s390/dasd: move wake_up call

Ensure that all work is done when the process waiting for a
dasd state change is woken up. With this change it is save
to assume that after a userspace triggered state change and
a udev settle invocation there are no unexpected users of a
dasd device.

Acked-by: Stefan Weinhuber <wein@de.ibm.com>
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index 15370a2..6498d15 100644 (file)
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -534,11 +534,11 @@ static void dasd_change_state(struct dasd_device *device)
        if (rc)
                device->target = device->state;
 
-       if (device->state == device->target)
-               wake_up(&dasd_init_waitq);
-
        /* let user-space know that the device status changed */
        kobject_uevent(&device->cdev->dev.kobj, KOBJ_CHANGE);
+
+       if (device->state == device->target)
+               wake_up(&dasd_init_waitq);
 }
 
 /*