diff options
Diffstat (limited to '')
| -rw-r--r-- | drivers/s390/scsi/zfcp_sysfs.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/drivers/s390/scsi/zfcp_sysfs.c b/drivers/s390/scsi/zfcp_sysfs.c index ae8e9137f448..494b9fe9cc94 100644 --- a/drivers/s390/scsi/zfcp_sysfs.c +++ b/drivers/s390/scsi/zfcp_sysfs.c @@ -326,6 +326,50 @@ static ssize_t zfcp_sysfs_port_remove_store(struct device *dev, static ZFCP_DEV_ATTR(adapter, port_remove, S_IWUSR, NULL, zfcp_sysfs_port_remove_store); +static ssize_t +zfcp_sysfs_adapter_diag_max_age_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(to_ccwdev(dev)); + ssize_t rc; + + if (!adapter) + return -ENODEV; + + /* ceil(log(2^64 - 1) / log(10)) = 20 */ + rc = scnprintf(buf, 20 + 2, "%lu\n", adapter->diagnostics->max_age); + + zfcp_ccw_adapter_put(adapter); + return rc; +} + +static ssize_t +zfcp_sysfs_adapter_diag_max_age_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(to_ccwdev(dev)); + unsigned long max_age; + ssize_t rc; + + if (!adapter) + return -ENODEV; + + rc = kstrtoul(buf, 10, &max_age); + if (rc != 0) + goto out; + + adapter->diagnostics->max_age = max_age; + + rc = count; +out: + zfcp_ccw_adapter_put(adapter); + return rc; +} +static ZFCP_DEV_ATTR(adapter, diag_max_age, 0644, + zfcp_sysfs_adapter_diag_max_age_show, + zfcp_sysfs_adapter_diag_max_age_store); + static struct attribute *zfcp_adapter_attrs[] = { &dev_attr_adapter_failed.attr, &dev_attr_adapter_in_recovery.attr, @@ -338,6 +382,7 @@ static struct attribute *zfcp_adapter_attrs[] = { &dev_attr_adapter_lic_version.attr, &dev_attr_adapter_status.attr, &dev_attr_adapter_hardware_version.attr, + &dev_attr_adapter_diag_max_age.attr, NULL }; |