6 files changed, 134 insertions, 17 deletions

diff --git a/include/linux/device.h b/include/linux/device.h
index b30527db3ac0..182192892d45 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -106,7 +106,7 @@ extern int bus_unregister_notifier(struct bus_type *bus,
 
 /* All 4 notifers below get called with the target struct device *
  * as an argument. Note that those functions are likely to be called
- * with the device semaphore held in the core, so be careful.
+ * with the device lock held in the core, so be careful.
  */
 #define BUS_NOTIFY_ADD_DEVICE           0x00000001 /* device added */
 #define BUS_NOTIFY_DEL_DEVICE           0x00000002 /* device removed */
@@ -251,8 +251,10 @@ extern struct device *class_find_device(struct class *class,
 
 struct class_attribute {
         struct attribute attr;
-        ssize_t (*show)(struct class *class, char *buf);
-        ssize_t (*store)(struct class *class, const char *buf, size_t count);
+        ssize_t (*show)(struct class *class, struct class_attribute *attr,
+                        char *buf);
+        ssize_t (*store)(struct class *class, struct class_attribute *attr,
+                        const char *buf, size_t count);
 };
 
 #define CLASS_ATTR(_name, _mode, _show, _store)                 \
@@ -263,6 +265,23 @@ extern int __must_check class_create_file(struct class *class,
 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;
+};
+
+/* Currently read-only only */
+#define _CLASS_ATTR_STRING(_name, _mode, _str) \
+        { __ATTR(_name, _mode, show_class_attr_string, NULL), _str }
+#define CLASS_ATTR_STRING(_name, _mode, _str) \
+        struct class_attribute_string class_attr_##_name = \
+                _CLASS_ATTR_STRING(_name, _mode, _str)
+
+extern ssize_t show_class_attr_string(struct class *class, struct class_attribute *attr,
+                        char *buf);
+
 struct class_interface {
         struct list_head        node;
         struct class            *class;
@@ -489,6 +508,21 @@ static inline bool device_async_suspend_enabled(struct device *dev)
         return !!dev->power.async_suspend;
 }
 
+static inline void device_lock(struct device *dev)
+{
+        down(&dev->sem);
+}
+
+static inline int device_trylock(struct device *dev)
+{
+        return down_trylock(&dev->sem);
+}
+
+static inline void device_unlock(struct device *dev)
+{
+        up(&dev->sem);
+}
+
 void driver_init(void);
 
 /*
diff --git a/include/linux/kobject.h b/include/linux/kobject.h
index 58ae8e00fcdd..3950d3c2850d 100644
--- a/include/linux/kobject.h
+++ b/include/linux/kobject.h
@@ -106,7 +106,7 @@ extern char *kobject_get_path(struct kobject *kobj, gfp_t flag);
 
 struct kobj_type {
         void (*release)(struct kobject *kobj);
-        struct sysfs_ops *sysfs_ops;
+        const struct sysfs_ops *sysfs_ops;
         struct attribute **default_attrs;
 };
 
@@ -118,9 +118,9 @@ struct kobj_uevent_env {
 };
 
 struct kset_uevent_ops {
-        int (*filter)(struct kset *kset, struct kobject *kobj);
-        const char *(*name)(struct kset *kset, struct kobject *kobj);
-        int (*uevent)(struct kset *kset, struct kobject *kobj,
+        int (* const filter)(struct kset *kset, struct kobject *kobj);
+        const char *(* const name)(struct kset *kset, struct kobject *kobj);
+        int (* const uevent)(struct kset *kset, struct kobject *kobj,
                       struct kobj_uevent_env *env);
 };
 
@@ -132,7 +132,7 @@ struct kobj_attribute {
                          const char *buf, size_t count);
 };
 
-extern struct sysfs_ops kobj_sysfs_ops;
+extern const struct sysfs_ops kobj_sysfs_ops;
 
 /**
  * struct kset - a set of kobjects of a specific type, belonging to a specific subsystem.
@@ -155,14 +155,14 @@ struct kset {
         struct list_head list;
         spinlock_t list_lock;
         struct kobject kobj;
-        struct kset_uevent_ops *uevent_ops;
+        const struct kset_uevent_ops *uevent_ops;
 };
 
 extern void kset_init(struct kset *kset);
 extern int __must_check kset_register(struct kset *kset);
 extern void kset_unregister(struct kset *kset);
 extern struct kset * __must_check kset_create_and_add(const char *name,
-                                                struct kset_uevent_ops *u,
+                                                const struct kset_uevent_ops *u,
                                                 struct kobject *parent_kobj);
 
 static inline struct kset *to_kset(struct kobject *kobj)
diff --git a/include/linux/platform_device.h b/include/linux/platform_device.h
index 71ff887ca44e..212da17d06af 100644
--- a/include/linux/platform_device.h
+++ b/include/linux/platform_device.h
@@ -21,7 +21,7 @@ struct platform_device {
         u32             num_resources;
         struct resource * resource;
 
