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authorSebastian Ott <sebott@linux.vnet.ibm.com>2016-10-11 18:21:36 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2017-01-16 07:27:52 +0100
commit64dfdd4b539f0d2e552e8b83aab119c8eafbbc83 (patch)
treebe99e802d9f32b6e77f5988bbd89e4265eab347c /drivers/s390/cio
parent15a2044d7f3c1ee16de92a45f035f3abbe1bb885 (diff)
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>
Diffstat (limited to 'drivers/s390/cio')
-rw-r--r--drivers/s390/cio/css.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c
index 8b608e0d2d26..8faffed61092 100644
--- a/drivers/s390/cio/css.c
+++ b/drivers/s390/cio/css.c
@@ -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,
};