1 files changed, 29 insertions, 3 deletions

diff --git a/include/linux/device.h b/include/linux/device.h
index 4d8372d135df..987f5912720a 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -90,6 +90,9 @@ int __must_check bus_for_each_drv(struct bus_type *bus,
                                   struct device_driver *start, void *data,
                                   int (*fn)(struct device_driver *, void *));
 
+void bus_sort_breadthfirst(struct bus_type *bus,
+                           int (*compare)(const struct device *a,
+                                          const struct device *b));
 /*
  * Bus notifiers: Get notified of addition/removal of devices
  * and binding/unbinding of drivers to devices.
@@ -199,6 +202,11 @@ struct class {
         struct class_private *p;
 };
 
+struct class_dev_iter {
+        struct klist_iter               ki;
+        const struct device_type        *type;
+};
+
 extern struct kobject *sysfs_dev_block_kobj;
 extern struct kobject *sysfs_dev_char_kobj;
 extern int __must_check __class_register(struct class *class,
@@ -213,6 +221,13 @@ extern void class_unregister(struct class *class);
         __class_register(class, &__key);        \
 })
 
+extern void class_dev_iter_init(struct class_dev_iter *iter,
+                                struct class *class,
+                                struct device *start,
+                                const struct device_type *type);
+extern struct device *class_dev_iter_next(struct class_dev_iter *iter);
+extern void class_dev_iter_exit(struct class_dev_iter *iter);
+
 extern int class_for_each_device(struct class *class, struct device *start,
                                  void *data,
                                  int (*fn)(struct device *dev, void *data));
@@ -396,7 +411,7 @@ struct device {
         spinlock_t              devres_lock;
         struct list_head        devres_head;
 
-        struct list_head        node;
+        struct klist_node       knode_class;
         struct class            *class;
         dev_t                   devt;   /* dev_t, creates the sysfs "dev" */
         struct attribute_group  **groups;       /* optional groups */
@@ -490,7 +505,6 @@ extern struct device *device_create(struct class *cls, struct device *parent,
                                     dev_t devt, void *drvdata,
                                     const char *fmt, ...)
                                     __attribute__((format(printf, 5, 6)));
-#define device_create_drvdata   device_create
 extern void device_destroy(struct class *cls, dev_t devt);
 
 /*
@@ -539,7 +553,11 @@ extern const char *dev_driver_string(const struct device *dev);
 #define dev_info(dev, format, arg...)           \
         dev_printk(KERN_INFO , dev , format , ## arg)
 
-#ifdef DEBUG
+#if defined(CONFIG_DYNAMIC_PRINTK_DEBUG)
+#define dev_dbg(dev, format, ...) do { \
+        dynamic_dev_dbg(dev, format, ##__VA_ARGS__); \
+        } while (0)
+#elif defined(DEBUG)
 #define dev_dbg(dev, format, arg...)            \
         dev_printk(KERN_DEBUG , dev , format , ## arg)
 #else
@@ -555,6 +573,14 @@ extern const char *dev_driver_string(const struct device *dev);
         ({ if (0) dev_printk(KERN_DEBUG, dev, format, ##arg); 0; })
 #endif
 
+/*
+ * dev_WARN() acts like dev_printk(), but with the key difference
+ * of using a WARN/WARN_ON to get the message out, including the
+ * file/line information and a backtrace.
+ */
+#define dev_WARN(dev, format, arg...) \
+        WARN(1, "Device: %s\n" format, dev_driver_string(dev), ## arg);
+
 /* Create alias, so I can be autoloaded. */
 #define MODULE_ALIAS_CHARDEV(major,minor) \
         MODULE_ALIAS("char-major-" __stringify(major) "-" __stringify(minor))