Commit 8fb06c77 authored by Alan Cox's avatar Alan Cox Committed by Linus Torvalds

synclink: use tty_port

Switch the synclink ports to use the new tty_port structure
Signed-off-by: default avatarAlan Cox <alan@redhat.com>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent f8ae4764
......@@ -180,8 +180,7 @@ struct tx_holding_buffer {
struct mgsl_struct {
int magic;
int flags;
int count; /* count of opens */
struct tty_port port;
int line;
int hw_version;
unsigned short close_delay;
......@@ -189,10 +188,8 @@ struct mgsl_struct {
struct mgsl_icount icount;
struct tty_struct *tty;
int timeout;
int x_char; /* xon/xoff character */
int blocked_open; /* # of blocked opens */
u16 read_status_mask;
u16 ignore_status_mask;
unsigned char *xmit_buf;
......@@ -200,9 +197,6 @@ struct mgsl_struct {
int xmit_tail;
int xmit_cnt;
wait_queue_head_t open_wait;
wait_queue_head_t close_wait;
wait_queue_head_t status_event_wait_q;
wait_queue_head_t event_wait_q;
struct timer_list tx_timer; /* HDLC transmit timeout timer */
......@@ -1134,7 +1128,7 @@ static void mgsl_bh_receive(struct mgsl_struct *info)
static void mgsl_bh_transmit(struct mgsl_struct *info)
{
struct tty_struct *tty = info->tty;
struct tty_struct *tty = info->port.tty;
unsigned long flags;
if ( debug_level >= DEBUG_LEVEL_BH )
......@@ -1276,7 +1270,7 @@ static void mgsl_isr_transmit_status( struct mgsl_struct *info )
else
#endif
{
if (info->tty->stopped || info->tty->hw_stopped) {
if (info->port.tty->stopped || info->port.tty->hw_stopped) {
usc_stop_transmitter(info);
return;
}
......@@ -1357,29 +1351,29 @@ static void mgsl_isr_io_pin( struct mgsl_struct *info )
wake_up_interruptible(&info->status_event_wait_q);
wake_up_interruptible(&info->event_wait_q);
if ( (info->flags & ASYNC_CHECK_CD) &&
if ( (info->port.flags & ASYNC_CHECK_CD) &&
(status & MISCSTATUS_DCD_LATCHED) ) {
if ( debug_level >= DEBUG_LEVEL_ISR )
printk("%s CD now %s...", info->device_name,
(status & MISCSTATUS_DCD) ? "on" : "off");
if (status & MISCSTATUS_DCD)
wake_up_interruptible(&info->open_wait);
wake_up_interruptible(&info->port.open_wait);
else {
if ( debug_level >= DEBUG_LEVEL_ISR )
printk("doing serial hangup...");
if (info->tty)
tty_hangup(info->tty);
if (info->port.tty)
tty_hangup(info->port.tty);
}
}
if ( (info->flags & ASYNC_CTS_FLOW) &&
if ( (info->port.flags & ASYNC_CTS_FLOW) &&
(status & MISCSTATUS_CTS_LATCHED) ) {
if (info->tty->hw_stopped) {
if (info->port.tty->hw_stopped) {
if (status & MISCSTATUS_CTS) {
if ( debug_level >= DEBUG_LEVEL_ISR )
printk("CTS tx start...");
if (info->tty)
info->tty->hw_stopped = 0;
if (info->port.tty)
info->port.tty->hw_stopped = 0;
usc_start_transmitter(info);
info->pending_bh |= BH_TRANSMIT;
return;
......@@ -1388,8 +1382,8 @@ static void mgsl_isr_io_pin( struct mgsl_struct *info )
if (!(status & MISCSTATUS_CTS)) {
if ( debug_level >= DEBUG_LEVEL_ISR )
printk("CTS tx stop...");
if (info->tty)
info->tty->hw_stopped = 1;
if (info->port.tty)
info->port.tty->hw_stopped = 1;
usc_stop_transmitter(info);
}
}
......@@ -1423,7 +1417,7 @@ static void mgsl_isr_transmit_data( struct mgsl_struct *info )
usc_ClearIrqPendingBits( info, TRANSMIT_DATA );
if (info->tty->stopped || info->tty->hw_stopped) {
if (info->port.tty->stopped || info->port.tty->hw_stopped) {
usc_stop_transmitter(info);
return;
}
......@@ -1453,7 +1447,7 @@ static void mgsl_isr_receive_data( struct mgsl_struct *info )
u16 status;
int work = 0;
