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ibmveth: Remove integer divide caused by modulus 

Replace some modulus operators with an increment and compare to avoid
an integer divide.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Santiago Leon <santil@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Santiago Leon 2010-09-03 18:28:04 +00:00 committed by David S. Miller
parent a5d31e0faf
commit a613f58148
1 changed files with 7 additions and 4 deletions
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11
drivers/net/ibmveth.c
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@ -252,7 +252,9 @@ static void ibmveth_replenish_buffer_pool(struct ibmveth_adapter *adapter, struc
}
free_index = pool->consumer_index;
pool->consumer_index = (pool->consumer_index + 1) % pool->size;
pool->consumer_index++;
if (pool->consumer_index >= pool->size)
pool->consumer_index = 0;
index = pool->free_map[free_index];
ibmveth_assert(index != IBM_VETH_INVALID_MAP);
@ -377,9 +379,10 @@ static void ibmveth_remove_buffer_from_pool(struct ibmveth_adapter *adapter, u64
DMA_FROM_DEVICE);
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].producer_index++;
if (adapter->rx_buff_pool[pool].producer_index >=
adapter->rx_buff_pool[pool].size)
adapter->rx_buff_pool[pool].producer_index = 0;
adapter->rx_buff_pool[pool].free_map[free_index] = index;
mb();