1 files changed, 105 insertions, 31 deletions

diff --git a/include/linux/device.h b/include/linux/device.h
index 182192892d45..6a8276f683b6 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;
@@ -128,6 +128,10 @@ 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 +207,9 @@ 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;
@@ -404,7 +411,7 @@ 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.
                                          */
 
@@ -433,6 +440,9 @@ 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" */
 
@@ -451,6 +461,10 @@ 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);
 }
 
@@ -510,17 +524,17 @@ static inline bool device_async_suspend_enabled(struct device *dev)
 
 static inline void device_lock(struct device *dev)
 {
-        down(&dev->sem);
+        mutex_lock(&dev->mutex);
 }
 
 static inline int device_trylock(struct device *dev)
 {
-        return down_trylock(&dev->sem);
+        return mutex_trylock(&dev->mutex);
 }
 
 static inline void device_unlock(struct device *dev)
 {
-        up(&dev->sem);
+        mutex_unlock(&dev->mutex);
 }
 
 void driver_init(void);
@@ -624,43 +638,103 @@ 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
 
 /*