[S390] zfcp: Report microcode level through service level interface

Register zfcp with the new /proc/service_level interface to report the
FCP microcode level. When the adapter goes offline or a channel path
disappears, zfcp unregisters, since the microcode version might change
and zfcp does not know about it.

Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 5 insertions, 2 deletions

diff --git a/drivers/s390/scsi/zfcp_erp.c b/drivers/s390/scsi/zfcp_erp.c
index c557ba34e1aa..174d29ce2a69 100644
--- a/drivers/s390/scsi/zfcp_erp.c
+++ b/drivers/s390/scsi/zfcp_erp.c
@@ -1281,10 +1281,13 @@ static void zfcp_erp_action_cleanup(struct zfcp_erp_action *act, int result)
                 break;
 
         case ZFCP_ERP_ACTION_REOPEN_ADAPTER:
-                if (result != ZFCP_ERP_SUCCEEDED)
+                if (result != ZFCP_ERP_SUCCEEDED) {
+                        unregister_service_level(&adapter->service_level);
                         zfcp_erp_rports_del(adapter);
-                else
+                } else {
+                        register_service_level(&adapter->service_level);
                         schedule_work(&adapter->scan_work);
+                }
                 zfcp_adapter_put(adapter);
                 break;
         }