-        struct platform_device_id       *id_entry;
+        const struct platform_device_id *id_entry;
 
         /* arch specific additions */
         struct pdev_archdata    archdata;
@@ -62,7 +62,7 @@ struct platform_driver {
         int (*suspend)(struct platform_device *, pm_message_t state);
         int (*resume)(struct platform_device *);
         struct device_driver driver;
-        struct platform_device_id *id_table;
+        const struct platform_device_id *id_table;
 };
 
 extern int platform_driver_register(struct platform_driver *);
@@ -77,6 +77,11 @@ extern int platform_driver_probe(struct platform_driver *driver,
 #define platform_get_drvdata(_dev)      dev_get_drvdata(&(_dev)->dev)
 #define platform_set_drvdata(_dev,data) dev_set_drvdata(&(_dev)->dev, (data))
 
+extern struct platform_device *platform_create_bundle(struct platform_driver *driver,
+                                        int (*probe)(struct platform_device *),
+                                        struct resource *res, unsigned int n_res,
+                                        const void *data, size_t size);
+
 /* early platform driver interface */
 struct early_platform_driver {
         const char *class_str;
diff --git a/include/linux/sysdev.h b/include/linux/sysdev.h
index f395bb3fa2f2..1154c29f4101 100644
--- a/include/linux/sysdev.h
+++ b/include/linux/sysdev.h
@@ -27,10 +27,12 @@
 
 
 struct sys_device;
+struct sysdev_class_attribute;
 
 struct sysdev_class {
         const char *name;
         struct list_head        drivers;
+        struct sysdev_class_attribute **attrs;
 
         /* Default operations for these types of devices */
         int     (*shutdown)(struct sys_device *);
@@ -41,8 +43,10 @@ struct sysdev_class {
 
 struct sysdev_class_attribute {
         struct attribute attr;
-        ssize_t (*show)(struct sysdev_class *, char *);
-        ssize_t (*store)(struct sysdev_class *, const char *, size_t);
+        ssize_t (*show)(struct sysdev_class *, struct sysdev_class_attribute *,
+                        char *);
+        ssize_t (*store)(struct sysdev_class *, struct sysdev_class_attribute *,
+                         const char *, size_t);
 };
 
 #define _SYSDEV_CLASS_ATTR(_name,_mode,_show,_store)            \
@@ -119,6 +123,19 @@ struct sysdev_attribute {
 extern int sysdev_create_file(struct sys_device *, struct sysdev_attribute *);
 extern void sysdev_remove_file(struct sys_device *, struct sysdev_attribute *);
 
+/* Create/remove NULL terminated attribute list */
+static inline int
+sysdev_create_files(struct sys_device *d, struct sysdev_attribute **a)
+{
+        return sysfs_create_files(&d->kobj, (const struct attribute **)a);
+}
+
+static inline void
+sysdev_remove_files(struct sys_device *d, struct sysdev_attribute **a)
+{
+        return sysfs_remove_files(&d->kobj, (const struct attribute **)a);
+}
+
 struct sysdev_ext_attribute {
         struct sysdev_attribute attr;
         void *var;
diff --git a/include/linux/sysfs.h b/include/linux/sysfs.h
index cfa83083a2d4..f0496b3d1811 100644
--- a/include/linux/sysfs.h
+++ b/include/linux/sysfs.h
@@ -15,6 +15,7 @@
 #include <linux/compiler.h>
 #include <linux/errno.h>
 #include <linux/list.h>
+#include <linux/lockdep.h>
 #include <asm/atomic.h>
 
 struct kobject;
@@ -29,8 +30,33 @@ struct attribute {
         const char              *name;
         struct module           *owner;
         mode_t                  mode;
+#ifdef CONFIG_DEBUG_LOCK_ALLOC
+        struct lock_class_key   *key;
+        struct lock_class_key   skey;
+#endif
 };
 
