diff options
Diffstat (limited to 'drivers/s390/block/dasd_devmap.c')
| -rw-r--r-- | drivers/s390/block/dasd_devmap.c | 36 |
1 files changed, 35 insertions, 1 deletions
diff --git a/drivers/s390/block/dasd_devmap.c b/drivers/s390/block/dasd_devmap.c index b2b8c18eeced..c196827c228f 100644 --- a/drivers/s390/block/dasd_devmap.c +++ b/drivers/s390/block/dasd_devmap.c @@ -952,6 +952,39 @@ static DEVICE_ATTR(raw_track_access, 0644, dasd_use_raw_show, dasd_use_raw_store); static ssize_t +dasd_safe_offline_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct ccw_device *cdev = to_ccwdev(dev); + struct dasd_device *device; + int rc; + + device = dasd_device_from_cdev(cdev); + if (IS_ERR(device)) { + rc = PTR_ERR(device); + goto out; + } + + if (test_bit(DASD_FLAG_OFFLINE, &device->flags) || + test_bit(DASD_FLAG_SAFE_OFFLINE_RUNNING, &device->flags)) { + /* Already doing offline processing */ + dasd_put_device(device); + rc = -EBUSY; + goto out; + } + + set_bit(DASD_FLAG_SAFE_OFFLINE, &device->flags); + dasd_put_device(device); + + rc = ccw_device_set_offline(cdev); + +out: + return rc ? rc : count; +} + +static DEVICE_ATTR(safe_offline, 0200, NULL, dasd_safe_offline_store); + +static ssize_t dasd_discipline_show(struct device *dev, struct device_attribute *attr, char *buf) { @@ -1320,6 +1353,7 @@ static struct attribute * dasd_attrs[] = { &dev_attr_expires.attr, &dev_attr_reservation_policy.attr, &dev_attr_last_known_reservation_state.attr, + &dev_attr_safe_offline.attr, NULL, }; @@ -1344,7 +1378,7 @@ dasd_get_feature(struct ccw_device *cdev, int feature) /* * Set / reset given feature. - * Flag indicates wether to set (!=0) or the reset (=0) the feature. + * Flag indicates whether to set (!=0) or the reset (=0) the feature. */ int dasd_set_feature(struct ccw_device *cdev, int feature, int flag) |