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[SCSI] zfcp: Fix adapter activation on link down

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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>
This commit is contained in:
Swen Schillig 2010-10-05 17:12:53 +02:00 committed by James Bottomley
parent 229aebb873
commit 0df138476c
1 changed files with 0 additions and 3 deletions
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3
drivers/s390/scsi/zfcp_fsf.c
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@ -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;