[SCSI] zfcp: Wait for port scan to complete when setting adapter online

Attaching a unit immediately after setting the adapter online should
be possible. The problem right now is that the port_scan runs from a
workqueue and has not finished when the set_online call returns and
the sysfs structures for the ports are not available yet. Fix that by
waiting for the port scan to complete.

Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

diff --git a/drivers/s390/scsi/zfcp_ccw.c b/drivers/s390/scsi/zfcp_ccw.c
index b04038c..951a8d4 100644 (file)
--- a/drivers/s390/scsi/zfcp_ccw.c
+++ b/drivers/s390/scsi/zfcp_ccw.c
@@ -116,7 +116,9 @@ static int zfcp_ccw_set_online(struct ccw_device *ccw_device)
        zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED, 85,
                                NULL);
        zfcp_erp_wait(adapter);
-       goto out;
+       up(&zfcp_data.config_sema);
+       flush_work(&adapter->scan_work);
+       return 0;
 
  out_scsi_register:
        zfcp_erp_thread_kill(adapter);