net: hns3: add check for HNS3_NIC_STATE_INITED in hns3_reset_notify_up_enet()

In some cases, the device is not initialized because reset failed.
If another task calls hns3_reset_notify_up_enet() before reset
retry, it will cause an error since uninitialized pointer access.
So add check for HNS3_NIC_STATE_INITED before calling
hns3_nic_net_open() in hns3_reset_notify_up_enet().

Fixes: bb6b94a896d4 ("net: hns3: Add reset interface implementation in client")
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
index c21dd11..5dc6de5 100644 (file)
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -4616,6 +4616,11 @@ static int hns3_reset_notify_up_enet(struct hnae3_handle *handle)
        struct hns3_nic_priv *priv = netdev_priv(kinfo->netdev);
        int ret = 0;
 
+       if (!test_bit(HNS3_NIC_STATE_INITED, &priv->state)) {
+               netdev_err(kinfo->netdev, "device is not initialized yet\n");
+               return -EFAULT;
+       }
+
        clear_bit(HNS3_NIC_STATE_RESETTING, &priv->state);
 
        if (netif_running(kinfo->netdev)) {