linux-kernel - [PATCH v2 3/7] sysfs.h: add BIN

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Date:	Wed, 10 Jul 2013 17:36:01 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	oliver+list@...inagl.nl, linux@...ck-us.net, khali@...ux-fr.org,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: [PATCH v2 3/7] sysfs.h: add BIN_ATTR macro

This makes it easier to create static binary attributes, which is needed
in a number of drivers, instead of "open coding" them.

Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 include/linux/sysfs.h | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/include/linux/sysfs.h b/include/linux/sysfs.h
index f62ff01..d50a96b 100644
--- a/include/linux/sysfs.h
+++ b/include/linux/sysfs.h
@@ -132,6 +132,15 @@ struct bin_attribute {
  */
 #define sysfs_bin_attr_init(bin_attr) sysfs_attr_init(&(bin_attr)->attr)
 
+/* macro to create static binary attributes easier */
+#define BIN_ATTR(_name, _mode, _read, _write, _size)		\
+struct bin_attribute bin_attr_##_name = {			\
+	.attr = {.name = __stringify(_name), .mode = _mode },	\
+	.read	= _read,					\
+	.write	= _write,					\
+	.size	= _size,					\
+}
+
 struct sysfs_ops {
 	ssize_t	(*show)(struct kobject *, struct attribute *,char *);
 	ssize_t	(*store)(struct kobject *,struct attribute *,const char *, size_t);
-- 
1.8.3.rc0.20.gb99dd2e

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