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[SCSI] zfcp: avoid double notify in lowmem scenario 

In a LOWMEM condition an ERP notification would have been sent twice
causing an unpredictable behaviour of the ERP.

Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
This commit is contained in:
Swen Schillig 2009-07-13 15:06:12 +02:00 committed by James Bottomley
parent 379d6bf657
commit 17a093ef01
1 changed files with 10 additions and 4 deletions
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12
drivers/s390/scsi/zfcp_erp.c
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@ -848,11 +848,17 @@ void zfcp_erp_port_strategy_open_lookup(struct work_struct *work)
gid_pn_work); gid_pn_work);
retval = zfcp_fc_ns_gid_pn(&port->erp_action); retval = zfcp_fc_ns_gid_pn(&port->erp_action);
if (retval == -ENOMEM) if (!retval) {
zfcp_erp_notify(&port->erp_action, ZFCP_STATUS_ERP_LOWMEM);
port->erp_action.step = ZFCP_ERP_STEP_NAMESERVER_LOOKUP; port->erp_action.step = ZFCP_ERP_STEP_NAMESERVER_LOOKUP;
if (retval) goto out;
}
if (retval == -ENOMEM) {
zfcp_erp_notify(&port->erp_action, ZFCP_STATUS_ERP_LOWMEM);
goto out;
}
/* all other error condtions */
zfcp_erp_notify(&port->erp_action, 0); zfcp_erp_notify(&port->erp_action, 0);
out:
zfcp_port_put(port); zfcp_port_put(port);
} }