[SCSI] zfcp: fix: avoid race between fc_remote_port_add and scsi_add_device

Flush workqueue of a scsi host after a remote port for that host
is registered at the fc transport class. Otherwise immediate
registration of a scsi device on that host is racy.

Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/s390/scsi/zfcp_erp.c b/drivers/s390/scsi/zfcp_erp.c
index 8ed6fcb41653..e3c4bdd29a60 100644
--- a/drivers/s390/scsi/zfcp_erp.c
+++ b/drivers/s390/scsi/zfcp_erp.c
@@ -3415,6 +3415,8 @@ zfcp_erp_action_cleanup(int action, struct zfcp_adapter *adapter,
                                                 "(adapter %s, wwpn=0x%016Lx)\n",
                                                 zfcp_get_busid_by_port(port),
                                                 port->wwpn);
+                        else
+                                scsi_flush_work(adapter->scsi_host);
                 }
                 zfcp_port_put(port);
                 break;