[PATCH] forcedeth: fix pci_map_single parameters for rx

[Manfred Spraul]

Hi,

forcedeth called pci_map_single() with size==0 in the rx codepath. This 
might explain the crashes on x86-64.
The attached patch fixes that. Who saw data corruptions? Are they fixed 
by the attached patch?

--
   Manfred
--- 2.6/drivers/net/forcedeth.c 2005-12-19 01:36:54.000000000 +0100
+++ x64/drivers/net/forcedeth.c 2005-12-22 21:31:41.000000000 +0100
@@ -871,8 +871,8 @@
                } else {
                        skb = np->rx_skbuff[nr];
                }
-               np->rx_dma[nr] = pci_map_single(np->pci_dev, skb->data, 
skb->len,
-                                               PCI_DMA_FROMDEVICE);
+               np->rx_dma[nr] = pci_map_single(np->pci_dev, skb->data,
+                                       skb->end-skb->data, PCI_DMA_FROMDEVICE);
                if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
                        np->rx_ring.orig[nr].PacketBuffer = 
cpu_to_le32(np->rx_dma[nr]);
                        wmb();
@@ -999,7 +999,7 @@
                wmb();
                if (np->rx_skbuff[i]) {
                        pci_unmap_single(np->pci_dev, np->rx_dma[i],
-                                               np->rx_skbuff[i]->len,
+                                               
np->rx_skbuff[i]->end-np->rx_skbuff[i]->data,
                                                PCI_DMA_FROMDEVICE);
                        dev_kfree_skb(np->rx_skbuff[i]);
                        np->rx_skbuff[i] = NULL;
@@ -1334,7 +1334,7 @@
                 * the performance.
                 */
                pci_unmap_single(np->pci_dev, np->rx_dma[i],
-                               np->rx_skbuff[i]->len,
+                               np->rx_skbuff[i]->end-np->rx_skbuff[i]->data,
                                PCI_DMA_FROMDEVICE);
 
                {