From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: Sun, 14 Jul 2013 23:05:52 +0000 (-0700)
Subject: sysfs.h: add ATTRIBUTE_GROUPS() macro
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=f2f37f58b1b933b06d6d84e80a31a1b500fb0db2;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

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>
---

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;