nvme: make --opcode argument mandatory

The shorthand -o change for --output from --opcode before.
Then the default opcode value zero used incorrectly if the -o used.

Signed-off-by: Tokunori Ikegami <[email protected]>

Author: ikegami-t

nvme.c

@@ -9123,6 +9123,11 @@ static int passthru(int argc, char **argv, bool admin,
 		return err;
 	}
 
+	if (!argconfig_parse_seen(opts, "opcode")) {
+		nvme_show_error("%s: opcode parameter required", cmd->name);
+		return -EINVAL;
+	}
+
 	if (cfg.opcode & 0x01) {
 		cfg.write = true;
 		flags = O_RDONLY;
@@ -10186,6 +10191,11 @@ static int nvme_mi(int argc, char **argv, __u8 admin_opcode, const char *desc)
 	if (err)
 		return err;
 
+	if (!argconfig_parse_seen(opts, "opcode")) {
+		nvme_show_error("%s: opcode parameter required", *argv);
+		return -EINVAL;
+	}
+
 	if (admin_opcode == nvme_admin_nvme_mi_send) {
 		flags = O_RDONLY;
 		fd = STDIN_FILENO;