157 	struct cisco_state *st = state(hdlc);  in cisco_rx()  local
222 			spin_lock(&st->lock);  in cisco_rx()
223 			st->rxseq = ntohl(cisco_data->par1);  in cisco_rx()
225 			if (ack && (ack == st->txseq ||  in cisco_rx()
227 				    ack == st->txseq - 1)) {  in cisco_rx()
228 				st->last_poll = jiffies;  in cisco_rx()
229 				if (!st->up) {  in cisco_rx()
238 					st->up = 1;  in cisco_rx()
241 			spin_unlock(&st->lock);  in cisco_rx()
264 	struct cisco_state *st = state(hdlc);  in cisco_timer()  local
266 	spin_lock(&st->lock);  in cisco_timer()
267 	if (st->up &&  in cisco_timer()
268 	    time_after(jiffies, st->last_poll + st->settings.timeout * HZ)) {  in cisco_timer()
269 		st->up = 0;  in cisco_timer()
274 	cisco_keepalive_send(dev, CISCO_KEEPALIVE_REQ, htonl(++st->txseq),  in cisco_timer()
275 			     htonl(st->rxseq));  in cisco_timer()
276 	spin_unlock(&st->lock);  in cisco_timer()
278 	st->timer.expires = jiffies + st->settings.interval * HZ;  in cisco_timer()
279 	st->timer.function = cisco_timer;  in cisco_timer()
280 	st->timer.data = arg;  in cisco_timer()
281 	add_timer(&st->timer);  in cisco_timer()
289 	struct cisco_state *st = state(hdlc);  in cisco_start()  local
292 	spin_lock_irqsave(&st->lock, flags);  in cisco_start()
293 	st->up = st->txseq = st->rxseq = 0;  in cisco_start()
294 	spin_unlock_irqrestore(&st->lock, flags);  in cisco_start()
296 	init_timer(&st->timer);  in cisco_start()
297 	st->timer.expires = jiffies + HZ; /* First poll after 1 s */  in cisco_start()
298 	st->timer.function = cisco_timer;  in cisco_start()
299 	st->timer.data = (unsigned long)dev;  in cisco_start()
300 	add_timer(&st->timer);  in cisco_start()
308 	struct cisco_state *st = state(hdlc);  in cisco_stop()  local
311 	del_timer_sync(&st->timer);  in cisco_stop()
313 	spin_lock_irqsave(&st->lock, flags);  in cisco_stop()
315 	st->up = st->txseq = 0;  in cisco_stop()
316 	spin_unlock_irqrestore(&st->lock, flags);  in cisco_stop()