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| author | Lin Yun Sheng <linyunsheng@huawei.com> | 2017-07-12 19:09:59 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-07-12 08:22:34 -0700 |
| commit | 76b825ab870be3281edac4ae8a414da6e54b0d3a (patch) | |
| tree | aa2f3ecb5c98173692ef22e5c1d8d5d5868e460f /drivers/net | |
| parent | 2e3d232e139a7128e2494a840a8a00fb9ab65f45 (diff) | |
| download | linux-76b825ab870be3281edac4ae8a414da6e54b0d3a.tar.gz linux-76b825ab870be3281edac4ae8a414da6e54b0d3a.tar.bz2 linux-76b825ab870be3281edac4ae8a414da6e54b0d3a.zip | |
net: hns: Bugfix for Tx timeout handling in hns driver
When hns port type is not debug mode, netif_tx_disable is called
when there is a tx timeout, which requires system reboot to return
to normal state. This patch fix this problem by resetting the net
dev.
Fixes: b5996f11ea54 ("net: add Hisilicon Network Subsystem basic ethernet support")
Signed-off-by: Lin Yun Sheng <linyunsheng@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/ethernet/hisilicon/hns/hns_enet.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_enet.c b/drivers/net/ethernet/hisilicon/hns/hns_enet.c index fe166e0f6781..3987699f8fe6 100644 --- a/drivers/net/ethernet/hisilicon/hns/hns_enet.c +++ b/drivers/net/ethernet/hisilicon/hns/hns_enet.c @@ -1378,13 +1378,20 @@ void hns_nic_net_reset(struct net_device *ndev) void hns_nic_net_reinit(struct net_device *netdev) { struct hns_nic_priv *priv = netdev_priv(netdev); + enum hnae_port_type type = priv->ae_handle->port_type; netif_trans_update(priv->netdev); while (test_and_set_bit(NIC_STATE_REINITING, &priv->state)) usleep_range(1000, 2000); hns_nic_net_down(netdev); - hns_nic_net_reset(netdev); + + /* Only do hns_nic_net_reset in debug mode + * because of hardware limitation. + */ + if (type == HNAE_PORT_DEBUG) + hns_nic_net_reset(netdev); + (void)hns_nic_net_up(netdev); clear_bit(NIC_STATE_REINITING, &priv->state); } @@ -1997,13 +2004,8 @@ static void hns_nic_reset_subtask(struct hns_nic_priv *priv) rtnl_lock(); /* put off any impending NetWatchDogTimeout */ netif_trans_update(priv->netdev); + hns_nic_net_reinit(priv->netdev); - if (type == HNAE_PORT_DEBUG) { - hns_nic_net_reinit(priv->netdev); - } else { - netif_carrier_off(priv->netdev); - netif_tx_disable(priv->netdev); - } rtnl_unlock(); } |