[S390] cio: introduce notifier for boxed state

If a ccw device did not respond in time during internal io, we set it
into boxed state. With this patch we have the following behaviour:
 * the ccw driver will get a notification if the device was online and
   goes into the boxed state
 * if the device was disconnected and got boxed nothing special is to be
   done (it will be handled in reprobing later)
 * if the device got boxed while initial sensing it will be unregistered

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

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
index cdbf664ed446..868f8c6b053a 100644
--- a/drivers/s390/cio/device.c
+++ b/drivers/s390/cio/device.c
@@ -1035,6 +1035,8 @@ io_subchannel_recog_done(struct ccw_device *cdev)
                 return;
         }
         switch (cdev->private->state) {
+        case DEV_STATE_BOXED:
+                /* Device did not respond in time. */
         case DEV_STATE_NOT_OPER:
                 cdev->private->flags.recog_done = 1;
                 /* Remove device found not operational. */
@@ -1044,8 +1046,6 @@ io_subchannel_recog_done(struct ccw_device *cdev)
                 if (atomic_dec_and_test(&ccw_device_init_count))
                         wake_up(&ccw_device_init_wq);
                 break;
-        case DEV_STATE_BOXED:
-                /* Device did not respond in time. */
         case DEV_STATE_OFFLINE:
                 /* 
                  * We can't register the device in interrupt context so