diff options
| -rw-r--r-- | drivers/net/natsemi.c | 24 |
1 files changed, 19 insertions, 5 deletions
diff --git a/drivers/net/natsemi.c b/drivers/net/natsemi.c index 5c57433cb306..c6172a77a6d7 100644 --- a/drivers/net/natsemi.c +++ b/drivers/net/natsemi.c @@ -2024,6 +2024,7 @@ static int start_tx(struct sk_buff *skb, struct net_device *dev) struct netdev_private *np = netdev_priv(dev); void __iomem * ioaddr = ns_ioaddr(dev); unsigned entry; + unsigned long flags; /* Note: Ordering is important here, set the field with the "ownership" bit last, and only then increment cur_tx. */ @@ -2037,7 +2038,7 @@ static int start_tx(struct sk_buff *skb, struct net_device *dev) np->tx_ring[entry].addr = cpu_to_le32(np->tx_dma[entry]); - spin_lock_irq(&np->lock); + spin_lock_irqsave(&np->lock, flags); if (!np->hands_off) { np->tx_ring[entry].cmd_status = cpu_to_le32(DescOwn | skb->len); @@ -2056,7 +2057,7 @@ static int start_tx(struct sk_buff *skb, struct net_device *dev) dev_kfree_skb_irq(skb); np->stats.tx_dropped++; } - spin_unlock_irq(&np->lock); + spin_unlock_irqrestore(&np->lock, flags); dev->trans_start = jiffies; @@ -2222,6 +2223,8 @@ static void netdev_rx(struct net_device *dev, int *work_done, int work_to_do) pkt_len = (desc_status & DescSizeMask) - 4; if ((desc_status&(DescMore|DescPktOK|DescRxLong)) != DescPktOK){ if (desc_status & DescMore) { + unsigned long flags; + if (netif_msg_rx_err(np)) printk(KERN_WARNING "%s: Oversized(?) Ethernet " @@ -2236,12 +2239,12 @@ static void netdev_rx(struct net_device *dev, int *work_done, int work_to_do) * reset procedure documented in * AN-1287. */ - spin_lock_irq(&np->lock); + spin_lock_irqsave(&np->lock, flags); reset_rx(dev); reinit_rx(dev); writel(np->ring_dma, ioaddr + RxRingPtr); check_link(dev); - spin_unlock_irq(&np->lock); + spin_unlock_irqrestore(&np->lock, flags); /* We'll enable RX on exit from this * function. */ @@ -2396,8 +2399,19 @@ static struct net_device_stats *get_stats(struct net_device *dev) #ifdef CONFIG_NET_POLL_CONTROLLER static void natsemi_poll_controller(struct net_device *dev) { + struct netdev_private *np = netdev_priv(dev); + disable_irq(dev->irq); - intr_handler(dev->irq, dev); + + /* + * A real interrupt might have already reached us at this point + * but NAPI might still haven't called us back. As the interrupt + * status register is cleared by reading, we should prevent an + * interrupt loss in this case... + */ + if (!np->intr_status) + intr_handler(dev->irq, dev); + enable_irq(dev->irq); } #endif |