unsigned char DataByte;
struct tty_struct *tty = info->tty;
struct tty_struct *tty = info->port.tty;
struct mgsl_icount *icount = &info->icount;
if ( debug_level >= DEBUG_LEVEL_ISR )
......@@ -1514,7 +1508,7 @@ static void mgsl_isr_receive_data( struct mgsl_struct *info )
if (status & RXSTATUS_BREAK_RECEIVED) {
flag = TTY_BREAK;
if (info->flags & ASYNC_SAK)
if (info->port.flags & ASYNC_SAK)
do_SAK(tty);
} else if (status & RXSTATUS_PARITY_ERROR)
flag = TTY_PARITY;
......@@ -1771,7 +1765,7 @@ static int startup(struct mgsl_struct * info)
if ( debug_level >= DEBUG_LEVEL_INFO )
printk("%s(%d):mgsl_startup(%s)\n",__FILE__,__LINE__,info->device_name);
if (info->flags & ASYNC_INITIALIZED)
if (info->port.flags & ASYNC_INITIALIZED)
return 0;
if (!info->xmit_buf) {
......@@ -1798,8 +1792,8 @@ static int startup(struct mgsl_struct * info)
retval = mgsl_adapter_test(info);
if ( retval ) {
if (capable(CAP_SYS_ADMIN) && info->tty)
set_bit(TTY_IO_ERROR, &info->tty->flags);
if (capable(CAP_SYS_ADMIN) && info->port.tty)
set_bit(TTY_IO_ERROR, &info->port.tty->flags);
mgsl_release_resources(info);
return retval;
}
......@@ -1807,10 +1801,10 @@ static int startup(struct mgsl_struct * info)
/* program hardware for current parameters */
mgsl_change_params(info);
if (info->tty)
clear_bit(TTY_IO_ERROR, &info->tty->flags);
if (info->port.tty)
clear_bit(TTY_IO_ERROR, &info->port.tty->flags);
info->flags |= ASYNC_INITIALIZED;
info->port.flags |= ASYNC_INITIALIZED;
return 0;
......@@ -1827,7 +1821,7 @@ static void shutdown(struct mgsl_struct * info)
{
unsigned long flags;
if (!(info->flags & ASYNC_INITIALIZED))
if (!(info->port.flags & ASYNC_INITIALIZED))
return;
if (debug_level >= DEBUG_LEVEL_INFO)
......@@ -1864,7 +1858,7 @@ static void shutdown(struct mgsl_struct * info)
/* on the ISA adapter. This has no effect for the PCI adapter */
usc_OutReg(info, PCR, (u16)((usc_InReg(info, PCR) | BIT13) | BIT12));
if (!info->tty || info->tty->termios->c_cflag & HUPCL) {
if (!info->port.tty || info->port.tty->termios->c_cflag & HUPCL) {
info->serial_signals &= ~(SerialSignal_DTR + SerialSignal_RTS);
usc_set_serial_signals(info);
}
......@@ -1873,10 +1867,10 @@ static void shutdown(struct mgsl_struct * info)
mgsl_release_resources(info);
if (info->tty)
set_bit(TTY_IO_ERROR, &info->tty->flags);
if (info->port.tty)
set_bit(TTY_IO_ERROR, &info->port.tty->flags);
info->flags &= ~ASYNC_INITIALIZED;
info->port.flags &= ~ASYNC_INITIALIZED;
} /* end of shutdown() */
......@@ -1908,7 +1902,7 @@ static void mgsl_program_hw(struct mgsl_struct *info)
usc_EnableInterrupts(info, IO_PIN);
usc_get_serial_signals(info);
if (info->netcount || info->tty->termios->c_cflag & CREAD)
if (info->netcount || info->port.tty->termios->c_cflag & CREAD)
usc_start_receiver(info);
spin_unlock_irqrestore(&info->irq_spinlock,flags);
......@@ -1921,14 +1915,14 @@ static void mgsl_change_params(struct mgsl_struct *info)
unsigned cflag;
int bits_per_char;
if (!info->tty || !info->tty->termios)
if (!info->port.tty || !info->port.tty->termios)
return;
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):mgsl_change_params(%s)\n",
__FILE__,__LINE__, info->device_name );
cflag = info->tty->termios->c_cflag;
cflag = info->port.tty->termios->c_cflag;
/* if B0 rate (hangup) specified then negate DTR and RTS */
/* otherwise assert DTR and RTS */
......@@ -1976,7 +1970,7 @@ static void mgsl_change_params(struct mgsl_struct *info)
* current data rate.
