diff options
| -rw-r--r-- | drivers/net/8139cp.c | 33 |
1 files changed, 16 insertions, 17 deletions
diff --git a/drivers/net/8139cp.c b/drivers/net/8139cp.c index 1428bb7715af..8f5d77923c7d 100644 --- a/drivers/net/8139cp.c +++ b/drivers/net/8139cp.c @@ -316,7 +316,6 @@ struct cp_desc { struct ring_info { struct sk_buff *skb; - dma_addr_t mapping; u32 len; }; @@ -551,7 +550,7 @@ rx_status_loop: break; len = (status & 0x1fff) - 4; - mapping = cp->rx_skb[rx_tail].mapping; + mapping = le64_to_cpu(desc->addr); if ((status & (FirstFrag | LastFrag)) != (FirstFrag | LastFrag)) { /* we don't support incoming fragmented frames. @@ -595,10 +594,8 @@ rx_status_loop: skb_put(skb, len); - mapping = - cp->rx_skb[rx_tail].mapping = - pci_map_single(cp->pdev, new_skb->data, - buflen, PCI_DMA_FROMDEVICE); + mapping = pci_map_single(cp->pdev, new_skb->data, buflen, + PCI_DMA_FROMDEVICE); cp->rx_skb[rx_tail].skb = new_skb; cp_rx_skb(cp, skb, desc); @@ -717,18 +714,19 @@ static void cp_tx (struct cp_private *cp) unsigned tx_tail = cp->tx_tail; while (tx_tail != tx_head) { + struct cp_desc *txd = cp->tx_ring + tx_tail; struct sk_buff *skb; u32 status; rmb(); - status = le32_to_cpu(cp->tx_ring[tx_tail].opts1); + status = le32_to_cpu(txd->opts1); if (status & DescOwn) break; skb = cp->tx_skb[tx_tail].skb; BUG_ON(!skb); - pci_unmap_single(cp->pdev, cp->tx_skb[tx_tail].mapping, + pci_unmap_single(cp->pdev, le64_to_cpu(txd->addr), cp->tx_skb[tx_tail].len, PCI_DMA_TODEVICE); if (status & LastFrag) { @@ -827,7 +825,6 @@ static int cp_start_xmit (struct sk_buff *skb, struct net_device *dev) wmb(); cp->tx_skb[entry].skb = skb; - cp->tx_skb[entry].mapping = mapping; cp->tx_skb[entry].len = len; entry = NEXT_TX(entry); } else { @@ -845,7 +842,6 @@ static int cp_start_xmit (struct sk_buff *skb, struct net_device *dev) first_mapping = pci_map_single(cp->pdev, skb->data, first_len, PCI_DMA_TODEVICE); cp->tx_skb[entry].skb = skb; - cp->tx_skb[entry].mapping = first_mapping; cp->tx_skb[entry].len = first_len; entry = NEXT_TX(entry); @@ -888,7 +884,6 @@ static int cp_start_xmit (struct sk_buff *skb, struct net_device *dev) wmb(); cp->tx_skb[entry].skb = skb; - cp->tx_skb[entry].mapping = mapping; cp->tx_skb[entry].len = len; entry = NEXT_TX(entry); } @@ -1091,6 +1086,7 @@ static int cp_refill_rx (struct cp_private *cp) for (i = 0; i < CP_RX_RING_SIZE; i++) { struct sk_buff *skb; + dma_addr_t mapping; skb = dev_alloc_skb(cp->rx_buf_sz + RX_OFFSET); if (!skb) @@ -1099,12 +1095,12 @@ static int cp_refill_rx (struct cp_private *cp) skb->dev = cp->dev; skb_reserve(skb, RX_OFFSET); - cp->rx_skb[i].mapping = pci_map_single(cp->pdev, - skb->data, cp->rx_buf_sz, PCI_DMA_FROMDEVICE); + mapping = pci_map_single(cp->pdev, skb->data, cp->rx_buf_sz, + PCI_DMA_FROMDEVICE); cp->rx_skb[i].skb = skb; cp->rx_ring[i].opts2 = 0; - cp->rx_ring[i].addr = cpu_to_le64(cp->rx_skb[i].mapping); + cp->rx_ring[i].addr = cpu_to_le64(mapping); if (i == (CP_RX_RING_SIZE - 1)) cp->rx_ring[i].opts1 = cpu_to_le32(DescOwn | RingEnd | cp->rx_buf_sz); @@ -1152,11 +1148,13 @@ static int cp_alloc_rings (struct cp_private *cp) static void cp_clean_rings (struct cp_private *cp) { + struct cp_desc *desc; unsigned i; for (i = 0; i < CP_RX_RING_SIZE; i++) { if (cp->rx_skb[i].skb) { - pci_unmap_single(cp->pdev, cp->rx_skb[i].mapping, + desc = cp->rx_ring + i; + pci_unmap_single(cp->pdev, le64_to_cpu(desc->addr), cp->rx_buf_sz, PCI_DMA_FROMDEVICE); dev_kfree_skb(cp->rx_skb[i].skb); } @@ -1166,9 +1164,10 @@ static void cp_clean_rings (struct cp_private *cp) if (cp->tx_skb[i].skb) { struct sk_buff *skb = cp->tx_skb[i].skb; - pci_unmap_single(cp->pdev, cp->tx_skb[i].mapping, + desc = cp->tx_ring + i; + pci_unmap_single(cp->pdev, le64_to_cpu(desc->addr), cp->tx_skb[i].len, PCI_DMA_TODEVICE); - if (le32_to_cpu(cp->tx_ring[i].opts1) & LastFrag) + if (le32_to_cpu(desc->opts1) & LastFrag) dev_kfree_skb(skb); cp->net_stats.tx_dropped++; } |