[PATCH] 8139cp - add netpoll support

[Steffen Klassert <klassert@xxxxxxxxxxxxxxxxxxxxxxxxx>]

Patch adds netpoll support to the 8139cp driver.
The patch needs some tests because I have no NIC of this type for testing.

Applies against linux-2.6.9-rc2-mm3

Signed-off-by: Steffen Klassert <klassert@xxxxxxxxxxxxxxxxxxxxxxxxx>

--  

diff -urN vanilla-2.6.9-rc2-mm3/drivers/net/8139cp.c 
linux-2.6.9-rc2-mm3/drivers/net/8139cp.c
--- vanilla-2.6.9-rc2-mm3/drivers/net/8139cp.c  Sat Sep 25 12:00:58 2004
+++ linux-2.6.9-rc2-mm3/drivers/net/8139cp.c    Mon Sep 27 11:55:04 2004
@@ -398,6 +398,9 @@ struct cp_private {
 static void __cp_set_rx_mode (struct net_device *dev);
 static void cp_tx (struct cp_private *cp);
 static void cp_clean_rings (struct cp_private *cp);
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void cp_poll_controller(struct net_device *dev);
+#endif
 
 static struct pci_device_id cp_pci_tbl[] = {
        { PCI_VENDOR_ID_REALTEK, PCI_DEVICE_ID_REALTEK_8139,
@@ -690,6 +693,19 @@ cp_interrupt (int irq, void *dev_instanc
        return IRQ_HANDLED;
 }
 
+#ifdef CONFIG_NET_POLL_CONTROLLER
+/*
+ * Polling receive - used by netconsole and other diagnostic tools
+ * to allow network i/o with interrupts disabled.
+ */
+static void cp_poll_controller(struct net_device *dev)
+{
+       disable_irq(dev->irq);
+       cp_interrupt(dev->irq, dev, NULL);
+       enable_irq(dev->irq);
+}
+#endif
+
 static void cp_tx (struct cp_private *cp)
 {
        unsigned tx_head = cp->tx_head;
@@ -1761,6 +1777,9 @@ static int cp_init_one (struct pci_dev *
        dev->get_stats = cp_get_stats;
        dev->do_ioctl = cp_ioctl;
        dev->poll = cp_rx_poll;
+#ifdef CONFIG_NET_POLL_CONTROLLER
+       dev->poll_controller = cp_poll_controller;
+#endif
        dev->weight = 16;       /* arbitrary? from NAPI_HOWTO.txt. */
 #ifdef BROKEN
        dev->change_mtu = cp_change_mtu;