sysfs.h: add ATTRIBUTE_GROUPS() macro

To make it easier for driver subsystems to work with attribute groups,
create the ATTRIBUTE_GROUPS macro to remove some of the repetitive
typing for the most common use for attribute groups.

Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 9 insertions, 0 deletions

diff --git a/include/linux/sysfs.h b/include/linux/sysfs.h
index 9cd20c8404e5..f62ff01e5f59 100644
--- a/include/linux/sysfs.h
+++ b/include/linux/sysfs.h
@@ -94,6 +94,15 @@ struct attribute_group {
 #define __ATTR_IGNORE_LOCKDEP   __ATTR
 #endif
 
+#define ATTRIBUTE_GROUPS(name)                                  \
+static const struct attribute_group name##_group = {            \
+        .attrs = name##_attrs,                                  \
+};                                                              \
+static const struct attribute_group *name##_groups[] = {        \
+        &name##_group,                                          \
+        NULL,                                                   \
+}
+
 #define attr_name(_attr) (_attr).attr.name
 
 struct file;