if (tty_hung_up_p(filp) ||
            (info->port.flags & ASYNC_CLOSING)) {
                if (info->port.flags & ASYNC_CLOSING)
-                       interruptible_sleep_on(&info->close_wait);
+                       interruptible_sleep_on(&info->port.close_wait);
 #ifdef MODEM_DO_RESTART
                if (info->port.flags & ASYNC_HUP_NOTIFY)
                        return -EAGAIN;
         * exit, either normal or abnormal.
         */
        retval = 0;
-       add_wait_queue(&info->open_wait, &wait);
+       add_wait_queue(&info->port.open_wait, &wait);
 #ifdef ISDN_DEBUG_MODEM_OPEN
        printk(KERN_DEBUG "isdn_tty_block_til_ready before block: ttyi%d, count = %d\n",
               info->line, info->count);
                schedule();
        }
        current->state = TASK_RUNNING;
-       remove_wait_queue(&info->open_wait, &wait);
+       remove_wait_queue(&info->port.open_wait, &wait);
        if (!tty_hung_up_p(filp))
                info->count++;
        info->blocked_open--;
        tty->closing = 0;
        if (info->blocked_open) {
                msleep_interruptible(500);
-               wake_up_interruptible(&info->open_wait);
+               wake_up_interruptible(&info->port.open_wait);
        }
        info->port.flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING);
-       wake_up_interruptible(&info->close_wait);
+       wake_up_interruptible(&info->port.close_wait);
 #ifdef ISDN_DEBUG_MODEM_OPEN
        printk(KERN_DEBUG "isdn_tty_close normal exit\n");
 #endif
        info->count = 0;
        info->port.flags &= ~ASYNC_NORMAL_ACTIVE;
        info->tty = NULL;
-       wake_up_interruptible(&info->open_wait);
+       wake_up_interruptible(&info->port.open_wait);
 }
 
 /* This routine initializes all emulator-data.
                info->x_char = 0;
                info->count = 0;
                info->blocked_open = 0;
-               init_waitqueue_head(&info->open_wait);
-               init_waitqueue_head(&info->close_wait);
                info->isdn_driver = -1;
                info->isdn_channel = -1;
                info->drv_index = -1;
                         */
                        if (info->blocked_open &&
                            (info->emu.mdmreg[REG_DCD] & BIT_DCD)) {
-                               wake_up_interruptible(&info->open_wait);
+                               wake_up_interruptible(&info->port.open_wait);
                        }
 
                        /* Schedule CONNECT-Message to any tty