174 	struct netpoll_info *ni = rcu_dereference_bh(dev->npinfo);  in netpoll_poll_dev()  local
181 	if (!ni || down_trylock(&ni->dev_lock))  in netpoll_poll_dev()
185 		up(&ni->dev_lock);  in netpoll_poll_dev()
195 	up(&ni->dev_lock);  in netpoll_poll_dev()
203 	struct netpoll_info *ni;  in netpoll_poll_disable()  local
207 	ni = srcu_dereference(dev->npinfo, &netpoll_srcu);  in netpoll_poll_disable()
208 	if (ni)  in netpoll_poll_disable()
209 		down(&ni->dev_lock);  in netpoll_poll_disable()
216 	struct netpoll_info *ni;  in netpoll_poll_enable()  local
218 	ni = rcu_dereference(dev->npinfo);  in netpoll_poll_enable()
219 	if (ni)  in netpoll_poll_enable()
220 		up(&ni->dev_lock);  in netpoll_poll_enable()