s390/cio: export real cssid (64dfdd4b) · Commits · 戴 / test

drivers/s390/cio/css.c

+22 −0

Original line number	Diff line number	Diff line
		@@ -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,
		};