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s390/cio: export real cssid 

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Reviewed-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Sebastian Ott 2016-10-11 18:21:36 +02:00 committed by Martin Schwidefsky
parent 15a2044d7f
commit 64dfdd4b53
1 changed files with 22 additions and 0 deletions
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22
drivers/s390/cio/css.c
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@ -722,6 +722,18 @@ static void channel_subsystem_release(struct device *dev)
kfree(css);
}
static ssize_t real_cssid_show(struct device *dev, struct device_attribute *a,
char *buf)
{
struct channel_subsystem *css = to_css(dev);
if (css->cssid < 0)
return -EINVAL;
return sprintf(buf, "%x\n", css->cssid);
}
static DEVICE_ATTR_RO(real_cssid);
static ssize_t cm_enable_show(struct device *dev, struct device_attribute *a,
char *buf)
{
@ -766,6 +778,15 @@ static umode_t cm_enable_mode(struct kobject *kobj, struct attribute *attr,
return css_chsc_characteristics.secm ? attr->mode : 0;
}
static struct attribute *cssdev_attrs[] = {
&dev_attr_real_cssid.attr,
NULL,
};
static struct attribute_group cssdev_attr_group = {
.attrs = cssdev_attrs,
};
static struct attribute *cssdev_cm_attrs[] = {
&dev_attr_cm_enable.attr,
NULL,
@ -777,6 +798,7 @@ static struct attribute_group cssdev_cm_attr_group = {
};
static const struct attribute_group *cssdev_attr_groups[] = {
&cssdev_attr_group,
&cssdev_cm_attr_group,
NULL,
};