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[SCSI] zfcp: Call get_device on port before calling put_device 

zfcp_unit_release calls put_device on the port. Ensure that get_device
has been called before possibly triggering the release function
through put_device or device_unregister.

Reviewed-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Christof Schmitt 2010-10-05 17:12:54 +02:00 committed by James Bottomley
parent 0df138476c
commit 1a9708cd35
1 changed files with 2 additions and 2 deletions
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4
drivers/s390/scsi/zfcp_unit.c
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@ -142,6 +142,8 @@ int zfcp_unit_add(struct zfcp_port *port, u64 fcp_lun)
return -ENOMEM;
}
get_device(&port->dev);
if (device_register(&unit->dev)) {
put_device(&unit->dev);
return -ENOMEM;
@ -152,8 +154,6 @@ int zfcp_unit_add(struct zfcp_port *port, u64 fcp_lun)
return -EINVAL;
}
get_device(&port->dev);
write_lock_irq(&port->unit_list_lock);
list_add_tail(&unit->list, &port->unit_list);
write_unlock_irq(&port->unit_list_lock);