diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index b755bac..826fd23 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -7,7 +7,7 @@
  * Bugreports.to..: <Linux390@de.ibm.com>
  * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999-2001
  *
- * $Revision: 1.158 $
+ * $Revision: 1.161 $
  */
 
 #include <linux/config.h>
@@ -1131,13 +1131,17 @@
 	request_queue_t *queue;
 	struct request *req;
 	struct dasd_ccw_req *cqr;
-	int nr_queued;
+	int nr_queued, feature_ro;
 
 	queue = device->request_queue;
 	/* No queue ? Then there is nothing to do. */
 	if (queue == NULL)
 		return;
 
+	feature_ro = dasd_get_feature(device->cdev, DASD_FEATURE_READONLY);
+	if (feature_ro < 0) 	/* no devmap */
+		return;
+
 	/*
 	 * We requeue request from the block device queue to the ccw
 	 * queue only in two states. In state DASD_STATE_READY the
@@ -1157,8 +1161,8 @@
 	       elv_next_request(queue) &&
 		nr_queued < DASD_CHANQ_MAX_SIZE) {
 		req = elv_next_request(queue);
-		if (test_bit(DASD_FLAG_RO, &device->flags) &&
-		    rq_data_dir(req) == WRITE) {
+
+		if (feature_ro && rq_data_dir(req) == WRITE) {
 			DBF_DEV_EVENT(DBF_ERR, device,
 				      "Rejecting write request %p",
 				      req);
@@ -1803,13 +1807,17 @@
 
 {
 	struct dasd_device *device;
-	int rc;
+	int feature_diag, rc;
+
+	feature_diag = dasd_get_feature(cdev, DASD_FEATURE_USEDIAG);
+	if (feature_diag < 0)
+		return feature_diag;
 
 	device = dasd_create_device(cdev);
 	if (IS_ERR(device))
 		return PTR_ERR(device);
 
-	if (test_bit(DASD_FLAG_USE_DIAG, &device->flags)) {
+	if (feature_diag) {
 	  	if (!dasd_diag_discipline_pointer) {
 		        printk (KERN_WARNING
 				"dasd_generic couldn't online device %s "