Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6: (46 commits)
  UIO: Fix mapping of logical and virtual memory
  UIO: add automata sercos3 pci card support
  UIO: Change driver name of uio_pdrv
  UIO: Add alignment warnings for uio-mem
  Driver core: add bus_sort_breadthfirst() function
  NET: convert the phy_device file to use bus_find_device_by_name
  kobject: Cleanup kobject_rename and !CONFIG_SYSFS
  kobject: Fix kobject_rename and !CONFIG_SYSFS
  sysfs: Make dir and name args to sysfs_notify() const
  platform: add new device registration helper
  sysfs: use ilookup5() instead of ilookup5_nowait()
  PNP: create device attributes via default device attributes
  Driver core: make bus_find_device_by_name() more robust
  usb: turn dev_warn+WARN_ON combos into dev_WARN
  debug: use dev_WARN() rather than WARN_ON() in device_pm_add()
  debug: Introduce a dev_WARN() function
  sysfs: fix deadlock
  device model: Do a quickcheck for driver binding before doing an expensive check
  Driver core: Fix cleanup in device_create_vargs().
  Driver core: Clarify device cleanup.
  ...

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.
@@ -502,7 +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);
 
 /*
@@ -551,7 +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
@@ -567,6 +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))

include/linux/dynamic_printk.h

@@ -0,0 +1,93 @@
+#ifndef _DYNAMIC_PRINTK_H
+#define _DYNAMIC_PRINTK_H
+
+#define DYNAMIC_DEBUG_HASH_BITS 6
+#define DEBUG_HASH_TABLE_SIZE (1 << DYNAMIC_DEBUG_HASH_BITS)
+
+#define TYPE_BOOLEAN 1
+
+#define DYNAMIC_ENABLED_ALL 0
+#define DYNAMIC_ENABLED_NONE 1
+#define DYNAMIC_ENABLED_SOME 2
+
+extern int dynamic_enabled;
+
+/* dynamic_printk_enabled, and dynamic_printk_enabled2 are bitmasks in which
+ * bit n is set to 1 if any modname hashes into the bucket n, 0 otherwise. They
+ * use independent hash functions, to reduce the chance of false positives.
+ */
+extern long long dynamic_printk_enabled;
+extern long long dynamic_printk_enabled2;
+
+struct mod_debug {
+	char *modname;
+	char *logical_modname;
+	char *flag_names;
+	int type;
+	int hash;
+	int hash2;
+} __attribute__((aligned(8)));
+
+int register_dynamic_debug_module(char *mod_name, int type, char *share_name,
+					char *flags, int hash, int hash2);
+
+#if defined(CONFIG_DYNAMIC_PRINTK_DEBUG)
+extern int unregister_dynamic_debug_module(char *mod_name);
+extern int __dynamic_dbg_enabled_helper(char *modname, int type,
+					int value, int hash);
+
+#define __dynamic_dbg_enabled(module, type, value, level, hash)  ({	     \
+	int __ret = 0;							     \
+	if (unlikely((dynamic_printk_enabled & (1LL << DEBUG_HASH)) &&	     \
+			(dynamic_printk_enabled2 & (1LL << DEBUG_HASH2))))   \
+			__ret = __dynamic_dbg_enabled_helper(module, type,   \
+								value, hash);\
+	__ret; })
+
+#define dynamic_pr_debug(fmt, ...) do {					    \
+	static char mod_name[]						    \
+	__attribute__((section("__verbose_strings")))			    \
+	 = KBUILD_MODNAME;						    \
+	static struct mod_debug descriptor				    \
+	__used								    \
+	__attribute__((section("__verbose"), aligned(8))) =		    \
+	{ mod_name, mod_name, NULL, TYPE_BOOLEAN, DEBUG_HASH, DEBUG_HASH2 };\
+	if (__dynamic_dbg_enabled(KBUILD_MODNAME, TYPE_BOOLEAN,		    \
+						0, 0, DEBUG_HASH))	    \
+		printk(KERN_DEBUG KBUILD_MODNAME ":" fmt,		    \
+				##__VA_ARGS__);				    \
+	} while (0)
+
+#define dynamic_dev_dbg(dev, format, ...) do {				    \
+	static char mod_name[]						    \
+	__attribute__((section("__verbose_strings")))			    \
+	 = KBUILD_MODNAME;						    \
+	static struct mod_debug descriptor				    \
+	__used								    \
+	__attribute__((section("__verbose"), aligned(8))) =		    \
+	{ mod_name, mod_name, NULL, TYPE_BOOLEAN, DEBUG_HASH, DEBUG_HASH2 };\
+	if (__dynamic_dbg_enabled(KBUILD_MODNAME, TYPE_BOOLEAN,		    \
+						0, 0, DEBUG_HASH))	    \
+			dev_printk(KERN_DEBUG, dev,			    \
+					KBUILD_MODNAME ": " format,	    \
+					##__VA_ARGS__);			    \
+	} while (0)
+
+#else
+
+static inline int unregister_dynamic_debug_module(const char *mod_name)
+{
+	return 0;
+}
+static inline int __dynamic_dbg_enabled_helper(char *modname, int type,
+						int value, int hash)
+{
+	return 0;
+}
+
+#define __dynamic_dbg_enabled(module, type, value, level, hash)  ({ 0; })
+#define dynamic_pr_debug(fmt, ...)  do { } while (0)
+#define dynamic_dev_dbg(dev, format, ...)  do { } while (0)
+#endif
+
+#endif

