1 files changed, 56 insertions, 14 deletions

diff --git a/include/linux/device.h b/include/linux/device.h
index 9200cfd75f15..2a9d6ed59579 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 *);
@@ -62,6 +66,9 @@ extern void bus_remove_file(struct bus_type *, struct bus_attribute *);
  * @bus_attrs:  Default attributes of the bus.
  * @dev_attrs:  Default attributes of the devices on the bus.
  * @drv_attrs:  Default attributes of the device drivers on the bus.
+ * @bus_groups: Default attributes of the bus.
+ * @dev_groups: Default attributes of the devices on the bus.
+ * @drv_groups: Default attributes of the device drivers on the bus.
  * @match:      Called, perhaps multiple times, whenever a new device or driver
  *              is added for this bus. It should return a nonzero value if the
  *              given device can be handled by the given driver.
@@ -99,9 +106,12 @@ struct bus_type {
         const char              *name;
         const char              *dev_name;
         struct device           *dev_root;
-        struct bus_attribute    *bus_attrs;
-        struct device_attribute *dev_attrs;
-        struct driver_attribute *drv_attrs;
+        struct bus_attribute    *bus_attrs;     /* use bus_groups instead */
+        struct device_attribute *dev_attrs;     /* use dev_groups instead */
+        struct driver_attribute *drv_attrs;     /* use drv_groups instead */
+        const struct attribute_group **bus_groups;
+        const struct attribute_group **dev_groups;
+        const struct attribute_group **drv_groups;
 
         int (*match)(struct device *dev, struct device_driver *drv);
         int (*uevent)(struct device *dev, struct kobj_uevent_env *env);
@@ -261,9 +271,14 @@ 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)
+#define DRIVER_ATTR_WO(_name) \
+        struct driver_attribute driver_attr_##_name = __ATTR_WO(_name)
 
 extern int __must_check driver_create_file(struct device_driver *driver,
                                         const struct driver_attribute *attr);
@@ -313,6 +328,7 @@ int subsys_virtual_register(struct bus_type *subsys,
  * @name:       Name of the class.
  * @owner:      The module owner.
  * @class_attrs: Default attributes of this class.
+ * @dev_groups: Default attributes of the devices that belong to the class.
  * @dev_attrs:  Default attributes of the devices belong to the class.
  * @dev_bin_attrs: Default binary attributes of the devices belong to the class.
  * @dev_kobj:   The kobject that represents this class and links it into the hierarchy.
@@ -342,7 +358,8 @@ struct class {
         struct module           *owner;
 
         struct class_attribute          *class_attrs;
-        struct device_attribute         *dev_attrs;
+        struct device_attribute         *dev_attrs;     /* use dev_groups instead */
+        const struct attribute_group    **dev_groups;
         struct bin_attribute            *dev_bin_attrs;
         struct kobject                  *dev_kobj;
 
@@ -414,8 +431,12 @@ 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 +444,6 @@ 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 +532,12 @@ 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_ATTR_WO(_name) \
+        struct device_attribute dev_attr_##_name = __ATTR_WO(_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) }
@@ -879,6 +905,7 @@ static inline bool device_supports_offline(struct device *dev)
 
 extern void lock_device_hotplug(void);
 extern void unlock_device_hotplug(void);
+extern int lock_device_hotplug_sysfs(void);
 extern int device_offline(struct device *dev);
 extern int device_online(struct device *dev);
 /*
@@ -924,6 +951,11 @@ extern __printf(5, 6)
 struct device *device_create(struct class *cls, struct device *parent,
                              dev_t devt, void *drvdata,
                              const char *fmt, ...);
+extern __printf(6, 7)
+struct device *device_create_with_groups(struct class *cls,
+                             struct device *parent, dev_t devt, void *drvdata,
+                             const struct attribute_group **groups,
+                             const char *fmt, ...);
 extern void device_destroy(struct class *cls, dev_t devt);
 
 /*
@@ -1078,7 +1110,8 @@ do {									\
         dev_level_ratelimited(dev_notice, dev, fmt, ##__VA_ARGS__)
 #define dev_info_ratelimited(dev, fmt, ...)                             \
         dev_level_ratelimited(dev_info, dev, fmt, ##__VA_ARGS__)
-#if defined(CONFIG_DYNAMIC_DEBUG) || defined(DEBUG)
+#if defined(CONFIG_DYNAMIC_DEBUG)
+/* descriptor check is first to prevent flooding with "callbacks suppressed" */
 #define dev_dbg_ratelimited(dev, fmt, ...)                              \
 do {                                                                    \
         static DEFINE_RATELIMIT_STATE(_rs,                              \
@@ -1087,8 +1120,17 @@ do {									\
         DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt);                 \
         if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT) &&        \
             __ratelimit(&_rs))                                          \
-                __dynamic_pr_debug(&descriptor, pr_fmt(fmt),            \
-                                   ##__VA_ARGS__);                      \
+                __dynamic_dev_dbg(&descriptor, dev, fmt,                \
+                                  ##__VA_ARGS__);                       \
+} while (0)
+#elif defined(DEBUG)
+#define dev_dbg_ratelimited(dev, fmt, ...)                              \
+do {                                                                    \
+        static DEFINE_RATELIMIT_STATE(_rs,                              \
+                                      DEFAULT_RATELIMIT_INTERVAL,       \
+                                      DEFAULT_RATELIMIT_BURST);         \
+        if (__ratelimit(&_rs))                                          \
+                dev_printk(KERN_DEBUG, dev, fmt, ##__VA_ARGS__);        \
 } while (0)
 #else
 #define dev_dbg_ratelimited(dev, fmt, ...)                      \