*/
if (info->params.data_rate <= 460800)
info->params.data_rate = tty_get_baud_rate(info->tty);
info->params.data_rate = tty_get_baud_rate(info->port.tty);
if ( info->params.data_rate ) {
info->timeout = (32*HZ*bits_per_char) /
......@@ -1985,31 +1979,31 @@ static void mgsl_change_params(struct mgsl_struct *info)
info->timeout += HZ/50; /* Add .02 seconds of slop */
if (cflag & CRTSCTS)
info->flags |= ASYNC_CTS_FLOW;
info->port.flags |= ASYNC_CTS_FLOW;
else
info->flags &= ~ASYNC_CTS_FLOW;
info->port.flags &= ~ASYNC_CTS_FLOW;
if (cflag & CLOCAL)
info->flags &= ~ASYNC_CHECK_CD;
info->port.flags &= ~ASYNC_CHECK_CD;
else
info->flags |= ASYNC_CHECK_CD;
info->port.flags |= ASYNC_CHECK_CD;
/* process tty input control flags */
info->read_status_mask = RXSTATUS_OVERRUN;
if (I_INPCK(info->tty))
if (I_INPCK(info->port.tty))
info->read_status_mask |= RXSTATUS_PARITY_ERROR | RXSTATUS_FRAMING_ERROR;
if (I_BRKINT(info->tty) || I_PARMRK(info->tty))
if (I_BRKINT(info->port.tty) || I_PARMRK(info->port.tty))
info->read_status_mask |= RXSTATUS_BREAK_RECEIVED;
if (I_IGNPAR(info->tty))
if (I_IGNPAR(info->port.tty))
info->ignore_status_mask |= RXSTATUS_PARITY_ERROR | RXSTATUS_FRAMING_ERROR;
if (I_IGNBRK(info->tty)) {
if (I_IGNBRK(info->port.tty)) {
info->ignore_status_mask |= RXSTATUS_BREAK_RECEIVED;
/* If ignoring parity and break indicators, ignore
* overruns too. (For real raw support).
*/
if (I_IGNPAR(info->tty))
if (I_IGNPAR(info->port.tty))
info->ignore_status_mask |= RXSTATUS_OVERRUN;
}
......@@ -3113,32 +3107,32 @@ static void mgsl_close(struct tty_struct *tty, struct file * filp)
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):mgsl_close(%s) entry, count=%d\n",
__FILE__,__LINE__, info->device_name, info->count);
__FILE__,__LINE__, info->device_name, info->port.count);
if (!info->count)
if (!info->port.count)
return;
if (tty_hung_up_p(filp))
goto cleanup;
if ((tty->count == 1) && (info->count != 1)) {
if ((tty->count == 1) && (info->port.count != 1)) {
/*
* tty->count is 1 and the tty structure will be freed.
* info->count should be one in this case.
* info->port.count should be one in this case.
* if it's not, correct it so that the port is shutdown.
