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| author | David S. Miller <davem@sunset.davemloft.net> | 2006-12-28 21:14:52 -0800 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-12-31 14:06:48 -0800 |
| commit | e44c39bd8478bf9e41cbc611c74b5879a7b29f58 (patch) | |
| tree | f5b0f6b3af369fafafa75fd072b2ad093a95e445 | |
| parent | bfff6e92a33dce6121a3d83ef3809e9063b2734e (diff) | |
| download | op-kernel-dev-e44c39bd8478bf9e41cbc611c74b5879a7b29f58.zip op-kernel-dev-e44c39bd8478bf9e41cbc611c74b5879a7b29f58.tar.gz | |
[NET]: Add memory barrrier to netif_poll_enable()
When a driver writer calls this, they generally expect that
all previous stores and modifications they've made will be
visible before netif_poll_enable() executes, so ensure this.
Noticed by Ben H.
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | include/linux/netdevice.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 6be767c..fea0d9d 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -906,6 +906,7 @@ static inline void netif_poll_disable(struct net_device *dev) static inline void netif_poll_enable(struct net_device *dev) { + smp_mb__before_clear_bit(); clear_bit(__LINK_STATE_RX_SCHED, &dev->state); } |
