Merge commit 'v2.6.36' into kbuild/misc

Update to be able to fix a recent change to scripts/basic/docproc.c
(commit eda603f).

1 files changed, 164 insertions, 38 deletions

diff --git a/include/linux/device.h b/include/linux/device.h
index a62799f2ab00..516fecacf27b 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -22,7 +22,6 @@
 #include <linux/types.h>
 #include <linux/module.h>
 #include <linux/pm.h>
-#include <linux/semaphore.h>
 #include <asm/atomic.h>
 #include <asm/device.h>
 
@@ -34,6 +33,7 @@ struct class;
 struct class_private;
 struct bus_type;
 struct bus_type_private;
+struct device_node;
 
 struct bus_attribute {
         struct attribute        attr;
@@ -84,9 +84,8 @@ struct device *bus_find_device_by_name(struct bus_type *bus,
                                        struct device *start,
                                        const char *name);
 
-int __must_check bus_for_each_drv(struct bus_type *bus,
-                                  struct device_driver *start, void *data,
-                                  int (*fn)(struct device_driver *, void *));
+int 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,
@@ -106,14 +105,16 @@ 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 */
-#define BUS_NOTIFY_BOUND_DRIVER         0x00000003 /* driver bound to device */
-#define BUS_NOTIFY_UNBIND_DRIVER        0x00000004 /* driver about to be
+#define BUS_NOTIFY_BIND_DRIVER          0x00000003 /* driver about to be
+                                                      bound */
+#define BUS_NOTIFY_BOUND_DRIVER         0x00000004 /* driver bound to device */
+#define BUS_NOTIFY_UNBIND_DRIVER        0x00000005 /* driver about to be
                                                       unbound */
-#define BUS_NOTIFY_UNBOUND_DRIVER       0x00000005 /* driver is unbound
+#define BUS_NOTIFY_UNBOUND_DRIVER       0x00000006 /* driver is unbound
                                                       from the device */
 
 extern struct kset *bus_get_kset(struct bus_type *bus);
@@ -128,6 +129,10 @@ struct device_driver {
 
         bool suppress_bind_attrs;       /* disables bind/unbind via sysfs */
 
+#if defined(CONFIG_OF)
+        const struct of_device_id       *of_match_table;
+#endif
+
         int (*probe) (struct device *dev);
         int (*remove) (struct device *dev);
         void (*shutdown) (struct device *dev);
@@ -203,6 +208,9 @@ struct class {
         int (*suspend)(struct device *dev, pm_message_t state);
         int (*resume)(struct device *dev);
 
+        const struct kobj_ns_type_operations *ns_type;
+        const void *(*namespace)(struct device *dev);
+
         const struct dev_pm_ops *pm;
 
         struct class_private *p;
@@ -251,8 +259,10 @@ 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 +273,23 @@ 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;
@@ -385,7 +412,7 @@ struct device {
         const char              *init_name; /* initial name of the device */
         struct device_type      *type;
 
-        struct semaphore        sem;    /* semaphore to synchronize calls to
+        struct mutex            mutex;  /* mutex to synchronize calls to
                                          * its driver.
                                          */
 
@@ -414,6 +441,9 @@ struct device {
                                              override */
         /* arch specific additions */
         struct dev_archdata     archdata;
+#ifdef CONFIG_OF
+        struct device_node      *of_node;
+#endif
 
         dev_t                   devt;   /* dev_t, creates the sysfs "dev" */
 
@@ -432,6 +462,10 @@ struct device {
 
 static inline const char *dev_name(const struct device *dev)
 {
+        /* Use the init name until the kobject becomes available */
+        if (dev->init_name)
+                return dev->init_name;
+
         return kobject_name(&dev->kobj);
 }
 
@@ -472,6 +506,38 @@ static inline int device_is_registered(struct device *dev)
         return dev->kobj.state_in_sysfs;
 }
 
+static inline void device_enable_async_suspend(struct device *dev)
+{
+        if (dev->power.status == DPM_ON)
+                dev->power.async_suspend = true;
+}
+
+static inline void device_disable_async_suspend(struct device *dev)
+{
+        if (dev->power.status == DPM_ON)
+                dev->power.async_suspend = false;
+}
+
+static inline bool device_async_suspend_enabled(struct device *dev)
+{
+        return !!dev->power.async_suspend;
+}
+
+static inline void device_lock(struct device *dev)
+{
+        mutex_lock(&dev->mutex);
+}
+
+static inline int device_trylock(struct device *dev)
+{
+        return mutex_trylock(&dev->mutex);
+}
+
+static inline void device_unlock(struct device *dev)
+{
+        mutex_unlock(&dev->mutex);
+}
+
 void driver_init(void);
 
 /*
@@ -486,7 +552,7 @@ extern int device_for_each_child(struct device *dev, void *data,
                      int (*fn)(struct device *dev, void *data));
 extern struct device *device_find_child(struct device *dev, void *data,
                                 int (*match)(struct device *dev, void *data));
-extern int device_rename(struct device *dev, char *new_name);
+extern int device_rename(struct device *dev, const char *new_name);
 extern int device_move(struct device *dev, struct device *new_parent,
                        enum dpm_order dpm_order);
 extern const char *device_get_devnode(struct device *dev,
@@ -573,43 +639,103 @@ extern void sysdev_shutdown(void);
 
