[PATCH] sundance: solve host error problem in low performance embedded system when...

[safe/jmp/linux-2.6] / drivers / net / ibmveth.c

diff --git a/drivers/net/ibmveth.c b/drivers/net/ibmveth.c
index 16f3faa..44c9f99 100644 (file)
--- a/drivers/net/ibmveth.c
+++ b/drivers/net/ibmveth.c
@@ -93,7 +93,7 @@ static void ibmveth_proc_register_driver(void);
 static void ibmveth_proc_unregister_driver(void);
 static void ibmveth_proc_register_adapter(struct ibmveth_adapter *adapter);
 static void ibmveth_proc_unregister_adapter(struct ibmveth_adapter *adapter);
-static irqreturn_t ibmveth_interrupt(int irq, void *dev_instance, struct pt_regs *regs);
+static irqreturn_t ibmveth_interrupt(int irq, void *dev_instance);
 static inline void ibmveth_rxq_harvest_buffer(struct ibmveth_adapter *adapter);
 static struct kobj_type ktype_veth_pool;
 
@@ -212,8 +212,8 @@ static void ibmveth_replenish_buffer_pool(struct ibmveth_adapter *adapter, struc
                        break;
                }
 
-               free_index = pool->consumer_index++ % pool->size;
-               pool->consumer_index = free_index;
+               free_index = pool->consumer_index;
+               pool->consumer_index = (pool->consumer_index + 1) % pool->size;
                index = pool->free_map[free_index];
 
                ibmveth_assert(index != IBM_VETH_INVALID_MAP);
@@ -329,8 +329,10 @@ static void ibmveth_remove_buffer_from_pool(struct ibmveth_adapter *adapter, u64
                         adapter->rx_buff_pool[pool].buff_size,
                         DMA_FROM_DEVICE);
 
-       free_index = adapter->rx_buff_pool[pool].producer_index++ % adapter->rx_buff_pool[pool].size;
-       adapter->rx_buff_pool[pool].producer_index = free_index;
+       free_index = adapter->rx_buff_pool[pool].producer_index;
+       adapter->rx_buff_pool[pool].producer_index
+               = (adapter->rx_buff_pool[pool].producer_index + 1)
+               % adapter->rx_buff_pool[pool].size;
        adapter->rx_buff_pool[pool].free_map[free_index] = index;
 
        mb();
@@ -570,7 +572,7 @@ static int ibmveth_open(struct net_device *netdev)
        }
 
        ibmveth_debug_printk("initial replenish cycle\n");
-       ibmveth_interrupt(netdev->irq, netdev, NULL);
+       ibmveth_interrupt(netdev->irq, netdev);
 
        netif_start_queue(netdev);
 
@@ -843,7 +845,7 @@ static int ibmveth_poll(struct net_device *netdev, int *budget)
        return 0;
 }
 
-static irqreturn_t ibmveth_interrupt(int irq, void *dev_instance, struct pt_regs *regs)
+static irqreturn_t ibmveth_interrupt(int irq, void *dev_instance)
 {
        struct net_device *netdev = dev_instance;
        struct ibmveth_adapter *adapter = netdev->priv;
@@ -936,7 +938,7 @@ static int ibmveth_change_mtu(struct net_device *dev, int new_mtu)
 static void ibmveth_poll_controller(struct net_device *dev)
 {
        ibmveth_replenish_task(dev->priv);
-       ibmveth_interrupt(dev->irq, dev, NULL);
+       ibmveth_interrupt(dev->irq, dev);
 }
 #endif
 
@@ -1303,7 +1305,7 @@ const char * buf, size_t count)
        }
 
        /* kick the interrupt handler to allocate/deallocate pools */
-       ibmveth_interrupt(netdev->irq, netdev, NULL);
+       ibmveth_interrupt(netdev->irq, netdev);
        return count;
 }