include/linux/kernel.h

@@ -16,6 +16,7 @@
 #include <linux/log2.h>
 #include <linux/typecheck.h>
 #include <linux/ratelimit.h>
+#include <linux/dynamic_printk.h>
 #include <asm/byteorder.h>
 #include <asm/bug.h>
 
@@ -304,8 +305,12 @@ static inline char *pack_hex_byte(char *buf, u8 byte)
 #define pr_info(fmt, arg...) \
 	printk(KERN_INFO fmt, ##arg)
 
-#ifdef DEBUG
 /* If you are writing a driver, please use dev_dbg instead */
+#if defined(CONFIG_DYNAMIC_PRINTK_DEBUG)
+#define pr_debug(fmt, ...) do { \
+	dynamic_pr_debug(fmt, ##__VA_ARGS__); \
+	} while (0)
+#elif defined(DEBUG)
 #define pr_debug(fmt, arg...) \
 	printk(KERN_DEBUG fmt, ##arg)
 #else

include/linux/module.h

@@ -345,7 +345,6 @@ struct module
 	/* Reference counts */
 	struct module_ref ref[NR_CPUS];
 #endif
-
 };
 #ifndef MODULE_ARCH_INIT
 #define MODULE_ARCH_INIT {}

include/linux/platform_device.h

@@ -37,6 +37,8 @@ extern int platform_add_devices(struct platform_device **, int);
 
 extern struct platform_device *platform_device_register_simple(const char *, int id,
 					struct resource *, unsigned int);
+extern struct platform_device *platform_device_register_data(struct device *,
+		const char *, int, const void *, size_t);
 
 extern struct platform_device *platform_device_alloc(const char *name, int id);
 extern int platform_device_add_resources(struct platform_device *pdev, struct resource *res, unsigned int num);

include/linux/sysfs.h

@@ -78,6 +78,8 @@ struct sysfs_ops {
 	ssize_t	(*store)(struct kobject *,struct attribute *,const char *, size_t);
 };
 
+struct sysfs_dirent;
+
 #ifdef CONFIG_SYSFS
 
 int sysfs_schedule_callback(struct kobject *kobj, void (*func)(void *),
@@ -117,9 +119,14 @@ int sysfs_add_file_to_group(struct kobject *kobj,
 void sysfs_remove_file_from_group(struct kobject *kobj,
 			const struct attribute *attr, const char *group);
 
-void sysfs_notify(struct kobject *kobj, char *dir, char *attr);
-
-extern int __must_check sysfs_init(void);
+void sysfs_notify(struct kobject *kobj, const char *dir, const char *attr);
+void sysfs_notify_dirent(struct sysfs_dirent *sd);
+struct sysfs_dirent *sysfs_get_dirent(struct sysfs_dirent *parent_sd,
+				      const unsigned char *name);
+struct sysfs_dirent *sysfs_get(struct sysfs_dirent *sd);
+void sysfs_put(struct sysfs_dirent *sd);
+void sysfs_printk_last_file(void);
+int __must_check sysfs_init(void);
 
 #else /* CONFIG_SYSFS */
 
@@ -222,7 +229,24 @@ static inline void sysfs_remove_file_from_group(struct kobject *kobj,
 {
 }
 
-static inline void sysfs_notify(struct kobject *kobj, char *dir, char *attr)
+static inline void sysfs_notify(struct kobject *kobj, const char *dir,
+				const char *attr)
+{
+}
+static inline void sysfs_notify_dirent(struct sysfs_dirent *sd)
+{
+}
+static inline
+struct sysfs_dirent *sysfs_get_dirent(struct sysfs_dirent *parent_sd,
+				      const unsigned char *name)
+{
+	return NULL;
+}
+static inline struct sysfs_dirent *sysfs_get(struct sysfs_dirent *sd)
+{
+	return NULL;
+}
+static inline void sysfs_put(struct sysfs_dirent *sd)
 {
 }
 
@@ -231,6 +255,10 @@ static inline int __must_check sysfs_init(void)
 	return 0;
 }
 
+static inline void sysfs_printk_last_file(void)
+{
+}
+
 #endif /* CONFIG_SYSFS */
 
 #endif /* _SYSFS_H_ */