--- a/rvinterf/etmsync/l1tmops.c	Fri Nov 17 00:26:09 2017 +0000
+++ b/rvinterf/etmsync/l1tmops.c	Fri Nov 17 00:37:52 2017 +0000
@@ -27,11 +27,11 @@
 	if (rvi_msg[3]) {
 		fprintf(stderr, "target error %u in response to tms\n",
 			rvi_msg[3]);
-		exit(ERROR_TARGET);
+		return(ERROR_TARGET);
 	}
 	if (rvi_msg_len != 5) {
 		fprintf(stderr, "target error: tms response wrong length\n");
-		exit(ERROR_TARGET);
+		return(ERROR_TARGET);
 	}
 	return(0);
 }
@@ -48,15 +48,15 @@
 	if (rvi_msg[3]) {
 		fprintf(stderr, "target error %u in response to rfpr\n",
 			rvi_msg[3]);
-		exit(ERROR_TARGET);
+		return(ERROR_TARGET);
 	}
 	if (rvi_msg_len != 8) {
 		fprintf(stderr, "target error: rfpr response wrong length\n");
-		exit(ERROR_TARGET);
+		return(ERROR_TARGET);
 	}
 	if (rvi_msg[4] != index) {
 		fprintf(stderr, "target error: rfpr response wrong index\n");
-		exit(ERROR_TARGET);
+		return(ERROR_TARGET);
 	}
 	*retp = rvi_msg[5] | (rvi_msg[6] << 8);
 	return(0);
@@ -75,15 +75,15 @@
 	if (rvi_msg[3]) {
 		fprintf(stderr, "target error %u in response to rfpw\n",
 			rvi_msg[3]);
-		exit(ERROR_TARGET);
+		return(ERROR_TARGET);
 	}
 	if (rvi_msg_len != 6) {
 		fprintf(stderr, "target error: rfpw response wrong length\n");
-		exit(ERROR_TARGET);
+		return(ERROR_TARGET);
 	}
 	if (rvi_msg[4] != index) {
 		fprintf(stderr, "target error: rfpw response wrong index\n");
-		exit(ERROR_TARGET);
+		return(ERROR_TARGET);
 	}
 	return(0);
 }
@@ -99,15 +99,15 @@
 	if (rvi_msg[3]) {
 		fprintf(stderr, "target error %u in response to rftr\n",
 			rvi_msg[3]);
-		exit(ERROR_TARGET);
+		return(ERROR_TARGET);
 	}
 	if (rvi_msg_len < size + 6) {
 		fprintf(stderr, "target error: rftr response too short\n");
-		exit(ERROR_TARGET);
+		return(ERROR_TARGET);
 	}
 	if (rvi_msg[4] != index) {
 		fprintf(stderr, "target error: rftr response wrong index\n");
-		exit(ERROR_TARGET);
+		return(ERROR_TARGET);
 	}
 	bcopy(rvi_msg + 5, table, size);
 	return(0);
@@ -124,15 +124,15 @@
 	if (rvi_msg[3]) {
 		fprintf(stderr, "target error %u in response to ttr\n",
 			rvi_msg[3]);
-		exit(ERROR_TARGET);
+		return(ERROR_TARGET);
 	}
 	if (rvi_msg_len != 38) {
 		fprintf(stderr, "target error: ttr response wrong length\n");
-		exit(ERROR_TARGET);
+		return(ERROR_TARGET);
 	}
 	if (rvi_msg[4] != index) {
 		fprintf(stderr, "target error: ttr response wrong index\n");
-		exit(ERROR_TARGET);
+		return(ERROR_TARGET);
 	}
 	bcopy(rvi_msg + 5, buf, 32);
 	return(0);