Merge commit 'v2.6.28-rc2' into x86/pci-ioapic-boot-irq-quirks

1 files changed, 68 insertions, 27 deletions

diff --git a/include/linux/device.h b/include/linux/device.h
index f71a78d123ae..1a3686d15f98 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -16,6 +16,7 @@
 #include <linux/kobject.h>
 #include <linux/klist.h>
 #include <linux/list.h>
+#include <linux/lockdep.h>
 #include <linux/compiler.h>
 #include <linux/types.h>
 #include <linux/module.h>
@@ -24,17 +25,13 @@
 #include <asm/atomic.h>
 #include <asm/device.h>
 
-#define DEVICE_NAME_SIZE        50
-/* DEVICE_NAME_HALF is really less than half to accommodate slop */
-#define DEVICE_NAME_HALF        __stringify(20)
-#define DEVICE_ID_SIZE          32
-#define BUS_ID_SIZE             KOBJ_NAME_LEN
-
+#define BUS_ID_SIZE             20
 
 struct device;
 struct device_driver;
 struct driver_private;
 struct class;
+struct class_private;
 struct bus_type;
 struct bus_type_private;
 
@@ -93,6 +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.
@@ -186,13 +186,9 @@ struct class {
         const char              *name;
         struct module           *owner;
 
-        struct kset             subsys;
-        struct list_head        devices;
-        struct list_head        interfaces;
-        struct kset             class_dirs;
-        struct semaphore        sem; /* locks children, devices, interfaces */
         struct class_attribute          *class_attrs;
         struct device_attribute         *dev_attrs;
+        struct kobject                  *dev_kobj;
 
         int (*dev_uevent)(struct device *dev, struct kobj_uevent_env *env);
 
@@ -203,13 +199,40 @@ struct class {
         int (*resume)(struct device *dev);
 
         struct pm_ops *pm;
+        struct class_private *p;
+};
+
+struct class_dev_iter {
+        struct klist_iter               ki;
+        const struct device_type        *type;
 };
 
-extern int __must_check class_register(struct class *class);
+extern struct kobject *sysfs_dev_block_kobj;
+extern struct kobject *sysfs_dev_char_kobj;
+extern int __must_check __class_register(struct class *class,
+                                         struct lock_class_key *key);
 extern void class_unregister(struct class *class);
-extern int class_for_each_device(struct class *class, void *data,
+
+/* This is a #define to keep the compiler from merging different
+ * instances of the __key variable */
+#define class_register(class)                   \
+({                                              \
+        static struct lock_class_key __key;     \
+        __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));
-extern struct device *class_find_device(struct class *class, void *data,
+extern struct device *class_find_device(struct class *class,
+                                        struct device *start, void *data,
                                         int (*match)(struct device *, void *));
 
 struct class_attribute {
@@ -237,9 +260,19 @@ struct class_interface {
 extern int __must_check class_interface_register(struct class_interface *);
 extern void class_interface_unregister(struct class_interface *);
 
-extern struct class *class_create(struct module *owner, const char *name);
+extern struct class * __must_check __class_create(struct module *owner,
+                                                  const char *name,
+                                                  struct lock_class_key *key);
 extern void class_destroy(struct class *cls);
 
+/* This is a #define to keep the compiler from merging different
+ * instances of the __key variable */
+#define class_create(owner, name)               \
+({                                              \
+        static struct lock_class_key __key;     \
+        __class_create(owner, name, &__key);    \
+})
+
 /*
  * The type of device, "struct device" is embedded in. A class
  * or bus can contain devices of different types
@@ -340,6 +373,7 @@ struct device {
 
         struct kobject kobj;
         char    bus_id[BUS_ID_SIZE];    /* position on parent bus */
+        const char              *init_name; /* initial name of the device */
         struct device_type      *type;
         unsigned                uevent_suppress:1;
 
@@ -377,7 +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 */
@@ -388,7 +422,7 @@ struct device {
 /* Get the wakeup routines, which depend on struct device */
 #include <linux/pm_wakeup.h>
 
-static inline const char *dev_name(struct device *dev)
+static inline const char *dev_name(const struct device *dev)
 {
         /* will be changed into kobject_name(&dev->kobj) in the near future */
         return dev->bus_id;
@@ -416,7 +450,7 @@ static inline void set_dev_node(struct device *dev, int node)
 }
 #endif
 
-static inline void *dev_get_drvdata(struct device *dev)
+static inline void *dev_get_drvdata(const struct device *dev)
 {
         return dev->driver_data;
 }
@@ -468,13 +502,8 @@ extern struct device *device_create_vargs(struct class *cls,
                                           const char *fmt,
                                           va_list vargs);
 extern struct device *device_create(struct class *cls, struct device *parent,
-                                    dev_t devt, const char *fmt, ...)
-                                    __attribute__((format(printf, 4, 5)));
-extern struct device *device_create_drvdata(struct class *cls,
-                                            struct device *parent,
-                                            dev_t devt,
-                                            void *drvdata,
-                                            const char *fmt, ...)
+                                    dev_t devt, void *drvdata,
+                                    const char *fmt, ...)
                                     __attribute__((format(printf, 5, 6)));
 extern void device_destroy(struct class *cls, dev_t devt);
 
@@ -504,7 +533,7 @@ extern void device_shutdown(void);
 extern void sysdev_shutdown(void);
 
 /* debugging and troubleshooting/diagnostic helpers. */
-extern const char *dev_driver_string(struct device *dev);
+extern const char *dev_driver_string(const struct device *dev);
 #define dev_printk(level, dev, format, arg...)  \
         printk(level "%s %s: " format , dev_driver_string(dev) , \
                dev_name(dev) , ## arg)
@@ -524,7 +553,11 @@ extern const char *dev_driver_string(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
@@ -540,6 +573,14 @@ extern const char *dev_driver_string(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))