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pxa168_eth: fix race in transmit path.

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Because the socket buffer is freed in the completion interrupt, it is not
safe to access it after submitting it to the hardware.

Cc: [email protected]
Cc: Sachin Sanap <[email protected]>
Cc: Zhangfei Gao <[email protected]>
Cc: Philip Rakity <[email protected]>
Signed-off-by: Richard Cochran <[email protected]>
Acked-by: Eric Dumazet <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Richard Cochran 2011-06-19 21:48:06 +00:00 • committed by David S. Miller
commit 384420409d
1 changed files with 1 additions and 1 deletions
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2
drivers/net/pxa168_eth.c
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@ -1273,7 +1273,7 @@ static int pxa168_eth_start_xmit(struct sk_buff *skb, struct net_device *dev)
wmb();
wrl(pep, SDMA_CMD, SDMA_CMD_TXDH | SDMA_CMD_ERD);
stats->tx_bytes += skb->len;
stats->tx_bytes += length;
stats->tx_packets++;
dev->trans_start = jiffies;
if (pep->tx_ring_size - pep->tx_desc_count <= 1) {