diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index 80e45de096a9..fb613d70c2cb 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -1107,17 +1107,22 @@ void dasd_int_handler(struct ccw_device *cdev, unsigned long intparm,
 		if (cqr)
 			memcpy(&cqr->irb, irb, sizeof(*irb));
 		device = dasd_device_from_cdev_locked(cdev);
-		if (!IS_ERR(device)) {
-			device->discipline->dump_sense_dbf(device, irb,
-							   "unsolicited");
-			if ((device->features & DASD_FEATURE_ERPLOG))
-				device->discipline->dump_sense(device, cqr,
-							       irb);
-			dasd_device_clear_timer(device);
-			device->discipline->handle_unsolicited_interrupt(device,
-									 irb);
+		if (IS_ERR(device))
+			return;
+		/* ignore unsolicited interrupts for DIAG discipline */
+		if (device->discipline == dasd_diag_discipline_pointer) {
 			dasd_put_device(device);
+			return;
 		}
+		device->discipline->dump_sense_dbf(device, irb,
+						   "unsolicited");
+		if ((device->features & DASD_FEATURE_ERPLOG))
+			device->discipline->dump_sense(device, cqr,
+						       irb);
+		dasd_device_clear_timer(device);
+		device->discipline->handle_unsolicited_interrupt(device,
+								 irb);
+		dasd_put_device(device);
 		return;
 	}