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authorDhananjay Phadke <dhananjay@netxen.com>2009-03-09 08:50:53 +0000
committerDavid S. Miller <davem@davemloft.net>2009-03-10 05:10:02 -0700
commitd32cc3d24eace8a271a39ffe8aeae1861f400d2d (patch)
tree34e15aed220242cf6b14d854b496d42747cf9418 /drivers/net/netxen/netxen_nic_init.c
parent0ddc110c6fef34c554999448cdffe9c174a15fc9 (diff)
downloadop-kernel-dev-d32cc3d24eace8a271a39ffe8aeae1861f400d2d.zip
op-kernel-dev-d32cc3d24eace8a271a39ffe8aeae1861f400d2d.tar.gz
netxen: small xmit optimizations
Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/netxen/netxen_nic_init.c')
-rw-r--r--drivers/net/netxen/netxen_nic_init.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/netxen/netxen_nic_init.c b/drivers/net/netxen/netxen_nic_init.c
index f816434..72aba63 100644
--- a/drivers/net/netxen/netxen_nic_init.c
+++ b/drivers/net/netxen/netxen_nic_init.c
@@ -955,6 +955,7 @@ int netxen_process_cmd_ring(struct netxen_adapter *adapter)
int done = 0;
last_consumer = adapter->last_cmd_consumer;
+ barrier(); /* cmd_consumer can change underneath */
consumer = le32_to_cpu(*(adapter->cmd_consumer));
while (last_consumer != consumer) {
@@ -1005,6 +1006,7 @@ int netxen_process_cmd_ring(struct netxen_adapter *adapter)
* There is still a possible race condition and the host could miss an
* interrupt. The card has to take care of this.
*/
+ barrier(); /* cmd_consumer can change underneath */
consumer = le32_to_cpu(*(adapter->cmd_consumer));
done = (last_consumer == consumer);
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