[PATCH] 8139cp - add netpoll support

  
  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@mathematik.tu-chemnitz.de>

1 files changed, 19 insertions, 0 deletions

diff --git a/drivers/net/8139cp.c b/drivers/net/8139cp.c
index 18946a56d9b5..050d7602bbe9 100644
--- a/drivers/net/8139cp.c
+++ b/drivers/net/8139cp.c
@@ -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,
@@ -692,6 +695,19 @@ cp_interrupt (int irq, void *dev_instance, struct pt_regs *regs)
         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;
@@ -1763,6 +1779,9 @@ static int cp_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
         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;