class: Implement support for class attrs in tagged sysfs directories.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/base/class.c b/drivers/base/class.c
index 4f1df2e..b80d91c 100644
--- a/drivers/base/class.c
+++ b/drivers/base/class.c
@@ -47,6 +47,18 @@
return ret;
}
+static const void *class_attr_namespace(struct kobject *kobj,
+ const struct attribute *attr)
+{
+ struct class_attribute *class_attr = to_class_attr(attr);
+ struct subsys_private *cp = to_subsys_private(kobj);
+ const void *ns = NULL;
+
+ if (class_attr->namespace)
+ ns = class_attr->namespace(cp->class, class_attr);
+ return ns;
+}
+
static void class_release(struct kobject *kobj)
{
struct subsys_private *cp = to_subsys_private(kobj);
@@ -72,8 +84,9 @@
}
static const struct sysfs_ops class_sysfs_ops = {
- .show = class_attr_show,
- .store = class_attr_store,
+ .show = class_attr_show,
+ .store = class_attr_store,
+ .namespace = class_attr_namespace,
};
static struct kobj_type class_ktype = {
diff --git a/include/linux/device.h b/include/linux/device.h
index c20dfbf..ea70bb2 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -350,6 +350,8 @@
char *buf);
ssize_t (*store)(struct class *class, struct class_attribute *attr,
const char *buf, size_t count);
+ const void *(*namespace)(struct class *class,
+ const struct class_attribute *attr);
};
#define CLASS_ATTR(_name, _mode, _show, _store) \