[PATCH net-next v2] hinic: fix strncpy output truncated compile warnings

[Luo bin]

fix the compile warnings of 'strncpy' output truncated before
terminating nul copying N bytes from a string of the same length

Signed-off-by: Luo bin <luob...@huawei.com>
Reported-by: kernel test robot <l...@intel.com>
---
V2~V1:
- remove strncpy
V0~V1:
- use the strlen()+1 pattern consistently

 .../net/ethernet/huawei/hinic/hinic_devlink.c | 32 +++++++------------
 .../net/ethernet/huawei/hinic/hinic_hw_dev.h  |  2 --
 2 files changed, 12 insertions(+), 22 deletions(-)

diff --git a/drivers/net/ethernet/huawei/hinic/hinic_devlink.c 
b/drivers/net/ethernet/huawei/hinic/hinic_devlink.c
index c6adc776f3c8..16bda7381ba0 100644
--- a/drivers/net/ethernet/huawei/hinic/hinic_devlink.c
+++ b/drivers/net/ethernet/huawei/hinic/hinic_devlink.c
@@ -334,19 +334,14 @@ void hinic_devlink_unregister(struct hinic_devlink_priv 
*priv)
 static int chip_fault_show(struct devlink_fmsg *fmsg,
                           struct hinic_fault_event *event)
 {
-       char fault_level[FAULT_TYPE_MAX][FAULT_SHOW_STR_LEN + 1] = {
-               "fatal", "reset", "flr", "general", "suggestion"};
-       char level_str[FAULT_SHOW_STR_LEN + 1] = {0};
-       u8 level;
+       const char * const level_str[FAULT_LEVEL_MAX + 1] = {
+               "fatal", "reset", "flr", "general", "suggestion", "Unknown"};
+       u8 fault_level;
        int err;
 
-       level = event->event.chip.err_level;
-       if (level < FAULT_LEVEL_MAX)
-               strncpy(level_str, fault_level[level], 
strlen(fault_level[level]));
-       else
-               strncpy(level_str, "Unknown", strlen("Unknown"));
-
-       if (level == FAULT_LEVEL_SERIOUS_FLR) {
+       fault_level = (event->event.chip.err_level < FAULT_LEVEL_MAX) ?
+               event->event.chip.err_level : FAULT_LEVEL_MAX;
+       if (fault_level == FAULT_LEVEL_SERIOUS_FLR) {
                err = devlink_fmsg_u32_pair_put(fmsg, "Function level err 
func_id",
                                                (u32)event->event.chip.func_id);
                if (err)
@@ -361,7 +356,7 @@ static int chip_fault_show(struct devlink_fmsg *fmsg,
        if (err)
                return err;
 
-       err = devlink_fmsg_string_pair_put(fmsg, "err_level", level_str);
+       err = devlink_fmsg_string_pair_put(fmsg, "err_level", 
level_str[fault_level]);
        if (err)
                return err;
 
@@ -381,18 +376,15 @@ static int chip_fault_show(struct devlink_fmsg *fmsg,
 static int fault_report_show(struct devlink_fmsg *fmsg,
                             struct hinic_fault_event *event)
 {
-       char fault_type[FAULT_TYPE_MAX][FAULT_SHOW_STR_LEN + 1] = {
+       const char * const type_str[FAULT_TYPE_MAX + 1] = {
                "chip", "ucode", "mem rd timeout", "mem wr timeout",
-               "reg rd timeout", "reg wr timeout", "phy fault"};
-       char type_str[FAULT_SHOW_STR_LEN + 1] = {0};
+               "reg rd timeout", "reg wr timeout", "phy fault", "Unknown"};
+       u8 fault_type;
        int err;
 
-       if (event->type < FAULT_TYPE_MAX)
-               strncpy(type_str, fault_type[event->type], 
strlen(fault_type[event->type]));
-       else
-               strncpy(type_str, "Unknown", strlen("Unknown"));
+       fault_type = (event->type < FAULT_TYPE_MAX) ? event->type : 
FAULT_TYPE_MAX;
 
-       err = devlink_fmsg_string_pair_put(fmsg, "Fault type", type_str);
+       err = devlink_fmsg_string_pair_put(fmsg, "Fault type", 
type_str[fault_type]);
        if (err)
                return err;
 
diff --git a/drivers/net/ethernet/huawei/hinic/hinic_hw_dev.h 
b/drivers/net/ethernet/huawei/hinic/hinic_hw_dev.h
index dc6e645f2689..701eb81e09a7 100644
--- a/drivers/net/ethernet/huawei/hinic/hinic_hw_dev.h
+++ b/drivers/net/ethernet/huawei/hinic/hinic_hw_dev.h
@@ -504,8 +504,6 @@ enum hinic_fault_type {
        FAULT_TYPE_MAX,
 };
 
-#define FAULT_SHOW_STR_LEN 16
-
 enum hinic_fault_err_level {
        FAULT_LEVEL_FATAL,
        FAULT_LEVEL_SERIOUS_RESET,
-- 
2.17.1