[PATCH net-next 01/13] net: hns3: refactor out hclge_cmd_convert_err_code()

[Huazhong Tan]

From: Peng Li <lipeng...@huawei.com>

To improve code readability and maintainability, refactor
hclge_cmd_convert_err_code() with an array of imp_errcode
and common_errno mapping, instead of a bloated switch/case.

Signed-off-by: Peng Li <lipeng...@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazh...@huawei.com>
---
 .../net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.c | 55 +++++++++++-----------
 1 file changed, 27 insertions(+), 28 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.c 
b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.c
index 6546b47..cb2c955 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.c
@@ -189,36 +189,35 @@ static bool hclge_is_special_opcode(u16 opcode)
        return false;
 }
 
+struct errcode {
+       u32 imp_errcode;
+       int common_errno;
+};
+
 static int hclge_cmd_convert_err_code(u16 desc_ret)
 {
-       switch (desc_ret) {
-       case HCLGE_CMD_EXEC_SUCCESS:
-               return 0;
-       case HCLGE_CMD_NO_AUTH:
-               return -EPERM;
-       case HCLGE_CMD_NOT_SUPPORTED:
-               return -EOPNOTSUPP;
-       case HCLGE_CMD_QUEUE_FULL:
-               return -EXFULL;
-       case HCLGE_CMD_NEXT_ERR:
-               return -ENOSR;
-       case HCLGE_CMD_UNEXE_ERR:
-               return -ENOTBLK;
-       case HCLGE_CMD_PARA_ERR:
-               return -EINVAL;
-       case HCLGE_CMD_RESULT_ERR:
-               return -ERANGE;
-       case HCLGE_CMD_TIMEOUT:
-               return -ETIME;
-       case HCLGE_CMD_HILINK_ERR:
-               return -ENOLINK;
-       case HCLGE_CMD_QUEUE_ILLEGAL:
-               return -ENXIO;
-       case HCLGE_CMD_INVALID:
-               return -EBADR;
-       default:
-               return -EIO;
-       }
+       struct errcode hclge_cmd_errcode[] = {
+               {HCLGE_CMD_EXEC_SUCCESS, 0},
+               {HCLGE_CMD_NO_AUTH, -EPERM},
+               {HCLGE_CMD_NOT_SUPPORTED, -EOPNOTSUPP},
+               {HCLGE_CMD_QUEUE_FULL, -EXFULL},
+               {HCLGE_CMD_NEXT_ERR, -ENOSR},
+               {HCLGE_CMD_UNEXE_ERR, -ENOTBLK},
+               {HCLGE_CMD_PARA_ERR, -EINVAL},
+               {HCLGE_CMD_RESULT_ERR, -ERANGE},
+               {HCLGE_CMD_TIMEOUT, -ETIME},
+               {HCLGE_CMD_HILINK_ERR, -ENOLINK},
+               {HCLGE_CMD_QUEUE_ILLEGAL, -ENXIO},
+               {HCLGE_CMD_INVALID, -EBADR},
+       };
+       u32 errcode_count = ARRAY_SIZE(hclge_cmd_errcode);
+       u32 i;
+
+       for (i = 0; i < errcode_count; i++)
+               if (hclge_cmd_errcode[i].imp_errcode == desc_ret)
+                       return hclge_cmd_errcode[i].common_errno;
+
+       return -EIO;
 }
 
 static int hclge_cmd_check_retval(struct hclge_hw *hw, struct hclge_desc *desc,
-- 
2.7.4