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>
diff --git a/drivers/net/mv643xx_eth.c b/drivers/net/mv643xx_eth.c
index d56724a..b56fdf0 100644
--- a/drivers/net/mv643xx_eth.c
+++ b/drivers/net/mv643xx_eth.c
@@ -593,6 +593,7 @@
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 @@
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();
/*