diff options
| -rw-r--r-- | drivers/misc/enclosure.c | 13 | ||||
| -rw-r--r-- | drivers/scsi/ses.c | 9 | ||||
| -rw-r--r-- | include/linux/enclosure.h | 1 |
3 files changed, 23 insertions, 0 deletions
diff --git a/drivers/misc/enclosure.c b/drivers/misc/enclosure.c index e18278aa6bbb..958ee988a1e1 100644 --- a/drivers/misc/enclosure.c +++ b/drivers/misc/enclosure.c @@ -432,8 +432,21 @@ static ssize_t components_show(struct device *cdev, } static DEVICE_ATTR_RO(components); +static ssize_t id_show(struct device *cdev, + struct device_attribute *attr, + char *buf) +{ + struct enclosure_device *edev = to_enclosure_device(cdev); + + if (edev->cb->show_id) + return edev->cb->show_id(edev, buf); + return -EINVAL; +} +static DEVICE_ATTR_RO(id); + static struct attribute *enclosure_class_attrs[] = { &dev_attr_components.attr, + &dev_attr_id.attr, NULL, }; ATTRIBUTE_GROUPS(enclosure_class); diff --git a/drivers/scsi/ses.c b/drivers/scsi/ses.c index 6662b0ca6cfd..1041556cdbf3 100644 --- a/drivers/scsi/ses.c +++ b/drivers/scsi/ses.c @@ -258,6 +258,14 @@ static int ses_set_active(struct enclosure_device *edev, return ses_set_page2_descriptor(edev, ecomp, desc); } +static int ses_show_id(struct enclosure_device *edev, char *buf) +{ + struct ses_device *ses_dev = edev->scratch; + unsigned long long id = get_unaligned_be64(ses_dev->page1+8+4); + + return sprintf(buf, "%#llx\n", id); +} + static struct enclosure_component_callbacks ses_enclosure_callbacks = { .get_fault = ses_get_fault, .set_fault = ses_set_fault, @@ -265,6 +273,7 @@ static struct enclosure_component_callbacks ses_enclosure_callbacks = { .get_locate = ses_get_locate, .set_locate = ses_set_locate, .set_active = ses_set_active, + .show_id = ses_show_id, }; struct ses_host_edev { diff --git a/include/linux/enclosure.h b/include/linux/enclosure.h index a835d335b924..807622b252a4 100644 --- a/include/linux/enclosure.h +++ b/include/linux/enclosure.h @@ -79,6 +79,7 @@ struct enclosure_component_callbacks { int (*set_locate)(struct enclosure_device *, struct enclosure_component *, enum enclosure_component_setting); + int (*show_id)(struct enclosure_device *, char *buf); }; |