+/**
+ *      sysfs_attr_init - initialize a dynamically allocated sysfs attribute
+ *      @attr: struct attribute to initialize
+ *
+ *      Initialize a dynamically allocated struct attribute so we can
+ *      make lockdep happy.  This is a new requirement for attributes
+ *      and initially this is only needed when lockdep is enabled.
+ *      Lockdep gives a nice error when your attribute is added to
+ *      sysfs if you don't have this.
+ */
+#ifdef CONFIG_DEBUG_LOCK_ALLOC
+#define sysfs_attr_init(attr)                           \
+do {                                                    \
+        static struct lock_class_key __key;             \
+                                                        \
+        (attr)->key = &__key;                           \
+} while(0)
+#else
+#define sysfs_attr_init(attr) do {} while(0)
+#endif
+
 struct attribute_group {
         const char              *name;
         mode_t                  (*is_visible)(struct kobject *,
@@ -74,6 +100,18 @@ struct bin_attribute {
                     struct vm_area_struct *vma);
 };
 
+/**
+ *      sysfs_bin_attr_init - initialize a dynamically allocated bin_attribute
+ *      @attr: struct bin_attribute to initialize
+ *
+ *      Initialize a dynamically allocated struct bin_attribute so we
+ *      can make lockdep happy.  This is a new requirement for
+ *      attributes and initially this is only needed when lockdep is
+ *      enabled.  Lockdep gives a nice error when your attribute is
+ *      added to sysfs if you don't have this.
+ */
+#define sysfs_bin_attr_init(bin_attr) sysfs_attr_init(&(bin_attr)->attr)
+
 struct sysfs_ops {
         ssize_t (*show)(struct kobject *, struct attribute *,char *);
         ssize_t (*store)(struct kobject *,struct attribute *,const char *, size_t);
@@ -94,9 +132,12 @@ int __must_check sysfs_move_dir(struct kobject *kobj,
 
 int __must_check sysfs_create_file(struct kobject *kobj,
                                    const struct attribute *attr);
+int __must_check sysfs_create_files(struct kobject *kobj,
+                                   const struct attribute **attr);
 int __must_check sysfs_chmod_file(struct kobject *kobj, struct attribute *attr,
                                   mode_t mode);
 void sysfs_remove_file(struct kobject *kobj, const struct attribute *attr);
+void sysfs_remove_files(struct kobject *kobj, const struct attribute **attr);
 
 int __must_check sysfs_create_bin_file(struct kobject *kobj,
                                        const struct bin_attribute *attr);
@@ -110,6 +151,9 @@ int __must_check sysfs_create_link_nowarn(struct kobject *kobj,
                                           const char *name);
 void sysfs_remove_link(struct kobject *kobj, const char *name);
 
+int sysfs_rename_link(struct kobject *kobj, struct kobject *target,
+                        const char *old_name, const char *new_name);
+
 int __must_check sysfs_create_group(struct kobject *kobj,
                                     const struct attribute_group *grp);
 int sysfs_update_group(struct kobject *kobj,
@@ -164,6 +208,12 @@ static inline int sysfs_create_file(struct kobject *kobj,
         return 0;
 }
 
+static inline int sysfs_create_files(struct kobject *kobj,
+                                    const struct attribute **attr)
+{
+        return 0;
+}
+
 static inline int sysfs_chmod_file(struct kobject *kobj,
                                    struct attribute *attr, mode_t mode)
 {
@@ -175,6 +225,11 @@ static inline void sysfs_remove_file(struct kobject *kobj,
 {
 }
 
+static inline void sysfs_remove_files(struct kobject *kobj,
+                                     const struct attribute **attr)
+{
+}
+
 static inline int sysfs_create_bin_file(struct kobject *kobj,
                                         const struct bin_attribute *attr)
 {
@@ -203,6 +258,12 @@ static inline void sysfs_remove_link(struct kobject *kobj, const char *name)
 {
 }
 
+static inline int sysfs_rename_link(struct kobject *k, struct kobject *t,
+                                    const char *old_name, const char *new_name)
+{
+        return 0;
+}
+
 static inline int sysfs_create_group(struct kobject *kobj,
                                      const struct attribute_group *grp)
 {
diff --git a/include/linux/usb.h b/include/linux/usb.h
index 3492abf82e75..8c9f053111bb 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -512,9 +512,9 @@ extern struct usb_device *usb_get_dev(struct usb_device *dev);
 extern void usb_put_dev(struct usb_device *dev);
 
 /* USB device locking */
-#define usb_lock_device(udev)           down(&(udev)->dev.sem)
-#define usb_unlock_device(udev)         up(&(udev)->dev.sem)
-#define usb_trylock_device(udev)        down_trylock(&(udev)->dev.sem)
+#define usb_lock_device(udev)           device_lock(&(udev)->dev)
+#define usb_unlock_device(udev)         device_unlock(&(udev)->dev)
+#define usb_trylock_device(udev)        device_trylock(&(udev)->dev)
 extern int usb_lock_device_for_reset(struct usb_device *udev,
                                      const struct usb_interface *iface);