/*
* This routine is called whenever a serial port is opened. It
* enables interrupts for a serial port, linking in its async structure into
* the IRQ chain. It also performs the serial-specific
* initialization for the tty structure.
*/
static int
ctc_tty_open(struct tty_struct *tty, struct file *filp)
{
ctc_tty_info *info;
unsigned long saveflags;
int retval,
line;
line = MINOR(tty->device) - tty->driver.minor_start;
if (line < 0 || line > CTC_TTY_MAX_DEVICES)
return -ENODEV;
info = &driver->info[line];
if (ctc_tty_paranoia_check(info, tty->device, "ctc_tty_open"))
return -ENODEV;
if (!info->netdev)
return -ENODEV;
#ifdef CTC_DEBUG_MODEM_OPEN
printk(KERN_DEBUG "ctc_tty_open %s%d, count = %d\n", tty->driver.name,
info->line, info->count);
#endif
spin_lock_irqsave(&ctc_tty_lock, saveflags);
info->count++;
tty->driver_data = info;
info->tty = tty;
spin_unlock_irqrestore(&ctc_tty_lock, saveflags);
/*
* Start up serial port
*/
retval = ctc_tty_startup(info);
if (retval) {
#ifdef CTC_DEBUG_MODEM_OPEN
printk(KERN_DEBUG "ctc_tty_open return after startup\n");
#endif
return retval;
}
retval = ctc_tty_block_til_ready(tty, filp, info);
if (retval) {
#ifdef CTC_DEBUG_MODEM_OPEN
printk(KERN_DEBUG "ctc_tty_open return after ctc_tty_block_til_ready \n");
#endif
return retval;
}
if ((info->count == 1) && (info->flags & CTC_ASYNC_SPLIT_TERMIOS)) {
*tty->termios = info->normal_termios;
ctc_tty_change_speed(info);
}
#ifdef CTC_DEBUG_MODEM_OPEN
printk(KERN_DEBUG "ctc_tty_open %s%d successful...\n", CTC_TTY_NAME, info->line);
#endif
return 0;
}
/*
* This routine is called whenever a serial port is opened. It
* enables interrupts for a serial port, linking in its async structure into
* the IRQ chain. It also performs the serial-specific
* initialization for the tty structure.
*/
static int
ctc_tty_open(struct tty_struct *tty, struct file *filp)
{
ctc_tty_info *info;
unsigned long saveflags;
int retval,
line;
DBF_TEXT(trace, 3, __FUNCTION__);
line = tty->index;
if (line < 0 || line > CTC_TTY_MAX_DEVICES)
return -ENODEV;
info = &driver->info[line];
if (ctc_tty_paranoia_check(info, tty->name, "ctc_tty_open"))
return -ENODEV;
if (!info->netdev)
return -ENODEV;
#ifdef CTC_DEBUG_MODEM_OPEN
printk(KERN_DEBUG "ctc_tty_open %s, count = %d\n", tty->name,
info->count);
#endif
spin_lock_irqsave(&ctc_tty_lock, saveflags);
info->count++;
tty->driver_data = info;
info->tty = tty;
spin_unlock_irqrestore(&ctc_tty_lock, saveflags);
/*
* Start up serial port
*/
retval = ctc_tty_startup(info);
if (retval) {
#ifdef CTC_DEBUG_MODEM_OPEN
printk(KERN_DEBUG "ctc_tty_open return after startup\n");
#endif
return retval;
}
retval = ctc_tty_block_til_ready(tty, filp, info);
if (retval) {
#ifdef CTC_DEBUG_MODEM_OPEN
printk(KERN_DEBUG "ctc_tty_open return after ctc_tty_block_til_ready \n");
#endif
return retval;
}
#ifdef CTC_DEBUG_MODEM_OPEN
printk(KERN_DEBUG "ctc_tty_open %s successful...\n", tty->name);
#endif
return 0;
}