diff options
| author | Jiajun Wu <b06378@freescale.com> | 2010-01-18 05:47:50 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-07-05 11:11:16 -0700 |
| commit | 21eaa71fdb6f33ee62c4e308d320510f14eac6b4 (patch) | |
| tree | 7bd42190bdbff873a75eeee5f57cbf94182acb89 | |
| parent | 7c1558cb5e752c81ad3a151a5ac2c032a8dcfe23 (diff) | |
ucc_geth: Fix full TX queue processing
commit 34692421bc7d6145ef383b014860f4fde10b7505 upstream.
commit 7583605b6d29f1f7f6fc505b883328089f3485ad ("ucc_geth: Fix empty
TX queue processing") fixed empty TX queue mishandling, but didn't
account another corner case: when TX queue becomes full.
Without this patch the driver will stop transmiting when TX queue
becomes full since 'bd == ugeth->txBd[txQ]' actually checks for
two things: queue empty or full.
Let's better check for NULL skb, which unambiguously signals an empty
queue.
Signed-off-by: Jiajun Wu <b06378@freescale.com>
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | drivers/net/ucc_geth.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/net/ucc_geth.c b/drivers/net/ucc_geth.c index 5077fd90446b..b4b25ffa3ab7 100644 --- a/drivers/net/ucc_geth.c +++ b/drivers/net/ucc_geth.c @@ -3276,13 +3276,12 @@ static int ucc_geth_tx(struct net_device *dev, u8 txQ) /* Handle the transmitted buffer and release */ /* the BD to be used with the current frame */ - if (bd == ugeth->txBd[txQ]) /* queue empty? */ + skb = ugeth->tx_skbuff[txQ][ugeth->skb_dirtytx[txQ]]; + if (!skb) break; dev->stats.tx_packets++; - skb = ugeth->tx_skbuff[txQ][ugeth->skb_dirtytx[txQ]]; - if (skb_queue_len(&ugeth->rx_recycle) < RX_BD_RING_LEN && skb_recycle_check(skb, ugeth->ug_info->uf_info.max_rx_buf_length + |