185 	struct netpoll_info *ni = rcu_dereference_bh(dev->npinfo);  in netpoll_poll_dev()  local
192 	if (!ni || down_trylock(&ni->dev_lock))  in netpoll_poll_dev()
199 		up(&ni->dev_lock);  in netpoll_poll_dev()
209 	up(&ni->dev_lock);  in netpoll_poll_dev()
217 	struct netpoll_info *ni;  in netpoll_poll_disable()  local
220 	ni = rtnl_dereference(dev->npinfo);  in netpoll_poll_disable()
221 	if (ni)  in netpoll_poll_disable()
222 		down(&ni->dev_lock);  in netpoll_poll_disable()
227 	struct netpoll_info *ni;  in netpoll_poll_enable()  local
229 	ni = rtnl_dereference(dev->npinfo);  in netpoll_poll_enable()
230 	if (ni)  in netpoll_poll_enable()
231 		up(&ni->dev_lock);  in netpoll_poll_enable()