From: Jian Shen <shenjian15@huawei.com>
Date: Fri, 21 Sep 2018 16:41:42 +0100
Subject: net: hns3: Add handle for default case
Patch-mainline: v4.20-rc1
Git-commit: fa7a4bd564ccca06f17f5f509ab020ee973b4c72
References: bsc#1104353 FATE#326415

There are a few "switch-case" codes missed handle for default case. For
some abnormal case, it should return error code instead of return 0.

Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/ethernet/hisilicon/hns3/hns3_enet.c           |    2 ++
 drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c        |    7 +++++--
 drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c   |    6 ++++++
 drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_cmd.c  |    8 ++++----
 drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c |    3 +++
 5 files changed, 20 insertions(+), 6 deletions(-)

--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -2176,6 +2176,8 @@ static void hns3_rx_checksum(struct hns3
 		     l4_type == HNS3_L4_TYPE_SCTP))
 			skb->ip_summed = CHECKSUM_UNNECESSARY;
 		break;
+	default:
+		break;
 	}
 }
 
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c
@@ -351,9 +351,10 @@ static int hns3_get_sset_count(struct ne
 
 	case ETH_SS_TEST:
 		return ops->get_sset_count(h, stringset);
-	}
 
-	return 0;
+	default:
+		return -EOPNOTSUPP;
+	}
 }
 
 static void *hns3_update_strings(u8 *data, const struct hns3_stats *stats,
@@ -417,6 +418,8 @@ static void hns3_get_strings(struct net_
 	case ETH_SS_TEST:
 		ops->get_strings(h, stringset, data);
 		break;
+	default:
+		break;
 	}
 }
 
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
@@ -2224,6 +2224,8 @@ static void hclge_clear_event_cause(stru
 	case HCLGE_VECTOR0_EVENT_MBX:
 		hclge_write_dev(&hdev->hw, HCLGE_VECTOR0_CMDQ_SRC_REG, regclr);
 		break;
+	default:
+		break;
 	}
 }
 
@@ -5224,6 +5226,10 @@ static int hclge_init_client_instance(st
 
 				hnae3_set_client_init_flag(client, ae_dev, 1);
 			}
+
+			break;
+		default:
+			return -EINVAL;
 		}
 	}
 
--- a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_cmd.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_cmd.c
@@ -134,7 +134,7 @@ static int hclgevf_init_cmd_queue(struct
 
 		hclgevf_write_dev(hw, HCLGEVF_NIC_CSQ_HEAD_REG, 0);
 		hclgevf_write_dev(hw, HCLGEVF_NIC_CSQ_TAIL_REG, 0);
-		break;
+		return 0;
 	case HCLGEVF_TYPE_CRQ:
 		reg_val = (u32)ring->desc_dma_addr;
 		hclgevf_write_dev(hw, HCLGEVF_NIC_CRQ_BASEADDR_L_REG, reg_val);
@@ -147,10 +147,10 @@ static int hclgevf_init_cmd_queue(struct
 
 		hclgevf_write_dev(hw, HCLGEVF_NIC_CRQ_HEAD_REG, 0);
 		hclgevf_write_dev(hw, HCLGEVF_NIC_CRQ_TAIL_REG, 0);
-		break;
+		return 0;
+	default:
+		return -EINVAL;
 	}
-
-	return 0;
 }
 
 void hclgevf_cmd_setup_basic_desc(struct hclgevf_desc *desc,
--- a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
@@ -1668,6 +1668,9 @@ static int hclgevf_init_client_instance(
 		}
 
 		hnae3_set_client_init_flag(client, ae_dev, 1);
+		break;
+	default:
+		return -EINVAL;
 	}
 
 	return 0;