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authorJon Smirl <jonsmirl@gmail.com>2007-12-03 22:38:10 +0000
committerJeff Garzik <jeff@garzik.org>2007-12-04 14:53:14 -0500
commit4c537e6371a9510c82eb96fb7e1e66017e0e2053 (patch)
tree01119d2340a0d064d7e9227cd2df2711dcb7b6e1 /drivers/net/fec_mpc52xx.c
parent0581d3f53053de597ef4956568c15785e59828ef (diff)
Fix memory corruption in fec_mpc52xx
The mpc5200 fec driver is corrupting memory. This patch fixes two bugs where the wrong skb was being referenced. Signed-off-by: Jon Smirl <jonsmirl@gmail.com> Acked-by: Domen Puncer <domen.puncer@telargo.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/net/fec_mpc52xx.c')
-rw-r--r--drivers/net/fec_mpc52xx.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/net/fec_mpc52xx.c b/drivers/net/fec_mpc52xx.c
index bf5a7caa5b5..79f7eade477 100644
--- a/drivers/net/fec_mpc52xx.c
+++ b/drivers/net/fec_mpc52xx.c
@@ -422,7 +422,7 @@ static irqreturn_t mpc52xx_fec_rx_interrupt(int irq, void *dev_id)
rskb = bcom_retrieve_buffer(priv->rx_dmatsk, &status,
(struct bcom_bd **)&bd);
- dma_unmap_single(&dev->dev, bd->skb_pa, skb->len, DMA_FROM_DEVICE);
+ dma_unmap_single(&dev->dev, bd->skb_pa, rskb->len, DMA_FROM_DEVICE);
/* Test for errors in received frame */
if (status & BCOM_FEC_RX_BD_ERRORS) {
@@ -467,7 +467,7 @@ static irqreturn_t mpc52xx_fec_rx_interrupt(int irq, void *dev_id)
bcom_prepare_next_buffer(priv->rx_dmatsk);
bd->status = FEC_RX_BUFFER_SIZE;
- bd->skb_pa = dma_map_single(&dev->dev, rskb->data,
+ bd->skb_pa = dma_map_single(&dev->dev, skb->data,
FEC_RX_BUFFER_SIZE, DMA_FROM_DEVICE);
bcom_submit_next_buffer(priv->rx_dmatsk, skb);