net: hns3: fix netif_napi_del() not do problem when unloading

When the driver is unloading, if a global reset occurs,
unmap_ring_from_vector() in the hns3_nic_uninit_vector_data() will
fail, and hns3_nic_uninit_vector_data() just return. There may be
some netif_napi_del() not be done.

Since hardware will unmap all ring while resetting, so
hns3_nic_uninit_vector_data() should ignore this error, and do the
rest uninitialization.

Fixes: 76ad4f0ee747 ("net: hns3: Add support of HNS3 Ethernet Driver for hip08 SoC")
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: Peng Li <lipeng321@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 ac9b0aa258eccde89fffaed2e4001ad544a952f7..c546b874d6599b3b439e78f89d378e984e7e176d 100644 (file)
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -3183,12 +3183,12 @@ static void hns3_clear_ring_group(struct hns3_enet_ring_group *group)
        group->count = 0;
 }
 
-static int hns3_nic_uninit_vector_data(struct hns3_nic_priv *priv)
+static void hns3_nic_uninit_vector_data(struct hns3_nic_priv *priv)
 {
        struct hnae3_ring_chain_node vector_ring_chain;
        struct hnae3_handle *h = priv->ae_handle;
        struct hns3_enet_tqp_vector *tqp_vector;
-       int i, ret;
+       int i;
 
        for (i = 0; i < priv->vector_num; i++) {
                tqp_vector = &priv->tqp_vector[i];
@@ -3196,15 +3196,10 @@ static int hns3_nic_uninit_vector_data(struct hns3_nic_priv *priv)
                if (!tqp_vector->rx_group.ring && !tqp_vector->tx_group.ring)
                        continue;
 
-               ret = hns3_get_vector_ring_chain(tqp_vector,
-                                                &vector_ring_chain);
-               if (ret)
-                       return ret;
+               hns3_get_vector_ring_chain(tqp_vector, &vector_ring_chain);
 
-               ret = h->ae_algo->ops->unmap_ring_from_vector(h,
+               h->ae_algo->ops->unmap_ring_from_vector(h,
                        tqp_vector->vector_irq, &vector_ring_chain);
-               if (ret)
-                       return ret;
 
                hns3_free_vector_ring_chain(tqp_vector, &vector_ring_chain);
 
@@ -3220,8 +3215,6 @@ static int hns3_nic_uninit_vector_data(struct hns3_nic_priv *priv)
                hns3_clear_ring_group(&tqp_vector->tx_group);
                netif_napi_del(&priv->tqp_vector[i].napi);
        }
-
-       return 0;
 }
 
 static int hns3_nic_dealloc_vector_data(struct hns3_nic_priv *priv)
@@ -3691,7 +3684,7 @@ out_reg_netdev_fail:
 out_init_phy:
        hns3_uninit_all_ring(priv);
 out_init_ring_data:
-       (void)hns3_nic_uninit_vector_data(priv);
+       hns3_nic_uninit_vector_data(priv);
 out_init_vector_data:
        hns3_nic_dealloc_vector_data(priv);
 out_alloc_vector_data:
@@ -3726,9 +3719,7 @@ static void hns3_client_uninit(struct hnae3_handle *handle, bool reset)
 
        hns3_uninit_phy(netdev);
 
-       ret = hns3_nic_uninit_vector_data(priv);
-       if (ret)
-               netdev_err(netdev, "uninit vector error\n");
+       hns3_nic_uninit_vector_data(priv);
 
        ret = hns3_nic_dealloc_vector_data(priv);
        if (ret)
@@ -4121,11 +4112,7 @@ static int hns3_reset_notify_uninit_enet(struct hnae3_handle *handle)
 
        hns3_force_clear_all_rx_ring(handle);
 
-       ret = hns3_nic_uninit_vector_data(priv);
-       if (ret) {
-               netdev_err(netdev, "uninit vector error\n");
-               return ret;
-       }
+       hns3_nic_uninit_vector_data(priv);
 
        hns3_store_coal(priv);