1 files changed, 23 insertions, 0 deletions

diff --git a/drivers/s390/scsi/zfcp_aux.c b/drivers/s390/scsi/zfcp_aux.c
index d23027a2f2f0..41635b13ccb1 100644
--- a/drivers/s390/scsi/zfcp_aux.c
+++ b/drivers/s390/scsi/zfcp_aux.c
@@ -970,6 +970,27 @@ static void zfcp_dummy_release(struct device *dev)
         return;
 }
 
+int zfcp_status_read_refill(struct zfcp_adapter *adapter)
+{
+        while (atomic_read(&adapter->stat_miss) > 0)
+                if (zfcp_fsf_status_read(adapter, ZFCP_WAIT_FOR_SBAL))
+                        break;
+        else
+                atomic_dec(&adapter->stat_miss);
+
+        if (ZFCP_STATUS_READS_RECOM <= atomic_read(&adapter->stat_miss)) {
+                zfcp_erp_adapter_reopen(adapter, 0, 103, NULL);
+                return 1;
+        }
+        return 0;
+}
+
+static void _zfcp_status_read_scheduler(struct work_struct *work)
+{
+        zfcp_status_read_refill(container_of(work, struct zfcp_adapter,
+                                             stat_work));
+}
+
 /*
  * Enqueues an adapter at the end of the adapter list in the driver data.
  * All adapter internal structures are set up.
@@ -1063,6 +1084,7 @@ zfcp_adapter_enqueue(struct ccw_device *ccw_device)
 
         /* initialize lock of associated request queue */
         rwlock_init(&adapter->request_queue.queue_lock);
+        INIT_WORK(&adapter->stat_work, _zfcp_status_read_scheduler);
 
         /* mark adapter unusable as long as sysfs registration is not complete */
         atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &adapter->status);
@@ -1123,6 +1145,7 @@ zfcp_adapter_dequeue(struct zfcp_adapter *adapter)
         int retval = 0;
         unsigned long flags;
 
+        cancel_work_sync(&adapter->stat_work);
         zfcp_adapter_scsi_unregister(adapter);
         device_unregister(&adapter->generic_services);
         zfcp_sysfs_adapter_remove_files(&adapter->ccw_device->dev);