[PATCH] ibmveth: Fix index increment calculation

[pandora-kernel.git] / drivers / net / ibmveth.c

diff --git a/drivers/net/ibmveth.c b/drivers/net/ibmveth.c
index 2802db2..44c9f99 100644 (file)
--- a/drivers/net/ibmveth.c
+++ b/drivers/net/ibmveth.c
@@ -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();