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| author | Scott Teel <scott.teel@hp.com> | 2014-02-18 20:55:54 +0100 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2014-03-15 18:19:04 +0100 |
| commit | c1988684bb0b185608396d693aff83f4294d593a (patch) | |
| tree | aeb7528969c6988cfdc33bfbadfd9c12e4d806c8 /drivers/scsi/hpsa.c | |
| parent | [SCSI] hpsa: do not rescan controllers known to be locked up (diff) | |
| download | linux-c1988684bb0b185608396d693aff83f4294d593a.tar.xz linux-c1988684bb0b185608396d693aff83f4294d593a.zip | |
[SCSI] hpsa: add hp_ssd_smart_path_enabled sysfs attribute
Signed-off-by: Scott Teel <scott.teel@hp.com>
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.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 67e059cd9e57..bbdd8bed4266 100644 --- a/drivers/scsi/hpsa.c +++ b/drivers/scsi/hpsa.c @@ -508,10 +508,34 @@ static ssize_t unique_id_show(struct device *dev, sn[12], sn[13], sn[14], sn[15]); } +static ssize_t host_show_hp_ssd_smart_path_enabled(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; + int offload_enabled; + + sdev = to_scsi_device(dev); + h = sdev_to_hba(sdev); + spin_lock_irqsave(&h->lock, flags); + hdev = sdev->hostdata; + if (!hdev) { + spin_unlock_irqrestore(&h->lock, flags); + return -ENODEV; + } + offload_enabled = hdev->offload_enabled; + spin_unlock_irqrestore(&h->lock, flags); + return snprintf(buf, 20, "%d\n", offload_enabled); +} + 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(hp_ssd_smart_path_enabled, S_IRUGO, + host_show_hp_ssd_smart_path_enabled, NULL); static DEVICE_ATTR(firmware_revision, S_IRUGO, host_show_firmware_revision, NULL); static DEVICE_ATTR(commands_outstanding, S_IRUGO, @@ -525,6 +549,7 @@ static struct device_attribute *hpsa_sdev_attrs[] = { &dev_attr_raid_level, &dev_attr_lunid, &dev_attr_unique_id, + &dev_attr_hp_ssd_smart_path_enabled, NULL, }; |