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hpsa: allow lockup detected to be viewed via sysfs 

expose a detected lockup via sysfs

Reviewed-by: Scott Teel <scott.teel@pmcs.com>
Reviewed-by: Kevin Barnett <kevin.barnett@pmcs.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Reviewed-by: Hannes Reinecke <hare@Suse.de>
Signed-off-by: Don Brace <don.brace@pmcs.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
hifive-unleashed-5.1
Stephen Cameron 2015-04-23 09:32:22 -05:00 committed by James Bottomley
parent 9437ac43ed
commit e985c58f51
1 changed files with 17 additions and 0 deletions
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17
drivers/scsi/hpsa.c
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@ -351,6 +351,20 @@ static int check_for_busy(struct ctlr_info *h, struct CommandList *c)
return 1;
}
static u32 lockup_detected(struct ctlr_info *h);
static ssize_t host_show_lockup_detected(struct device *dev,
struct device_attribute *attr, char *buf)
{
int ld;
struct ctlr_info *h;
struct Scsi_Host *shost = class_to_shost(dev);
h = shost_to_hba(shost);
ld = lockup_detected(h);
return sprintf(buf, "ld=%d\n", ld);
}
static ssize_t host_store_hp_ssd_smart_path_status(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
@ -698,12 +712,15 @@ static DEVICE_ATTR(transport_mode, S_IRUGO,
host_show_transport_mode, NULL);
static DEVICE_ATTR(resettable, S_IRUGO,
host_show_resettable, NULL);
static DEVICE_ATTR(lockup_detected, S_IRUGO,
host_show_lockup_detected, NULL);
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,
&dev_attr_lockup_detected,
NULL,
};