diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index acf222f..fa2339c 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -37,6 +37,9 @@
  */
 #define DASD_CHANQ_MAX_SIZE 4
 
+#define DASD_SLEEPON_START_TAG	(void *) 1
+#define DASD_SLEEPON_END_TAG	(void *) 2
+
 /*
  * SECTION: exported variables of dasd.c
  */
@@ -1472,7 +1475,10 @@
  */
 static void dasd_wakeup_cb(struct dasd_ccw_req *cqr, void *data)
 {
-	wake_up((wait_queue_head_t *) data);
+	spin_lock_irq(get_ccwdev_lock(cqr->startdev->cdev));
+	cqr->callback_data = DASD_SLEEPON_END_TAG;
+	spin_unlock_irq(get_ccwdev_lock(cqr->startdev->cdev));
+	wake_up(&generic_waitq);
 }
 
 static inline int _wait_for_wakeup(struct dasd_ccw_req *cqr)
@@ -1482,10 +1488,7 @@
 
 	device = cqr->startdev;
 	spin_lock_irq(get_ccwdev_lock(device->cdev));
-	rc = ((cqr->status == DASD_CQR_DONE ||
-	       cqr->status == DASD_CQR_NEED_ERP ||
-	       cqr->status == DASD_CQR_TERMINATED) &&
-	      list_empty(&cqr->devlist));
+	rc = (cqr->callback_data == DASD_SLEEPON_END_TAG);
 	spin_unlock_irq(get_ccwdev_lock(device->cdev));
 	return rc;
 }
@@ -1573,7 +1576,7 @@
 			wait_event(generic_waitq, !(device->stopped));
 
 		cqr->callback = dasd_wakeup_cb;
-		cqr->callback_data = (void *) &generic_waitq;
+		cqr->callback_data = DASD_SLEEPON_START_TAG;
 		dasd_add_request_tail(cqr);
 		if (interruptible) {
 			rc = wait_event_interruptible(
@@ -1652,7 +1655,7 @@
 	}
 
 	cqr->callback = dasd_wakeup_cb;
-	cqr->callback_data = (void *) &generic_waitq;
+	cqr->callback_data = DASD_SLEEPON_START_TAG;
 	cqr->status = DASD_CQR_QUEUED;
 	list_add(&cqr->devlist, &device->ccw_queue);