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: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/phonet/pep-gprs.c b/net/phonet/pep-gprs.c
index 4aa8885..851f6a3 100644
--- a/net/phonet/pep-gprs.c
+++ b/net/phonet/pep-gprs.c
@@ -212,8 +212,9 @@
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;
}