char/specialix: replace

@@ -1452,8 +1452,7 @@ static void sx_close(struct tty_struct *
 		 */
 		timeout = jiffies+HZ;
 		while(port->IER & IER_TXEMPTY) {
-			current->state = TASK_INTERRUPTIBLE;
- 			schedule_timeout(port->timeout);
+			msleep_interruptible(jiffies_to_msecs(port->timeout));
 			if (time_after(jiffies, timeout)) {
 				printk (KERN_INFO "Timeout waiting for close\n");
 				break;

@@ -1471,8 +1470,7 @@ static void sx_close(struct tty_struct *
 	port->tty = NULL;
 	if (port->blocked_open) {
 		if (port->close_delay) {
-			current->state = TASK_INTERRUPTIBLE;
-			schedule_timeout(port->close_delay);
+			msleep_interruptible(jiffies_to_msecs(port->close_delay));
 		}
 		wake_up_interruptible(&port->open_wait);
 	}