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mv643xx_eth: calculate descriptor pointer only once in rxq_refill()

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Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Lennert Buytenhek 2008-11-20 03:59:04 -08:00 committed by David S. Miller
parent f61e554776
commit 5377152264
1 changed files with 7 additions and 5 deletions
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12
drivers/net/mv643xx_eth.c
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@ -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();
/*