driver core: device.h: add RW and RO attribute macros

Make it easier to create attributes without having to always audit the
mode settings.

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, 21 insertions, 7 deletions

diff --git a/include/linux/device.h b/include/linux/device.h
index bcf8c0d4cd98..f207a8f49f80 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -47,7 +47,11 @@ struct bus_attribute {
 };
 
 #define BUS_ATTR(_name, _mode, _show, _store)   \
-struct bus_attribute bus_attr_##_name = __ATTR(_name, _mode, _show, _store)
+        struct bus_attribute bus_attr_##_name = __ATTR(_name, _mode, _show, _store)
+#define BUS_ATTR_RW(_name) \
+        struct bus_attribute bus_attr_##_name = __ATTR_RW(_name)
+#define BUS_ATTR_RO(_name) \
+        struct bus_attribute bus_attr_##_name = __ATTR_RO(_name)
 
 extern int __must_check bus_create_file(struct bus_type *,
                                         struct bus_attribute *);
@@ -261,9 +265,12 @@ struct driver_attribute {
                          size_t count);
 };
 
-#define DRIVER_ATTR(_name, _mode, _show, _store)        \
-struct driver_attribute driver_attr_##_name =           \
-        __ATTR(_name, _mode, _show, _store)
+#define DRIVER_ATTR(_name, _mode, _show, _store) \
+        struct driver_attribute driver_attr_##_name = __ATTR(_name, _mode, _show, _store)
+#define DRIVER_ATTR_RW(_name) \
+        struct driver_attribute driver_attr_##_name = __ATTR_RW(_name)
+#define DRIVER_ATTR_RO(_name) \
+        struct driver_attribute driver_attr_##_name = __ATTR_RO(_name)
 
 extern int __must_check driver_create_file(struct device_driver *driver,
                                         const struct driver_attribute *attr);
@@ -414,8 +421,12 @@ struct class_attribute {
                                  const struct class_attribute *attr);
 };
 
-#define CLASS_ATTR(_name, _mode, _show, _store)                 \
-struct class_attribute class_attr_##_name = __ATTR(_name, _mode, _show, _store)
+#define CLASS_ATTR(_name, _mode, _show, _store) \
+        struct class_attribute class_attr_##_name = __ATTR(_name, _mode, _show, _store)
+#define CLASS_ATTR_RW(_name) \
+        struct class_attribute class_attr_##_name = __ATTR_RW(_name)
+#define CLASS_ATTR_RO(_name) \
+        struct class_attribute class_attr_##_name = __ATTR_RO(_name)
 
 extern int __must_check class_create_file(struct class *class,
                                           const struct class_attribute *attr);
@@ -423,7 +434,6 @@ extern void class_remove_file(struct class *class,
                               const struct class_attribute *attr);
 
 /* Simple class attribute that is just a static string */
-
 struct class_attribute_string {
         struct class_attribute attr;
         char *str;
@@ -512,6 +522,10 @@ ssize_t device_store_bool(struct device *dev, struct device_attribute *attr,
 
 #define DEVICE_ATTR(_name, _mode, _show, _store) \
         struct device_attribute dev_attr_##_name = __ATTR(_name, _mode, _show, _store)
+#define DEVICE_ATTR_RW(_name) \
+        struct device_attribute dev_attr_##_name = __ATTR_RW(_name)
+#define DEVICE_ATTR_RO(_name) \
+        struct device_attribute dev_attr_##_name = __ATTR_RO(_name)
 #define DEVICE_ULONG_ATTR(_name, _mode, _var) \
         struct dev_ext_attribute dev_attr_##_name = \
                 { __ATTR(_name, _mode, device_show_ulong, device_store_ulong), &(_var) }