From f2251f668e9527b87c9ba7256e7497cb49abbc20 Mon Sep 17 00:00:00 2001 From: Amit Kumar Salecha Date: Sat, 5 Dec 2009 12:23:55 +0000 Subject: [PATCH] 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 Signed-off-by: Amit Kumar Salecha Signed-off-by: David S. Miller --- drivers/net/netxen/netxen_nic_main.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/net/netxen/netxen_nic_main.c b/drivers/net/netxen/netxen_nic_main.c index 8ffb30bc798f..f4996846a234 100644 --- a/drivers/net/netxen/netxen_nic_main.c +++ b/drivers/net/netxen/netxen_nic_main.c @@ -1011,8 +1011,10 @@ __netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev) 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 @@ static int netxen_nic_poll(struct napi_struct *napi, int budget) 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); } -- 2.20.1