wr_nic: add comment to function wrn_ep_open in endpoint.c

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

kernel/wr_nic/endpoint.c

@@ -216,6 +216,8 @@ int wrn_ep_open(struct net_device *dev)
 
 	/* Prepare the timer for link-up notifications */
 	setup_timer(&ep->ep_link_timer, wrn_ep_check_link, timerarg);
+	/* Not on spec. On spec this part of the function is never reached
+	 * due to return in if(WR_IS_NODE) */
 	mod_timer(&ep->ep_link_timer, jiffies + WRN_LINK_POLL_INTERVAL);
 	return 0;
 }