/* pc_stop and pc_start provide software flow control to the routine and the pc_ioctl routine.  */
static void pc_stop(struct tty_struct *)
/* pc_stop and pc_start provide software flow control to the routine and the pc_ioctl routine.  */
static void pc_stop(struct tty_struct *)
{
	struct channel *ch;
	unsigned long flags;
	ch = verifyChannel(tty);
	if (ch != NULL) {
		spin_lock_irqsave(&epca_lock, flags);
		if ((ch->statusflags & TXSTOPPED) == 0) {
			globalwinon(ch);
			fepcmd(ch, PAUSETX, 0, 0, 0, 0);
			ch->statusflags |= TXSTOPPED;
			memoff(ch);
		}
		spin_unlock_irqrestore(&epca_lock, flags);
	}
}