[S390] usage of s390dbf: shrink number of debug areas to use.

Signed-off-by: Peter Tiedemann <ptiedem@de.ibm.com>
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index 99268b9..1db15f3 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -214,7 +214,7 @@
 			return rc;
 	}
 	/* register 'device' debug area, used for all DBF_DEV_XXX calls */
-	device->debug_area = debug_register(device->cdev->dev.bus_id, 1, 2,
+	device->debug_area = debug_register(device->cdev->dev.bus_id, 1, 1,
 					    8 * sizeof(long));
 	debug_register_view(device->debug_area, &debug_sprintf_view);
 	debug_set_level(device->debug_area, DBF_WARNING);
@@ -2435,7 +2435,7 @@
 	init_waitqueue_head(&dasd_flush_wq);
 
 	/* register 'common' DASD debug area, used for all DBF_XXX calls */
-	dasd_debug_area = debug_register("dasd", 1, 2, 8 * sizeof(long));
+	dasd_debug_area = debug_register("dasd", 1, 1, 8 * sizeof(long));
 	if (dasd_debug_area == NULL) {
 		rc = -ENOMEM;
 		goto failed;