*/
printk("mgsl_close: bad refcount; tty->count is 1, "
"info->count is %d\n", info->count);
info->count = 1;
"info->port.count is %d\n", info->port.count);
info->port.count = 1;
}
info->count--;
info->port.count--;
/* if at least one open remaining, leave hardware active */
if (info->count)
if (info->port.count)
goto cleanup;
info->flags |= ASYNC_CLOSING;
info->port.flags |= ASYNC_CLOSING;
/* set tty->closing to notify line discipline to
* only process XON/XOFF characters. Only the N_TTY
......@@ -3155,7 +3149,7 @@ static void mgsl_close(struct tty_struct *tty, struct file * filp)
tty_wait_until_sent(tty, info->closing_wait);
}
if (info->flags & ASYNC_INITIALIZED)
if (info->port.flags & ASYNC_INITIALIZED)
mgsl_wait_until_sent(tty, info->timeout);
mgsl_flush_buffer(tty);
......@@ -3165,23 +3159,23 @@ static void mgsl_close(struct tty_struct *tty, struct file * filp)
shutdown(info);
tty->closing = 0;
info->tty = NULL;
info->port.tty = NULL;
if (info->blocked_open) {
if (info->port.blocked_open) {
if (info->close_delay) {
msleep_interruptible(jiffies_to_msecs(info->close_delay));
}
wake_up_interruptible(&info->open_wait);
wake_up_interruptible(&info->port.open_wait);
}
info->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
info->port.flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
wake_up_interruptible(&info->close_wait);
wake_up_interruptible(&info->port.close_wait);
cleanup:
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):mgsl_close(%s) exit, count=%d\n", __FILE__,__LINE__,
tty->driver->name, info->count);
tty->driver->name, info->port.count);
} /* end of mgsl_close() */
......@@ -3211,7 +3205,7 @@ static void mgsl_wait_until_sent(struct tty_struct *tty, int timeout)
if (mgsl_paranoia_check(info, tty->name, "mgsl_wait_until_sent"))
return;
if (!(info->flags & ASYNC_INITIALIZED))
if (!(info->port.flags & ASYNC_INITIALIZED))
goto exit;
orig_jiffies = jiffies;
......@@ -3283,11 +3277,11 @@ static void mgsl_hangup(struct tty_struct *tty)
mgsl_flush_buffer(tty);
shutdown(info);
info->count = 0;
info->flags &= ~ASYNC_NORMAL_ACTIVE;
info->tty = NULL;
info->port.count = 0;
info->port.flags &= ~ASYNC_NORMAL_ACTIVE;
info->port.tty = NULL;
wake_up_interruptible(&info->open_wait);
wake_up_interruptible(&info->port.open_wait);
} /* end of mgsl_hangup() */
......@@ -3319,7 +3313,7 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp,
if (filp->f_flags & O_NONBLOCK || tty->flags & (1 << TTY_IO_ERROR)){
/* nonblock mode is set or port is not enabled */
info->flags |= ASYNC_NORMAL_ACTIVE;
info->port.flags |= ASYNC_NORMAL_ACTIVE;
return 0;
}
......@@ -3328,25 +3322,25 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp,
/* Wait for 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
* mgsl_close() knows when to free things. We restore it upon
* exit, either normal or abnormal.
*/
retval = 0;
add_wait_queue(&info->open_wait, &wait);
add_wait_queue(&info->port.open_wait, &wait);
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):block_til_ready before block on %s count=%d\n",
__FILE__,__LINE__, tty->driver->name, info->count );
__FILE__,__LINE__, tty->driver->name, info->port.count );
spin_lock_irqsave(&info->irq_spinlock, flags);
if (!tty_hung_up_p(filp)) {
extra_count = true;
info->count--;
info->port.count--;
}
spin_unlock_irqrestore(&info->irq_spinlock, flags);
info->blocked_open++;
info->port.blocked_open++;
while (1) {
if (tty->termios->c_cflag & CBAUD) {
......@@ -3358,8 +3352,8 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp,
set_current_state(TASK_INTERRUPTIBLE);
if (tty_hung_up_p(filp) || !(info->flags & ASYNC_INITIALIZED)){
retval = (info->flags & ASYNC_HUP_NOTIFY) ?
if (tty_hung_up_p(filp) || !(info->port.flags & ASYNC_INITIALIZED)){
retval = (info->port.flags & ASYNC_HUP_NOTIFY) ?
