1 files changed, 14 insertions, 16 deletions

diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index ceeb3cf64a16..6527ff6f4706 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -176,7 +176,7 @@ dasd_state_known_to_basic(struct dasd_device * device)
                 return rc;
 
         /* register 'device' debug area, used for all DBF_DEV_XXX calls */
-        device->debug_area = debug_register(device->cdev->dev.bus_id, 0, 2,
+        device->debug_area = debug_register(device->cdev->dev.bus_id, 1, 2,
                                             8 * sizeof (long));
         debug_register_view(device->debug_area, &debug_sprintf_view);
         debug_set_level(device->debug_area, DBF_EMERG);
@@ -1952,26 +1952,24 @@ dasd_generic_notify(struct ccw_device *cdev, int event)
  * Automatically online either all dasd devices (dasd_autodetect) or
  * all devices specified with dasd= parameters.
  */
+static int
+__dasd_auto_online(struct device *dev, void *data)
+{
+        struct ccw_device *cdev;
+
+        cdev = to_ccwdev(dev);
+        if (dasd_autodetect || dasd_busid_known(cdev->dev.bus_id) == 0)
+                ccw_device_set_online(cdev);
+        return 0;
+}
+
 void
 dasd_generic_auto_online (struct ccw_driver *dasd_discipline_driver)
 {
         struct device_driver *drv;
-        struct device *d, *dev;
-        struct ccw_device *cdev;
 
         drv = get_driver(&dasd_discipline_driver->driver);
-        down_read(&drv->bus->subsys.rwsem);
-        dev = NULL;
-        list_for_each_entry(d, &drv->devices, driver_list) {
-                dev = get_device(d);
-                if (!dev)
-                        continue;
-                cdev = to_ccwdev(dev);
-                if (dasd_autodetect || dasd_busid_known(cdev->dev.bus_id) == 0)
-                        ccw_device_set_online(cdev);
-                put_device(dev);
-        }
-        up_read(&drv->bus->subsys.rwsem);
+        driver_for_each_device(drv, NULL, NULL, __dasd_auto_online);
         put_driver(drv);
 }
 
@@ -1983,7 +1981,7 @@ dasd_init(void)
         init_waitqueue_head(&dasd_init_waitq);
 
         /* register 'common' DASD debug area, used for all DBF_XXX calls */
-        dasd_debug_area = debug_register("dasd", 0, 2, 8 * sizeof (long));
+        dasd_debug_area = debug_register("dasd", 1, 2, 8 * sizeof (long));
         if (dasd_debug_area == NULL) {
                 rc = -ENOMEM;
                 goto failed;