MT#55283 modernise timeval_subtract

Change-Id: I7715ee92e12e88d69e3f714a6714f691646e240c

daemon/call.c

@@ -3901,7 +3901,7 @@ static struct timeval add_ongoing_calls_dur_in_interval(struct timeval *interval
 		if (timercmp(interval_start, &ml->started, >)) {
 			res = timeval_add(&res, interval_duration);
 		} else {
-			timeval_subtract(&call_duration, &rtpe_now, &ml->started);
+			call_duration = timeval_subtract(&rtpe_now, &ml->started);
 			res = timeval_add(&res, &call_duration);
 		}
 next:

daemon/cdr.c

@@ -60,7 +60,7 @@ void cdr_update_entry(call_t * c) {
 			ml->term_reason = UNKNOWN;
 		}
 
-		timeval_subtract(&tim_result_duration,&ml->terminated,&ml->started);
+		tim_result_duration = timeval_subtract(&ml->terminated, &ml->started);
 
 		if (_log_facility_cdr) {
 			g_string_append_printf(cdr,

daemon/cli.c

@@ -726,7 +726,7 @@ static void cli_list_tag_info(struct cli_writer *cw, struct call_monologue *ml)
 	else
 		now = ml->terminated;
 
-	timeval_subtract(&tim_result_duration, &now, &ml->started);
+	tim_result_duration = timeval_subtract(&now, &ml->started);
 
 	cw->cw_printf(cw, "--- Tag '" STR_FORMAT "', type: %s, label '" STR_FORMAT "', "
 			"branch '" STR_FORMAT "', "

daemon/control_ng.c

@@ -863,7 +863,7 @@ static void control_ng_process_payload(ng_ctx *hctx, str *reply, str *data, cons
 	// stop command timer
 	gettimeofday(&cmd_stop, NULL);
 	//print command duration
-	timeval_subtract(&cmd_process_time, &cmd_stop, &cmd_start);
+	cmd_process_time = timeval_subtract(&cmd_stop, &cmd_start);
 
 	if (command_ctx.opmode >= 0 && command_ctx.opmode < OP_COUNT) {
 		mutex_lock(&cur->cmd[command_ctx.opmode].lock);

lib/auxlib.h

@@ -356,8 +356,8 @@ INLINE struct timeval timeval_from_us(long long ms) {
 INLINE long long timeval_diff(const struct timeval *a, const struct timeval *b) {
 	return timeval_us(a) - timeval_us(b);
 }
-INLINE void timeval_subtract(struct timeval *result, const struct timeval *a, const struct timeval *b) {
-	*result = timeval_from_us(timeval_diff(a, b));
+INLINE struct timeval timeval_subtract(const struct timeval *a, const struct timeval *b) {
+	return timeval_from_us(timeval_diff(a, b));
 }
 INLINE struct timeval timeval_add(const struct timeval *a, const struct timeval *b) {
 	return timeval_from_us(timeval_us(a) + timeval_us(b));