linux-kernel - [PATCH] driver core: add CLASS_ATTR

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Message-ID: <20161122173149.GA2841@kroah.com>
Date:   Tue, 22 Nov 2016 18:31:49 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Subject: [PATCH] driver core: add CLASS_ATTR_WO()

Some class subsystems are open-coding CLASS_ATTR_WO because the driver
core never provided it.  Add the macro to device.h so that we can go
around and fix up the individual subsystems as needed.

Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 include/linux/device.h |    2 ++
 1 file changed, 2 insertions(+)

--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -465,6 +465,8 @@ struct class_attribute {
 	struct class_attribute class_attr_##_name = __ATTR_RW(_name)
 #define CLASS_ATTR_RO(_name) \
 	struct class_attribute class_attr_##_name = __ATTR_RO(_name)
+#define CLASS_ATTR_WO(_name) \
+	struct class_attribute class_attr_##_name = __ATTR_WO(_name)
 
 extern int __must_check class_create_file_ns(struct class *class,
 					     const struct class_attribute *attr,