diff options
Diffstat (limited to 'drivers/net/macb.c')
| -rw-r--r-- | drivers/net/macb.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/drivers/net/macb.c b/drivers/net/macb.c index e82aee41d77e..5b5c25368d1e 100644 --- a/drivers/net/macb.c +++ b/drivers/net/macb.c @@ -599,6 +599,21 @@ static irqreturn_t macb_interrupt(int irq, void *dev_id) 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 macb_poll_controller(struct net_device *dev) +{ + unsigned long flags; + + local_irq_save(flags); + macb_interrupt(dev->irq, dev); + local_irq_restore(flags); +} +#endif + static int macb_start_xmit(struct sk_buff *skb, struct net_device *dev) { struct macb *bp = netdev_priv(dev); @@ -630,7 +645,7 @@ static int macb_start_xmit(struct sk_buff *skb, struct net_device *dev) "BUG! Tx Ring full when queue awake!\n"); dev_dbg(&bp->pdev->dev, "tx_head = %u, tx_tail = %u\n", bp->tx_head, bp->tx_tail); - return 1; + return NETDEV_TX_BUSY; } entry = bp->tx_head; @@ -1094,6 +1109,9 @@ static const struct net_device_ops macb_netdev_ops = { .ndo_validate_addr = eth_validate_addr, .ndo_change_mtu = eth_change_mtu, .ndo_set_mac_address = eth_mac_addr, +#ifdef CONFIG_NET_POLL_CONTROLLER + .ndo_poll_controller = macb_poll_controller, +#endif }; static int __init macb_probe(struct platform_device *pdev) |