[SCSI] zfcp: Fix adapter activation on link down

If an exchange config is executed while the local link is down, the
request succeeds but the returned data is incomplete.  Proceeding with
the adapter activation is leading to an unpredictable behaviour (e.g.
kernel panic) caused by invalid values.  In such a scenario the
recommended ERP is to retry the action and wait for a link up event.
If the issue persists the activation has to fail.

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

diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c
index beaf0916ceab73e627c95931aa6186ab3df7dd55..be0317457147fc4a891f4b0be67c8116b98526b1 100644 (file)
--- a/drivers/s390/scsi/zfcp_fsf.c
+++ b/drivers/s390/scsi/zfcp_fsf.c
@@ -532,9 +532,6 @@ static void zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *req)
                fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN;
                adapter->hydra_version = 0;
 
-               atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK,
-                               &adapter->status);
-
                zfcp_fsf_link_down_info_eval(req,
                        &qtcb->header.fsf_status_qual.link_down_info);
                break;