-EAGAIN : -ERESTARTSYS;
break;
}
......@@ -3368,7 +3362,7 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp,
usc_get_serial_signals(info);
spin_unlock_irqrestore(&info->irq_spinlock,flags);
if (!(info->flags & ASYNC_CLOSING) &&
if (!(info->port.flags & ASYNC_CLOSING) &&
(do_clocal || (info->serial_signals & SerialSignal_DCD)) ) {
break;
}
......@@ -3380,24 +3374,24 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp,
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):block_til_ready blocking on %s count=%d\n",
__FILE__,__LINE__, tty->driver->name, info->count );
__FILE__,__LINE__, tty->driver->name, info->port.count );
schedule();
}
set_current_state(TASK_RUNNING);
remove_wait_queue(&info->open_wait, &wait);
remove_wait_queue(&info->port.open_wait, &wait);
if (extra_count)
info->count++;
info->blocked_open--;
info->port.count++;
info->port.blocked_open--;
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):block_til_ready after blocking on %s count=%d\n",
__FILE__,__LINE__, tty->driver->name, info->count );
__FILE__,__LINE__, tty->driver->name, info->port.count );
if (!retval)
info->flags |= ASYNC_NORMAL_ACTIVE;
info->port.flags |= ASYNC_NORMAL_ACTIVE;
return retval;
......@@ -3435,22 +3429,22 @@ static int mgsl_open(struct tty_struct *tty, struct file * filp)
return -ENODEV;
tty->driver_data = info;
info->tty = tty;
info->port.tty = tty;
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):mgsl_open(%s), old ref count = %d\n",
__FILE__,__LINE__,tty->driver->name, info->count);
__FILE__,__LINE__,tty->driver->name, info->port.count);
/* If port is closing, signal caller to try again */
if (tty_hung_up_p(filp) || info->flags & ASYNC_CLOSING){
if (info->flags & ASYNC_CLOSING)
interruptible_sleep_on(&info->close_wait);
retval = ((info->flags & ASYNC_HUP_NOTIFY) ?
if (tty_hung_up_p(filp) || info->port.flags & ASYNC_CLOSING){
if (info->port.flags & ASYNC_CLOSING)
interruptible_sleep_on(&info->port.close_wait);
retval = ((info->port.flags & ASYNC_HUP_NOTIFY) ?
-EAGAIN : -ERESTARTSYS);
goto cleanup;
}
info->tty->low_latency = (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
info->port.tty->low_latency = (info->port.flags & ASYNC_LOW_LATENCY) ? 1 : 0;
spin_lock_irqsave(&info->netlock, flags);
if (info->netcount) {
......@@ -3458,10 +3452,10 @@ static int mgsl_open(struct tty_struct *tty, struct file * filp)
spin_unlock_irqrestore(&info->netlock, flags);
goto cleanup;
}
info->count++;
info->port.count++;
spin_unlock_irqrestore(&info->netlock, flags);
if (info->count == 1) {
if (info->port.count == 1) {
/* 1st open on this device, init hardware */
retval = startup(info);
if (retval < 0)
......@@ -3484,9 +3478,9 @@ static int mgsl_open(struct tty_struct *tty, struct file * filp)
cleanup:
if (retval) {
if (tty->count == 1)
info->tty = NULL; /* tty layer will release tty struct */
if(info->count)
info->count--;
info->port.tty = NULL; /* tty layer will release tty struct */
if(info->port.count)
info->port.count--;
}
return retval;
......@@ -4337,8 +4331,7 @@ static struct mgsl_struct* mgsl_allocate_device(void)
info->max_frame_size = 4096;
info->close_delay = 5*HZ/10;
info->closing_wait = 30*HZ;
init_waitqueue_head(&info->open_wait);
init_waitqueue_head(&info->close_wait);
tty_port_init(&info->port);
