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pasemi_mac: fix bug in receive buffer dma mapping

pasemi_mac: fix bug in receive buffer dma mapping

skb->len isn't actually set to the size of the allocated skb, so don't
try to use it when figuring out how much to map.

(This hasn't surfaced as a real bug because we effectively disable
translation for the interface, but it still needs fixing for the future)

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Olof Johansson 17 年之前
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18eec69542
共有 1 個文件被更改,包括 1 次插入1 次删除
  1. 1 1
      drivers/net/pasemi_mac.c

+ 1 - 1
drivers/net/pasemi_mac.c

@@ -396,7 +396,7 @@ static void pasemi_mac_replenish_rx_ring(struct net_device *dev, int limit)
 		if (unlikely(!skb))
 			break;
 
-		dma = pci_map_single(mac->dma_pdev, skb->data, skb->len,
+		dma = pci_map_single(mac->dma_pdev, skb->data, BUF_SIZE,
 				     PCI_DMA_FROMDEVICE);
 
 		if (unlikely(dma_mapping_error(dma))) {