netxen:fix napi intr enable check
o netif_running() check for enabling interrupt at end of napi poll is
not enough to cover firmwar recovery. Instead test __NX_DEV_UP bit.
o Avoid re-entry into to netxen_nic_down() with __NX_DEV_UP bit check.
Acked-by: Dhananjay Phadke <dhananjay.phadke@qlogic.com>
Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/netxen/netxen_nic_main.c b/drivers/net/netxen/netxen_nic_main.c
index 8ffb30b..f499684 100644
--- a/drivers/net/netxen/netxen_nic_main.c
+++ b/drivers/net/netxen/netxen_nic_main.c
@@ -1011,8 +1011,10 @@
if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
return;
- clear_bit(__NX_DEV_UP, &adapter->state);
+ if (!test_and_clear_bit(__NX_DEV_UP, &adapter->state))
+ return;
+ smp_mb();
spin_lock(&adapter->tx_clean_lock);
netif_carrier_off(netdev);
netif_tx_disable(netdev);
@@ -2053,7 +2055,7 @@
if ((work_done < budget) && tx_complete) {
napi_complete(&sds_ring->napi);
- if (netif_running(adapter->netdev))
+ if (test_bit(__NX_DEV_UP, &adapter->state))
netxen_nic_enable_int(sds_ring);
}