diff options
Diffstat (limited to 'drivers/s390/scsi')
| -rw-r--r-- | drivers/s390/scsi/zfcp_aux.c | 65 |
1 files changed, 29 insertions, 36 deletions
diff --git a/drivers/s390/scsi/zfcp_aux.c b/drivers/s390/scsi/zfcp_aux.c index a7954443ec19..1be6bf7e8ce6 100644 --- a/drivers/s390/scsi/zfcp_aux.c +++ b/drivers/s390/scsi/zfcp_aux.c @@ -274,6 +274,13 @@ struct zfcp_unit *zfcp_unit_enqueue(struct zfcp_port *port, u64 fcp_lun) { struct zfcp_unit *unit; + read_lock_irq(&zfcp_data.config_lock); + if (zfcp_get_unit_by_lun(port, fcp_lun)) { + read_unlock_irq(&zfcp_data.config_lock); + return ERR_PTR(-EINVAL); + } + read_unlock_irq(&zfcp_data.config_lock); + unit = kzalloc(sizeof(struct zfcp_unit), GFP_KERNEL); if (!unit) return ERR_PTR(-ENOMEM); @@ -285,8 +292,11 @@ struct zfcp_unit *zfcp_unit_enqueue(struct zfcp_port *port, u64 fcp_lun) unit->port = port; unit->fcp_lun = fcp_lun; - dev_set_name(&unit->sysfs_device, "0x%016llx", - (unsigned long long) fcp_lun); + if (dev_set_name(&unit->sysfs_device, "0x%016llx", + (unsigned long long) fcp_lun)) { + kfree(unit); + return ERR_PTR(-ENOMEM); + } unit->sysfs_device.parent = &port->sysfs_device; unit->sysfs_device.release = zfcp_sysfs_unit_release; dev_set_drvdata(&unit->sysfs_device, unit); @@ -302,13 +312,6 @@ struct zfcp_unit *zfcp_unit_enqueue(struct zfcp_port *port, u64 fcp_lun) unit->latencies.cmd.channel.min = 0xFFFFFFFF; unit->latencies.cmd.fabric.min = 0xFFFFFFFF; - read_lock_irq(&zfcp_data.config_lock); - if (zfcp_get_unit_by_lun(port, fcp_lun)) { - read_unlock_irq(&zfcp_data.config_lock); - goto err_out_free; - } - read_unlock_irq(&zfcp_data.config_lock); - if (device_register(&unit->sysfs_device)) { put_device(&unit->sysfs_device); return ERR_PTR(-EINVAL); @@ -317,7 +320,7 @@ struct zfcp_unit *zfcp_unit_enqueue(struct zfcp_port *port, u64 fcp_lun) if (sysfs_create_group(&unit->sysfs_device.kobj, &zfcp_sysfs_unit_attrs)) { device_unregister(&unit->sysfs_device); - return ERR_PTR(-EIO); + return ERR_PTR(-EINVAL); } zfcp_unit_get(unit); @@ -332,10 +335,6 @@ struct zfcp_unit *zfcp_unit_enqueue(struct zfcp_port *port, u64 fcp_lun) zfcp_port_get(port); return unit; - -err_out_free: - kfree(unit); - return ERR_PTR(-EINVAL); } /** @@ -642,7 +641,13 @@ struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *adapter, u64 wwpn, u32 status, u32 d_id) { struct zfcp_port *port; - int retval; + + read_lock_irq(&zfcp_data.config_lock); + if (zfcp_get_port_by_wwpn(adapter, wwpn)) { + read_unlock_irq(&zfcp_data.config_lock); + return ERR_PTR(-EINVAL); + } + read_unlock_irq(&zfcp_data.config_lock); port = kzalloc(sizeof(struct zfcp_port), GFP_KERNEL); if (!port) @@ -663,31 +668,24 @@ struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *adapter, u64 wwpn, atomic_set_mask(status | ZFCP_STATUS_COMMON_REMOVE, &port->status); atomic_set(&port->refcount, 0); - dev_set_name(&port->sysfs_device, "0x%016llx", - (unsigned long long)wwpn); + if (dev_set_name(&port->sysfs_device, "0x%016llx", + (unsigned long long)wwpn)) { + kfree(port); + return ERR_PTR(-ENOMEM); + } port->sysfs_device.parent = &adapter->ccw_device->dev; - port->sysfs_device.release = zfcp_sysfs_port_release; dev_set_drvdata(&port->sysfs_device, port); - read_lock_irq(&zfcp_data.config_lock); - if (zfcp_get_port_by_wwpn(adapter, wwpn)) { - read_unlock_irq(&zfcp_data.config_lock); - goto err_out_free; - } - read_unlock_irq(&zfcp_data.config_lock); - if (device_register(&port->sysfs_device)) { put_device(&port->sysfs_device); - goto err_out; + return ERR_PTR(-EINVAL); } - retval = sysfs_create_group(&port->sysfs_device.kobj, - &zfcp_sysfs_port_attrs); - - if (retval) { + if (sysfs_create_group(&port->sysfs_device.kobj, + &zfcp_sysfs_port_attrs)) { device_unregister(&port->sysfs_device); - goto err_out; + return ERR_PTR(-EINVAL); } zfcp_port_get(port); @@ -701,11 +699,6 @@ struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *adapter, u64 wwpn, zfcp_adapter_get(adapter); return port; - -err_out_free: - kfree(port); -err_out: - return ERR_PTR(-EINVAL); } /** |