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[SCSI] zfcp: cleanup port sysfs attribute usage 

Let the driver core handle device attribute creation and removal. This
will simplify the code and eliminates races between attribute
availability and userspace notification via uevents.

Reviewed-by: Steffen Maier <maier@linux.vnet.ibm.com>
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Sebastian Ott 2013-04-26 16:13:48 +02:00 committed by James Bottomley
parent 8377dbc3cd
commit 83d4e1c33d
5 changed files with 10 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/s390/scsi/zfcp_aux.c
View File

@ -530,6 +530,7 @@ struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *adapter, u64 wwpn,
port->wwpn = wwpn;
port->rport_task = RPORT_NONE;
port->dev.parent = &adapter->ccw_device->dev;
port->dev.groups = zfcp_port_attr_groups;
port->dev.release = zfcp_port_release;
if (dev_set_name(&port->dev, "0x%016llx", (unsigned long long)wwpn)) {
@ -543,10 +544,6 @@ struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *adapter, u64 wwpn,
goto err_out;
}
if (sysfs_create_group(&port->dev.kobj,
&zfcp_sysfs_port_attrs))
goto err_out_put;
write_lock_irq(&adapter->port_list_lock);
list_add_tail(&port->list, &adapter->port_list);
write_unlock_irq(&adapter->port_list_lock);
@ -555,8 +552,6 @@ struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *adapter, u64 wwpn,
return port;
err_out_put:
device_unregister(&port->dev);
err_out:
zfcp_ccw_adapter_put(adapter);
return ERR_PTR(retval);

2
drivers/s390/scsi/zfcp_ccw.c
View File

@ -132,7 +132,7 @@ static void zfcp_ccw_remove(struct ccw_device *cdev)
zfcp_device_unregister(&unit->dev, &zfcp_sysfs_unit_attrs);
list_for_each_entry_safe(port, p, &port_remove_lh, list)
zfcp_device_unregister(&port->dev, &zfcp_sysfs_port_attrs);
device_unregister(&port->dev);
zfcp_adapter_unregister(adapter);
}

2
drivers/s390/scsi/zfcp_ext.h
View File

@ -160,7 +160,7 @@ extern void zfcp_scsi_dif_sense_error(struct scsi_cmnd *, int);
/* zfcp_sysfs.c */
extern struct attribute_group zfcp_sysfs_unit_attrs;
extern struct attribute_group zfcp_sysfs_adapter_attrs;
extern struct attribute_group zfcp_sysfs_port_attrs;
extern const struct attribute_group *zfcp_port_attr_groups[];
extern struct mutex zfcp_sysfs_port_units_mutex;
extern struct device_attribute *zfcp_sysfs_sdev_attrs[];
extern struct device_attribute *zfcp_sysfs_shost_attrs[];

2
drivers/s390/scsi/zfcp_fc.c
View File

@ -668,7 +668,7 @@ static int zfcp_fc_eval_gpn_ft(struct zfcp_fc_req *fc_req,
list_for_each_entry_safe(port, tmp, &remove_lh, list) {
zfcp_erp_port_shutdown(port, 0, "fcegpf2");
zfcp_device_unregister(&port->dev, &zfcp_sysfs_port_attrs);
device_unregister(&port->dev);
}
return ret;

12
drivers/s390/scsi/zfcp_sysfs.c
View File

@ -268,7 +268,7 @@ static ssize_t zfcp_sysfs_port_remove_store(struct device *dev,
put_device(&port->dev);
zfcp_erp_port_shutdown(port, 0, "syprs_1");
zfcp_device_unregister(&port->dev, &zfcp_sysfs_port_attrs);
device_unregister(&port->dev);
out:
zfcp_ccw_adapter_put(adapter);
return retval ? retval : (ssize_t) count;
@ -340,13 +340,13 @@ static struct attribute *zfcp_port_attrs[] = {
&dev_attr_port_access_denied.attr,
NULL
};
/**
* zfcp_sysfs_port_attrs - sysfs attributes for all other ports
*/
struct attribute_group zfcp_sysfs_port_attrs = {
static struct attribute_group zfcp_port_attr_group = {
.attrs = zfcp_port_attrs,
};
const struct attribute_group *zfcp_port_attr_groups[] = {
&zfcp_port_attr_group,
NULL,
};
static struct attribute *zfcp_unit_attrs[] = {
&dev_attr_unit_failed.attr,