init_waitqueue_head(&info->status_event_wait_q);
init_waitqueue_head(&info->event_wait_q);
spin_lock_init(&info->irq_spinlock);
......@@ -6575,7 +6568,7 @@ static bool mgsl_get_rx_frame(struct mgsl_struct *info)
unsigned int framesize = 0;
bool ReturnCode = false;
unsigned long flags;
struct tty_struct *tty = info->tty;
struct tty_struct *tty = info->port.tty;
bool return_frame = false;
/*
......@@ -6774,7 +6767,7 @@ static bool mgsl_get_raw_rx_frame(struct mgsl_struct *info)
unsigned int framesize = 0;
bool ReturnCode = false;
unsigned long flags;
struct tty_struct *tty = info->tty;
struct tty_struct *tty = info->port.tty;
/*
* current_rx_buffer points to the 1st buffer of the next available
......@@ -7711,7 +7704,7 @@ static int hdlcdev_attach(struct net_device *dev, unsigned short encoding,
unsigned short new_crctype;
/* return error if TTY interface open */
if (info->count)
if (info->port.count)
return -EBUSY;
switch (encoding)
......@@ -7808,7 +7801,7 @@ static int hdlcdev_open(struct net_device *dev)
/* arbitrate between network and tty opens */
spin_lock_irqsave(&info->netlock, flags);
if (info->count != 0 || info->netcount != 0) {
if (info->port.count != 0 || info->netcount != 0) {
printk(KERN_WARNING "%s: hdlc_open returning busy\n", dev->name);
spin_unlock_irqrestore(&info->netlock, flags);
return -EBUSY;
......@@ -7894,7 +7887,7 @@ static int hdlcdev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
printk("%s:hdlcdev_ioctl(%s)\n",__FILE__,dev->name);
/* return error if TTY interface open */
if (info->count)
if (info->port.count)
return -EBUSY;
if (cmd != SIOCWANDEV)
......
......@@ -244,11 +244,11 @@ struct _input_signal_events {
*/
struct slgt_info {
void *if_ptr; /* General purpose pointer (used by SPPP) */
struct tty_port port;
struct slgt_info *next_device; /* device list link */
int magic;
int flags;
char device_name[25];
struct pci_dev *pdev;
......@@ -260,23 +260,17 @@ struct slgt_info {
/* array of pointers to port contexts on this adapter */
struct slgt_info *port_array[SLGT_MAX_PORTS];
int count; /* count of opens */
int line; /* tty line instance number */
unsigned short close_delay;
unsigned short closing_wait; /* time to wait before closing */
struct mgsl_icount icount;
struct tty_struct *tty;
int timeout;
int x_char; /* xon/xoff character */
int blocked_open; /* # of blocked opens */
unsigned int read_status_mask;
unsigned int ignore_status_mask;
wait_queue_head_t open_wait;
wait_queue_head_t close_wait;
wait_queue_head_t status_event_wait_q;
wait_queue_head_t event_wait_q;
struct timer_list tx_timer;
......@@ -672,20 +666,20 @@ static int open(struct tty_struct *tty, struct file *filp)
}
tty->driver_data = info;
info->tty = tty;
info->port.tty = tty;
DBGINFO(("%s open, old ref count = %d\n", info->device_name, info->count));
DBGINFO(("%s open, old ref count = %d\n", info->device_name, info->port.count));
/* If port is closing, signal caller to try again */
if (tty_hung_up_p(filp) || info->flags & ASYNC_CLOSING){
if (info->flags & ASYNC_CLOSING)
interruptible_sleep_on(&info->close_wait);
retval = ((info->flags & ASYNC_HUP_NOTIFY) ?
if (tty_hung_up_p(filp) || info->port.flags & ASYNC_CLOSING){
if (info->port.flags & ASYNC_CLOSING)
interruptible_sleep_on(&info->port.close_wait);
retval = ((info->port.flags & ASYNC_HUP_NOTIFY) ?
