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| author | Joseph T Handzik <joseph.t.handzik@hpe.com> | 2016-04-28 00:13:33 +0200 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2016-04-30 01:08:24 +0200 |
| commit | ded1be4ae6b8e279ab43a5fe2069dd60bb836d30 (patch) | |
| tree | 056bd607aa6393b0e18d30795615c49ef8b706ef /drivers/scsi/hpsa.c | |
| parent | hpsa: correct initialization order issue (diff) | |
| download | linux-ded1be4ae6b8e279ab43a5fe2069dd60bb836d30.tar.xz linux-ded1be4ae6b8e279ab43a5fe2069dd60bb836d30.zip | |
hpsa: add sas_address to sysfs device attibute
There have been companies requesting a sysfs entry
to obtain the sas address of device.
Reviewed-by: Scott Teel <scott.teel@microsemi.com>
Reviewed-by: Kevin Barnett <kevin.barnett@microsemi.com>
Signed-off-by: Don Brace <don.brace@microsemi.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to '')
| -rw-r--r-- | drivers/scsi/hpsa.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c index 9baf04e13a70..a677dfe09998 100644 --- a/drivers/scsi/hpsa.c +++ b/drivers/scsi/hpsa.c @@ -728,6 +728,29 @@ static ssize_t unique_id_show(struct device *dev, sn[12], sn[13], sn[14], sn[15]); } +static ssize_t sas_address_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct ctlr_info *h; + struct scsi_device *sdev; + struct hpsa_scsi_dev_t *hdev; + unsigned long flags; + u64 sas_address; + + sdev = to_scsi_device(dev); + h = sdev_to_hba(sdev); + spin_lock_irqsave(&h->lock, flags); + hdev = sdev->hostdata; + if (!hdev || is_logical_device(hdev) || !hdev->expose_device) { + spin_unlock_irqrestore(&h->lock, flags); + return -ENODEV; + } + sas_address = hdev->sas_address; + spin_unlock_irqrestore(&h->lock, flags); + + return snprintf(buf, PAGE_SIZE, "0x%016llx\n", sas_address); +} + static ssize_t host_show_hp_ssd_smart_path_enabled(struct device *dev, struct device_attribute *attr, char *buf) { @@ -840,6 +863,7 @@ static DEVICE_ATTR(raid_level, S_IRUGO, raid_level_show, NULL); static DEVICE_ATTR(lunid, S_IRUGO, lunid_show, NULL); static DEVICE_ATTR(unique_id, S_IRUGO, unique_id_show, NULL); static DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan); +static DEVICE_ATTR(sas_address, S_IRUGO, sas_address_show, NULL); static DEVICE_ATTR(hp_ssd_smart_path_enabled, S_IRUGO, host_show_hp_ssd_smart_path_enabled, NULL); static DEVICE_ATTR(path_info, S_IRUGO, path_info_show, NULL); @@ -865,6 +889,7 @@ static struct device_attribute *hpsa_sdev_attrs[] = { &dev_attr_unique_id, &dev_attr_hp_ssd_smart_path_enabled, &dev_attr_path_info, + &dev_attr_sas_address, NULL, }; |