print: Add const to return type of string

All those strings are supposed to be const.

Signed-off-by: Minwoo Im <minwoo.im.dev@gmail.com>

diff --git a/nvme-print.c b/nvme-print.c
index ac21c06cb49dea3de3bb94ffcbafabf584692eb3..41690cd9bcdccc91201ec7b29e9cd65ff0a56339 100644 (file)
--- a/nvme-print.c
+++ b/nvme-print.c
@@ -1221,7 +1221,7 @@ void show_nvme_resv_report(struct nvme_reservation_status *status, int bytes, __
        printf("\n");
 }
 
-static char *fw_to_string(__u64 fw)
+static const char *fw_to_string(__u64 fw)
 {
        static char ret[9];
        char *c = (char *)&fw;
@@ -1283,7 +1283,7 @@ static void show_effects_log_human(__u32 effect)
                printf("  Reserved CSE\n");
 }
 
-static char *nvme_cmd_to_string(int admin, __u8 opcode)
+static const char *nvme_cmd_to_string(int admin, __u8 opcode)
 {
        if (admin) {
                switch (opcode) {
@@ -1625,7 +1625,7 @@ void show_sanitize_log(struct nvme_sanitize_log_page *sanitize, unsigned int mod
        printf("Estimated Time For Crypto Erase               :  %u\n", le32_to_cpu(sanitize->est_crypto_erase_time));
 }
 
-char *nvme_feature_to_string(int feature)
+const char *nvme_feature_to_string(int feature)
 {
        switch (feature) {
        case NVME_FEAT_ARBITRATION:     return "Arbitration";
@@ -1657,7 +1657,7 @@ char *nvme_feature_to_string(int feature)
        }
 }
 
-char *nvme_register_to_string(int reg)
+const char *nvme_register_to_string(int reg)
 {
        switch (reg) {
        case NVME_REG_CAP:      return "Controller Capabilities";
@@ -1676,7 +1676,7 @@ char *nvme_register_to_string(int reg)
        }
 }
 
-char* nvme_select_to_string(int sel)
+const char *nvme_select_to_string(int sel)
 {
        switch (sel) {
        case 0:  return "Current";
@@ -1697,7 +1697,7 @@ void nvme_show_select_result(__u32 result)
                printf("  Feature is changeable\n");
 }
 
-char *nvme_status_to_string(__u32 status)
+const char *nvme_status_to_string(__u32 status)
 {
        switch (status & 0x3ff) {
        case NVME_SC_SUCCESS:                   return "SUCCESS: The command completed successfully";
@@ -1765,7 +1765,7 @@ char *nvme_status_to_string(__u32 status)
        }
 }
 
-static char* nvme_feature_lba_type_to_string(__u8 type)
+static const char *nvme_feature_lba_type_to_string(__u8 type)
 {
        switch (type) {
        case 0: return "Reserved";
@@ -1799,7 +1799,7 @@ void show_lba_range(struct nvme_lba_range_type *lbrt, int nr_ranges)
 }
 
 
-static char *nvme_feature_wl_hints_to_string(__u8 wh)
+static const char *nvme_feature_wl_hints_to_string(__u8 wh)
 {
        switch (wh) {
        case 0: return "No Workload";
@@ -1809,7 +1809,7 @@ static char *nvme_feature_wl_hints_to_string(__u8 wh)
        }
 }
 
-static char *nvme_feature_temp_type_to_string(__u8 type)
+static const char *nvme_feature_temp_type_to_string(__u8 type)
 {
        switch (type) {
        case 0: return "Over Temperature Threshold";
@@ -1818,7 +1818,7 @@ static char *nvme_feature_temp_type_to_string(__u8 type)
        }
 }
 
-static char *nvme_feature_temp_sel_to_string(__u8 sel)
+static const char *nvme_feature_temp_sel_to_string(__u8 sel)
 {
        switch (sel)
        {
@@ -1927,7 +1927,7 @@ void nvme_directive_show_fields(__u8 dtype, __u8 doper, unsigned int result, uns
         return;
 }
 
-static char *nvme_plm_window(__u32 plm)
+static const char *nvme_plm_window(__u32 plm)
 {
        switch (plm & 0x7) {
        case 1:
@@ -2977,7 +2977,7 @@ static void show_registers_cmbloc(__u32 cmbloc, __u32 cmbsz)
        }
 }
 
-static char *nvme_register_szu_to_string(__u8 szu)
+static const char *nvme_register_szu_to_string(__u8 szu)
 {
        switch (szu) {
        case 0: return "4 KB";

diff --git a/nvme-print.h b/nvme-print.h
index 603965b996acd644a80a0682057d6d6bc0332c7e..6aa94d8d80ab7d6b52648d811a5f93f972187a93 100644 (file)
--- a/nvme-print.h
+++ b/nvme-print.h
@@ -42,10 +42,10 @@ void show_nvme_id_nvmset(struct nvme_id_nvmset *nvmset);
 
 void nvme_feature_show_fields(__u32 fid, unsigned int result, unsigned char *buf);
 void nvme_directive_show_fields(__u8 dtype, __u8 doper, unsigned int result, unsigned char *buf);
-char *nvme_status_to_string(__u32 status);
-char *nvme_select_to_string(int sel);
-char *nvme_feature_to_string(int feature);
-char *nvme_register_to_string(int reg);
+const char *nvme_status_to_string(__u32 status);
+const char *nvme_select_to_string(int sel);
+const char *nvme_feature_to_string(int feature);
+const char *nvme_register_to_string(int reg);
 void nvme_show_select_result(__u32 result);
 
 void json_nvme_id_ctrl(struct nvme_id_ctrl *ctrl, unsigned int mode, void (*vendor_show)(__u8 *vs, struct json_object *root));