- pci_unmap_single(bp->pdev, mapping, len,PCI_DMA_TODEVICE);
- memcpy(bp->tx_bufs+entry*TX_PKT_BUF_SZ,skb->data,skb->len);
- mapping = pci_map_single(bp->pdev, bp->tx_bufs+entry*TX_PKT_BUF_SZ, len, PCI_DMA_TODEVICE);
+ if (!dma_mapping_error(mapping))
+ pci_unmap_single(bp->pdev, mapping, len, PCI_DMA_TODEVICE);
+
+ bounce_skb = __dev_alloc_skb(TX_PKT_BUF_SZ,
+ GFP_ATOMIC|GFP_DMA);
+ if (!bounce_skb)
+ goto err_out;
+
+ mapping = pci_map_single(bp->pdev, bounce_skb->data,
+ len, PCI_DMA_TODEVICE);
+ if (dma_mapping_error(mapping) || mapping + len > B44_DMA_MASK) {
+ if (!dma_mapping_error(mapping))
+ pci_unmap_single(bp->pdev, mapping,
+ len, PCI_DMA_TODEVICE);
+ dev_kfree_skb_any(bounce_skb);
+ goto err_out;
+ }
+
+ memcpy(skb_put(bounce_skb, len), skb->data, skb->len);
+ dev_kfree_skb_any(skb);
+ skb = bounce_skb;