[SCSI] zfcp: cleanup unit 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 16:13:49 +02:00 committed by James Bottomley
parent 83d4e1c33d
commit 86bdf218a7
4 changed files with 9 additions and 11 deletions

View File

@ -129,7 +129,7 @@ static void zfcp_ccw_remove(struct ccw_device *cdev)
zfcp_ccw_adapter_put(adapter); /* put from zfcp_ccw_adapter_by_cdev */
list_for_each_entry_safe(unit, u, &unit_remove_lh, list)
zfcp_device_unregister(&unit->dev, &zfcp_sysfs_unit_attrs);
device_unregister(&unit->dev);
list_for_each_entry_safe(port, p, &port_remove_lh, list)
device_unregister(&port->dev);

View File

@ -158,7 +158,7 @@ extern void zfcp_scsi_set_prot(struct zfcp_adapter *);
extern void zfcp_scsi_dif_sense_error(struct scsi_cmnd *, int);
/* zfcp_sysfs.c */
extern struct attribute_group zfcp_sysfs_unit_attrs;
extern const struct attribute_group *zfcp_unit_attr_groups[];
extern struct attribute_group zfcp_sysfs_adapter_attrs;
extern const struct attribute_group *zfcp_port_attr_groups[];
extern struct mutex zfcp_sysfs_port_units_mutex;

View File

@ -357,10 +357,13 @@ static struct attribute *zfcp_unit_attrs[] = {
&dev_attr_unit_access_readonly.attr,
NULL
};
struct attribute_group zfcp_sysfs_unit_attrs = {
static struct attribute_group zfcp_unit_attr_group = {
.attrs = zfcp_unit_attrs,
};
const struct attribute_group *zfcp_unit_attr_groups[] = {
&zfcp_unit_attr_group,
NULL,
};
#define ZFCP_DEFINE_LATENCY_ATTR(_name) \
static ssize_t \

View File

@ -145,6 +145,7 @@ int zfcp_unit_add(struct zfcp_port *port, u64 fcp_lun)
unit->fcp_lun = fcp_lun;
unit->dev.parent = &port->dev;
unit->dev.release = zfcp_unit_release;
unit->dev.groups = zfcp_unit_attr_groups;
INIT_WORK(&unit->scsi_work, zfcp_unit_scsi_scan_work);
if (dev_set_name(&unit->dev, "0x%016llx",
@ -160,12 +161,6 @@ int zfcp_unit_add(struct zfcp_port *port, u64 fcp_lun)
goto out;
}
if (sysfs_create_group(&unit->dev.kobj, &zfcp_sysfs_unit_attrs)) {
device_unregister(&unit->dev);
retval = -EINVAL;
goto out;
}
atomic_inc(&port->units); /* under zfcp_sysfs_port_units_mutex ! */
write_lock_irq(&port->unit_list_lock);
@ -254,7 +249,7 @@ int zfcp_unit_remove(struct zfcp_port *port, u64 fcp_lun)
put_device(&unit->dev);
zfcp_device_unregister(&unit->dev, &zfcp_sysfs_unit_attrs);
device_unregister(&unit->dev);
return 0;
}