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driver core: add CLASS_ATTR_WO()

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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@linuxfoundation.org>
This commit is contained in:
Greg Kroah-Hartman committed 2016-11-24 16:08:13 +01:00
1 parent dfea747d2a
commit 2027cbcf49
1 file changed
+2
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include/linux/device.h
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@@ -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,