提交 bbd5898d 编写于 作者: R Rémi Denis-Courmont 提交者: David S. Miller

Phonet: fix accounting race between gprs_writeable() and gprs_xmit()

In the unlikely event that gprs_writeable() and gprs_xmit() check for
writeability at the same, we could stop the device queue forever.
Signed-off-by: NRémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
上级 c930a662
......@@ -212,8 +212,9 @@ static int gprs_xmit(struct sk_buff *skb, struct net_device *dev)
dev->stats.tx_bytes += len;
}
if (!pep_writeable(sk))
netif_stop_queue(dev);
netif_stop_queue(dev);
if (pep_writeable(sk))
netif_wake_queue(dev);
return 0;
}
......
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