[netdrvr dmfe] netpoll support

drivers/net/tulip/dmfe.c

@@ -299,6 +299,9 @@ static void dmfe_set_filter_mode(struct DEVICE *);
 static struct ethtool_ops netdev_ethtool_ops;
 static u16 read_srom_word(long ,int);
 static irqreturn_t dmfe_interrupt(int , void *, struct pt_regs *);
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void poll_dmfe (struct net_device *dev);
+#endif
 static void dmfe_descriptor_init(struct dmfe_board_info *, unsigned long);
 static void allocate_rx_buffer(struct dmfe_board_info *);
 static void update_cr6(u32, unsigned long);
@@ -417,6 +420,9 @@ static int __devinit dmfe_init_one (struct pci_dev *pdev,
 	dev->stop = &dmfe_stop;
 	dev->get_stats = &dmfe_get_stats;
 	dev->set_multicast_list = &dmfe_set_filter_mode;
+#ifdef CONFIG_NET_POLL_CONTROLLER
+	dev->poll_controller = &poll_dmfe;
+#endif
 	dev->ethtool_ops = &netdev_ethtool_ops;
 	spin_lock_init(&db->lock);
 
@@ -791,6 +797,23 @@ static irqreturn_t dmfe_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 }
 
 
+#ifdef CONFIG_NET_POLL_CONTROLLER
+/*
+ * Polling 'interrupt' - used by things like netconsole to send skbs
+ * without having to re-enable interrupts. It's not called while
+ * the interrupt routine is executing.
+ */
+
+static void poll_dmfe (struct net_device *dev)
+{
+	/* disable_irq here is not very nice, but with the lockless
+	   interrupt handler we have no other choice. */
+	disable_irq(dev->irq);
+	dmfe_interrupt (dev->irq, dev, NULL);
+	enable_irq(dev->irq);
+}
+#endif
+
 /*
  *	Free TX resource after TX complete
  */