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| author | FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> | 2010-06-17 08:56:05 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-06-17 08:56:05 -0700 |
| commit | aabef8b240880439b91574c9a9e33dcc44bfd8c7 (patch) | |
| tree | 80cc9175da9ca00d179ac83b9039fa9ed6e1be14 | |
| parent | db176edc89abbf22e6db6853f8581f9475fe8ec1 (diff) | |
| download | blackbird-op-linux-aabef8b240880439b91574c9a9e33dcc44bfd8c7.tar.gz blackbird-op-linux-aabef8b240880439b91574c9a9e33dcc44bfd8c7.zip | |
bnx2: fix dma_get_ops compilation breakage
This removes dma_get_ops() prefetch optimization in bnx2.
bnx2 uses dma_get_ops() to see if dma_sync_single_for_cpu() is
noop. bnx2 does prefetch if it's noop.
But dma_get_ops() isn't available on all the architectures (only the
architectures that uses dma_map_ops struct have it). Using
dma_get_ops() in drivers leads to compilation breakage on many
architectures.
This patch removes dma_get_ops() and changes bnx2 to do prefetch on
all the architectures. This adds useless prefetch on non-coherent
architectures but this is harmless. It is also unlikely to cause the
performance drop.
[ Remove now unused local variable 'pdev' -DaveM ]
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/bnx2.c | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/drivers/net/bnx2.c b/drivers/net/bnx2.c index 949d7a9dcf92..117432222a09 100644 --- a/drivers/net/bnx2.c +++ b/drivers/net/bnx2.c @@ -3073,7 +3073,6 @@ bnx2_rx_int(struct bnx2 *bp, struct bnx2_napi *bnapi, int budget) u16 hw_cons, sw_cons, sw_ring_cons, sw_prod, sw_ring_prod; struct l2_fhdr *rx_hdr; int rx_pkt = 0, pg_ring_used = 0; - struct pci_dev *pdev = bp->pdev; hw_cons = bnx2_get_hw_rx_cons(bnapi); sw_cons = rxr->rx_cons; @@ -3099,12 +3098,10 @@ bnx2_rx_int(struct bnx2 *bp, struct bnx2_napi *bnapi, int budget) skb = rx_buf->skb; prefetchw(skb); - if (!get_dma_ops(&pdev->dev)->sync_single_for_cpu) { - next_rx_buf = - &rxr->rx_buf_ring[ - RX_RING_IDX(NEXT_RX_BD(sw_cons))]; - prefetch(next_rx_buf->desc); - } + next_rx_buf = + &rxr->rx_buf_ring[RX_RING_IDX(NEXT_RX_BD(sw_cons))]; + prefetch(next_rx_buf->desc); + rx_buf->skb = NULL; dma_addr = dma_unmap_addr(rx_buf, mapping); |