 /* debugging and troubleshooting/diagnostic helpers. */
 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)
-
-#define dev_emerg(dev, format, arg...)          \
-        dev_printk(KERN_EMERG , dev , format , ## arg)
-#define dev_alert(dev, format, arg...)          \
-        dev_printk(KERN_ALERT , dev , format , ## arg)
-#define dev_crit(dev, format, arg...)           \
-        dev_printk(KERN_CRIT , dev , format , ## arg)
-#define dev_err(dev, format, arg...)            \
-        dev_printk(KERN_ERR , dev , format , ## arg)
-#define dev_warn(dev, format, arg...)           \
-        dev_printk(KERN_WARNING , dev , format , ## arg)
-#define dev_notice(dev, format, arg...)         \
-        dev_printk(KERN_NOTICE , dev , format , ## arg)
-#define dev_info(dev, format, arg...)           \
-        dev_printk(KERN_INFO , dev , format , ## arg)
+
+
+#ifdef CONFIG_PRINTK
+
+extern int dev_printk(const char *level, const struct device *dev,
+                      const char *fmt, ...)
+        __attribute__ ((format (printf, 3, 4)));
+extern int dev_emerg(const struct device *dev, const char *fmt, ...)
+        __attribute__ ((format (printf, 2, 3)));
+extern int dev_alert(const struct device *dev, const char *fmt, ...)
+        __attribute__ ((format (printf, 2, 3)));
+extern int dev_crit(const struct device *dev, const char *fmt, ...)
+        __attribute__ ((format (printf, 2, 3)));
+extern int dev_err(const struct device *dev, const char *fmt, ...)
+        __attribute__ ((format (printf, 2, 3)));
+extern int dev_warn(const struct device *dev, const char *fmt, ...)
+        __attribute__ ((format (printf, 2, 3)));
+extern int dev_notice(const struct device *dev, const char *fmt, ...)
+        __attribute__ ((format (printf, 2, 3)));
+extern int _dev_info(const struct device *dev, const char *fmt, ...)
+        __attribute__ ((format (printf, 2, 3)));
+
+#else
+
+static inline int dev_printk(const char *level, const struct device *dev,
+                      const char *fmt, ...)
+        __attribute__ ((format (printf, 3, 4)));
+static inline int dev_printk(const char *level, const struct device *dev,
+                      const char *fmt, ...)
+         { return 0; }
+
+static inline int dev_emerg(const struct device *dev, const char *fmt, ...)
+        __attribute__ ((format (printf, 2, 3)));
+static inline int dev_emerg(const struct device *dev, const char *fmt, ...)
+        { return 0; }
+static inline int dev_crit(const struct device *dev, const char *fmt, ...)
+        __attribute__ ((format (printf, 2, 3)));
+static inline int dev_crit(const struct device *dev, const char *fmt, ...)
+        { return 0; }
+static inline int dev_alert(const struct device *dev, const char *fmt, ...)
+        __attribute__ ((format (printf, 2, 3)));
+static inline int dev_alert(const struct device *dev, const char *fmt, ...)
+        { return 0; }
+static inline int dev_err(const struct device *dev, const char *fmt, ...)
+        __attribute__ ((format (printf, 2, 3)));
+static inline int dev_err(const struct device *dev, const char *fmt, ...)
+        { return 0; }
+static inline int dev_warn(const struct device *dev, const char *fmt, ...)
+        __attribute__ ((format (printf, 2, 3)));
+static inline int dev_warn(const struct device *dev, const char *fmt, ...)
+        { return 0; }
+static inline int dev_notice(const struct device *dev, const char *fmt, ...)
+        __attribute__ ((format (printf, 2, 3)));
+static inline int dev_notice(const struct device *dev, const char *fmt, ...)
+        { return 0; }
+static inline int _dev_info(const struct device *dev, const char *fmt, ...)
+        __attribute__ ((format (printf, 2, 3)));
+static inline int _dev_info(const struct device *dev, const char *fmt, ...)
+        { return 0; }
+
+#endif
+
+/*
+ * Stupid hackaround for existing uses of non-printk uses dev_info
+ *
+ * Note that the definition of dev_info below is actually _dev_info
+ * and a macro is used to avoid redefining dev_info
+ */
+
+#define dev_info(dev, fmt, arg...) _dev_info(dev, fmt, ##arg)
 
 #if defined(DEBUG)
 #define dev_dbg(dev, format, arg...)            \
-        dev_printk(KERN_DEBUG , dev , format , ## arg)
+        dev_printk(KERN_DEBUG, dev, format, ##arg)
 #elif defined(CONFIG_DYNAMIC_DEBUG)
-#define dev_dbg(dev, format, ...) do { \
+#define dev_dbg(dev, format, ...)                    \
+do {                                                 \
         dynamic_dev_dbg(dev, format, ##__VA_ARGS__); \
-        } while (0)
+} while (0)
 #else
-#define dev_dbg(dev, format, arg...)            \
-        ({ if (0) dev_printk(KERN_DEBUG, dev, format, ##arg); 0; })
+#define dev_dbg(dev, format, arg...)                            \
+({                                                              \
+        if (0)                                                  \
+                dev_printk(KERN_DEBUG, dev, format, ##arg);     \
+        0;                                                      \
+})
 #endif
 
 #ifdef VERBOSE_DEBUG
 #define dev_vdbg        dev_dbg
 #else
-
-#define dev_vdbg(dev, format, arg...)           \
-        ({ if (0) dev_printk(KERN_DEBUG, dev, format, ##arg); 0; })
+#define dev_vdbg(dev, format, arg...)                           \
+({                                                              \
+        if (0)                                                  \
+                dev_printk(KERN_DEBUG, dev, format, ##arg);     \
+        0;                                                      \
+})
 #endif
 
 /*