e100: Do pci_dma_sync after skb_alloc for proper operation on ixp4xx

The E100 device can't work on current kernel (2.6.26-rc6) and will cause
kernel corruption on intel ixdp4xx.

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/net/e100.c b/drivers/net/e100.c
index f3cba5e24ec5..1037b1332312 100644
--- a/drivers/net/e100.c
+++ b/drivers/net/e100.c
@@ -1803,6 +1803,8 @@ static int e100_rx_alloc_skb(struct nic *nic, struct rx *rx)
         if (rx->prev->skb) {
                 struct rfd *prev_rfd = (struct rfd *)rx->prev->skb->data;
                 put_unaligned_le32(rx->dma_addr, &prev_rfd->link);
+                pci_dma_sync_single_for_device(nic->pdev, rx->prev->dma_addr,
+                        sizeof(struct rfd), PCI_DMA_TODEVICE);
         }
 
         return 0;