netxen: hold tx lock while sending firmware commands
Some firmware commands like mac address addition/deletion are sent
on the transmit ring. So need to hold the tx lock before touching
tx producer/consumer indices.
Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/netxen/netxen_nic_hw.c b/drivers/net/netxen/netxen_nic_hw.c
index e2d2a2f..821cff6 100644
--- a/drivers/net/netxen/netxen_nic_hw.c
+++ b/drivers/net/netxen/netxen_nic_hw.c
@@ -503,6 +503,8 @@
i = 0;
+ netif_tx_lock_bh(adapter->netdev);
+
producer = adapter->cmd_producer;
do {
cmd_desc = &cmd_desc_arr[i];
@@ -527,6 +529,8 @@
netxen_nic_update_cmd_producer(adapter, adapter->cmd_producer);
+ netif_tx_unlock_bh(adapter->netdev);
+
return 0;
}