Add poll controller function for velocity nic.

Signed-off-by: Amit Uttamchandani <auttamchand...@logicube.com>
---
 drivers/net/ethernet/via/via-velocity.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/drivers/net/ethernet/via/via-velocity.c 
b/drivers/net/ethernet/via/via-velocity.c
index 1d6dc41..ef77631 100644
--- a/drivers/net/ethernet/via/via-velocity.c
+++ b/drivers/net/ethernet/via/via-velocity.c
@@ -2376,6 +2376,23 @@ out_0:
        return ret;
 }
 
+#ifdef CONFIG_NET_POLL_CONTROLLER
+/**
+ *  velocity_poll_controller           -       Velocity Poll controller 
function
+ *  @dev: network device
+ *
+ *
+ *  Used by NETCONSOLE and other diagnostic tools to allow network I/P
+ *  with interrupts disabled.
+ */
+static void velocity_poll_controller(struct net_device *dev)
+{
+       disable_irq(dev->irq);
+       velocity_intr(dev->irq, dev);
+       enable_irq(dev->irq);
+}
+#endif
+
 /**
  *     velocity_mii_ioctl              -       MII ioctl handler
  *     @dev: network device
@@ -2641,6 +2658,9 @@ static const struct net_device_ops velocity_netdev_ops = {
        .ndo_do_ioctl           = velocity_ioctl,
        .ndo_vlan_rx_add_vid    = velocity_vlan_rx_add_vid,
        .ndo_vlan_rx_kill_vid   = velocity_vlan_rx_kill_vid,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+       .ndo_poll_controller = velocity_poll_controller,
+#endif
 };
 
 /**
-- 
1.8.0.rc0

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