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authorLennert Buytenhek <buytenh@marvell.com>2008-11-20 03:59:04 -0800
committerDavid S. Miller <davem@davemloft.net>2008-11-20 03:59:04 -0800
commit537715226408b83c36b0688a1fb718f572d4dbe6 (patch)
tree0b37f0b428f0ac87186e5d9763478ce55005b5b2
parentf61e5547763338b793ed291f3de3130216d00430 (diff)
mv643xx_eth: calculate descriptor pointer only once in rxq_refill()
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--drivers/net/mv643xx_eth.c12
1 files changed, 7 insertions, 5 deletions
diff --git a/drivers/net/mv643xx_eth.c b/drivers/net/mv643xx_eth.c
index d56724add17..b56fdf0dc87 100644
--- a/drivers/net/mv643xx_eth.c
+++ b/drivers/net/mv643xx_eth.c
@@ -593,6 +593,7 @@ static int rxq_refill(struct rx_queue *rxq, int budget)
struct sk_buff *skb;
int unaligned;
int rx;
+ struct rx_desc *rx_desc;
skb = __skb_dequeue(&mp->rx_recycle);
if (skb == NULL)
@@ -615,13 +616,14 @@ static int rxq_refill(struct rx_queue *rxq, int budget)
if (rxq->rx_used_desc == rxq->rx_ring_size)
rxq->rx_used_desc = 0;
- rxq->rx_desc_area[rx].buf_ptr = dma_map_single(NULL, skb->data,
- mp->skb_size, DMA_FROM_DEVICE);
- rxq->rx_desc_area[rx].buf_size = mp->skb_size;
+ rx_desc = rxq->rx_desc_area + rx;
+
+ rx_desc->buf_ptr = dma_map_single(NULL, skb->data,
+ mp->skb_size, DMA_FROM_DEVICE);
+ rx_desc->buf_size = mp->skb_size;
rxq->rx_skb[rx] = skb;
wmb();
- rxq->rx_desc_area[rx].cmd_sts = BUFFER_OWNED_BY_DMA |
- RX_ENABLE_INTERRUPT;
+ rx_desc->cmd_sts = BUFFER_OWNED_BY_DMA | RX_ENABLE_INTERRUPT;
wmb();
/*