-EAGAIN : -ERESTARTSYS);
goto cleanup;
}
info->tty->low_latency = (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
info->port.tty->low_latency = (info->port.flags & ASYNC_LOW_LATENCY) ? 1 : 0;
spin_lock_irqsave(&info->netlock, flags);
if (info->netcount) {
......@@ -693,10 +687,10 @@ static int open(struct tty_struct *tty, struct file *filp)
spin_unlock_irqrestore(&info->netlock, flags);
goto cleanup;
}
info->count++;
info->port.count++;
spin_unlock_irqrestore(&info->netlock, flags);
if (info->count == 1) {
if (info->port.count == 1) {
/* 1st open on this device, init hardware */
retval = startup(info);
if (retval < 0)
......@@ -714,9 +708,9 @@ static int open(struct tty_struct *tty, struct file *filp)
cleanup:
if (retval) {
if (tty->count == 1)
info->tty = NULL; /* tty layer will release tty struct */
if(info->count)
info->count--;
info->port.tty = NULL; /* tty layer will release tty struct */
if(info->port.count)
info->port.count--;
}
DBGINFO(("%s open rc=%d\n", info->device_name, retval));
......@@ -729,32 +723,32 @@ static void close(struct tty_struct *tty, struct file *filp)
if (sanity_check(info, tty->name, "close"))
return;
DBGINFO(("%s close entry, count=%d\n", info->device_name, info->count));
DBGINFO(("%s close entry, count=%d\n", info->device_name, info->port.count));
if (!info->count)
if (!info->port.count)
return;
if (tty_hung_up_p(filp))
goto cleanup;
if ((tty->count == 1) && (info->count != 1)) {
if ((tty->count == 1) && (info->port.count != 1)) {
/*
* tty->count is 1 and the tty structure will be freed.
* info->count should be one in this case.
* info->port.count should be one in this case.
* if it's not, correct it so that the port is shutdown.
*/
DBGERR(("%s close: bad refcount; tty->count=1, "
"info->count=%d\n", info->device_name, info->count));
info->count = 1;
"info->port.count=%d\n", info->device_name, info->port.count));
info->port.count = 1;
}
info->count--;
info->port.count--;
/* if at least one open remaining, leave hardware active */
if (info->count)
if (info->port.count)
goto cleanup;
info->flags |= ASYNC_CLOSING;
info->port.flags |= ASYNC_CLOSING;
/* set tty->closing to notify line discipline to
* only process XON/XOFF characters. Only the N_TTY
......@@ -769,7 +763,7 @@ static void close(struct tty_struct *tty, struct file *filp)
tty_wait_until_sent(tty, info->closing_wait);
}
if (info->flags & ASYNC_INITIALIZED)
if (info->port.flags & ASYNC_INITIALIZED)
wait_until_sent(tty, info->timeout);
flush_buffer(tty);
tty_ldisc_flush(tty);
......@@ -777,21 +771,21 @@ static void close(struct tty_struct *tty, struct file *filp)
shutdown(info);
tty->closing = 0;
info->tty = NULL;
info->port.tty = NULL;
if (info->blocked_open) {
if (info->port.blocked_open) {
if (info->close_delay) {
msleep_interruptible(jiffies_to_msecs(info->close_delay));
}
wake_up_interruptible(&info->open_wait);
wake_up_interruptible(&info->port.open_wait);
}
info->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
info->port.flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
wake_up_interruptible(&info->close_wait);
wake_up_interruptible(&info->port.close_wait);
cleanup:
DBGINFO(("%s close exit, count=%d\n", tty->driver->name, info->count));
DBGINFO(("%s close exit, count=%d\n", tty->driver->name, info->port.count));
}
static void hangup(struct tty_struct *tty)
......@@ -805,11 +799,11 @@ static void hangup(struct tty_struct *tty)
flush_buffer(tty);
shutdown(info);