-5.1
Jiri Slaby 2012-03-05 14:52:26 +01:00 committed by Greg Kroah-Hartman
parent 799be6ff2f
commit 12c8035435
3 changed files with 29 additions and 30 deletions
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24
arch/ia64/hp/sim/simserial.c
View File

@ -500,26 +500,26 @@ static void rs_close(struct tty_struct *tty, struct file * filp)
return;
}
#ifdef SIMSERIAL_DEBUG
printk("rs_close ttys%d, count = %d\n", info->line, info->count);
printk("rs_close ttys%d, count = %d\n", info->line, info->tport.count);
#endif
if ((tty->count == 1) && (info->count != 1)) {
if ((tty->count == 1) && (info->tport.count != 1)) {
/*
* Uh, oh. tty->count is 1, which means that the tty
* structure will be freed. info->count should always
* structure will be freed. info->tport.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, "
"info->count is %d\n", info->count);
info->count = 1;
"info->tport.count is %d\n", info->tport.count);
info->tport.count = 1;
}
if (--info->count < 0) {
if (--info->tport.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->tport.count);
info->tport.count = 0;
}
if (info->count) {
if (info->tport.count) {
local_irq_restore(flags);
return;
}
@ -567,7 +567,7 @@ static void rs_hangup(struct tty_struct *tty)
return;
shutdown(tty, info);
info->count = 0;
info->tport.count = 0;
info->flags &= ~ASYNC_NORMAL_ACTIVE;
info->tport.tty = NULL;
wake_up_interruptible(&info->tport.open_wait);
@ -661,13 +661,13 @@ static int rs_open(struct tty_struct *tty, struct file * filp)
int retval;
unsigned long page;
info->count++;
info->tport.count++;
info->tport.tty = tty;
tty->driver_data = info;
tty->port = &info->tport;
#ifdef SIMSERIAL_DEBUG
printk("rs_open %s, count = %d\n", tty->name, info->count);
printk("rs_open %s, count = %d\n", tty->name, info->tport.count);
#endif
tty->low_latency = (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0;

34
drivers/tty/amiserial.c
View File

@ -1383,26 +1383,26 @@ static void rs_close(struct tty_struct *tty, struct file * filp)
}
#ifdef SERIAL_DEBUG_OPEN
printk("rs_close ttys%d, count = %d\n", state->line, state->count);
printk("rs_close ttys%d, count = %d\n", state->line, state->tport.count);
#endif
if ((tty->count == 1) && (state->count != 1)) {
if ((tty->count == 1) && (state->tport.count != 1)) {
/*
* Uh, oh. tty->count is 1, which means that the tty
* structure will be freed. state->count should always
* structure will be freed. state->tport.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;
"state->tport.count is %d\n", state->tport.count);
state->tport.count = 1;
}
if (--state->count < 0) {
if (--state->tport.count < 0) {
printk("rs_close: bad serial port count for ttys%d: %d\n",
state->line, state->count);
state->count = 0;
state->line, state->tport.count);
state->tport.count = 0;
}
if (state->count) {
if (state->tport.count) {
DBG_CNT("before DEC-2");
local_irq_restore(flags);
return;
@ -1529,7 +1529,7 @@ static void rs_hangup(struct tty_struct *tty)
rs_flush_buffer(tty);
shutdown(tty, info);
info->count = 0;
info->tport.count = 0;
info->flags &= ~ASYNC_NORMAL_ACTIVE;
info->tport.tty = NULL;
wake_up_interruptible(&info->tport.open_wait);
@ -1584,7 +1584,7 @@ static int 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->tport.count is dropped by one, so that
* rs_close() knows when to free things. We restore it upon
* exit, either normal or abnormal.
*/
@ -1592,12 +1592,12 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp,
add_wait_queue(&info->tport.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->tport.count);
#endif
local_irq_save(flags);
if (!tty_hung_up_p(filp)) {
extra_count = 1;
info->count--;
info->tport.count--;
}
local_irq_restore(flags);
info->tport.blocked_open++;
@ -1628,7 +1628,7 @@ static int 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->tport.count);
#endif
tty_unlock();
schedule();
@ -1637,11 +1637,11 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp,
__set_current_state(TASK_RUNNING);
remove_wait_queue(&info->tport.open_wait, &wait);
if (extra_count)
info->count++;
info->tport.count++;
info->tport.blocked_open--;
#ifdef SERIAL_DEBUG_OPEN
printk("block_til_ready after blocking: ttys%d, count = %d\n",
info->line, info->count);
info->line, info->tport.count);
#endif
if (retval)
return retval;
@ -1660,7 +1660,7 @@ static int rs_open(struct tty_struct *tty, struct file * filp)
struct serial_state *info = rs_table + tty->index;
int retval;
info->count++;
info->tport.count++;
info->tport.tty = tty;
tty->driver_data = info;
tty->port = &info->tport;

1
include/linux/serialP.h
View File

@ -35,7 +35,6 @@ struct serial_state {
int line;
int xmit_fifo_size;
int custom_divisor;
int count;
struct async_icount icount;
struct tty_port tport;