--- s390-tools-2.11.0/libdasd/dasd_ioctl.c	2019-09-06 08:13:09.000000000 -0400
+++ s390-tools-2.11.0/libdasd/dasd_ioctl.c	2019-11-25 14:03:25.452391000 -0500
@@ -149,6 +149,7 @@
 	fd = dasd_open_device(device, O_RDWR);
 	RUN_IOCTL(fd, BLKROGET, &val);
 	*ro = (val != 0) ? true : false;
+	dasd_close_device(fd);
 
 	return 0;
 }