Merge bk://kernel.bkbits.net//home/mochel/linux-2.6-core

into kroah.com:/home/greg/linux/BK/driver-2.6

drivers/base/bus.c

@@ -392,6 +392,38 @@ static void driver_detach(struct device_driver * drv)
 	
 }
 
+static int device_add_attrs(struct bus_type * bus, struct device * dev)
+{
+	int error = 0;
+	int i;
+
+	if (bus->dev_attrs) {
+		for (i = 0; attr_name(bus->dev_attrs[i]); i++) {
+			error = device_create_file(dev,&bus->dev_attrs[i]);
+			if (error)
+				goto Err;
+		}
+	}
+ Done:
+	return error;
+ Err:
+	while (--i >= 0)
+		device_remove_file(dev,&bus->dev_attrs[i]);
+	goto Done;
+}
+
+
+static void device_remove_attrs(struct bus_type * bus, struct device * dev)
+{
+	int i;
+	
+	if (bus->dev_attrs) {
+		for (i = 0; attr_name(bus->dev_attrs[i]); i++)
+			device_remove_file(dev,&bus->dev_attrs[i]);
+	}
+}
+
+
 /**
  *	bus_add_device - add device to bus
  *	@dev:	device being added
@@ -411,6 +443,7 @@ int bus_add_device(struct device * dev)
 		list_add_tail(&dev->bus_list,&dev->bus->devices.list);
 		device_attach(dev);
 		up_write(&dev->bus->subsys.rwsem);
+		device_add_attrs(bus,dev);
 		sysfs_create_link(&bus->devices.kobj,&dev->kobj,dev->bus_id);
 	}
 	return error;
@@ -429,6 +462,7 @@ void bus_remove_device(struct device * dev)
 {
 	if (dev->bus) {
 		sysfs_remove_link(&dev->bus->devices.kobj,dev->bus_id);
+		device_remove_attrs(dev->bus,dev);
 		down_write(&dev->bus->subsys.rwsem);
 		pr_debug("bus %s: remove device %s\n",dev->bus->name,dev->bus_id);
 		device_release_driver(dev);
@@ -549,6 +583,41 @@ struct bus_type * find_bus(char * name)
 	return k ? to_bus(k) : NULL;
 }
 
+
+/**
+ *	bus_add_attrs - Add default attributes for this bus.
+ *	@bus:	Bus that has just been registered.
+ */
+
+static int bus_add_attrs(struct bus_type * bus)
+{
+	int error = 0;
+	int i;
+
+	if (bus->bus_attrs) {
+		for (i = 0; attr_name(bus->bus_attrs[i]); i++) {
+			if ((error = bus_create_file(bus,&bus->bus_attrs[i])))
+				goto Err;
+		}
+	}
+ Done:
+	return error;
+ Err:
+	while (--i >= 0)
+		bus_remove_file(bus,&bus->bus_attrs[i]);
+	goto Done;
+}
+
+static void bus_remove_attrs(struct bus_type * bus)
+{
+	int i;
+	
+	if (bus->bus_attrs) {
+		for (i = 0; attr_name(bus->bus_attrs[i]); i++)
+			bus_remove_file(bus,&bus->bus_attrs[i]);
+	}
+}
+
 /**
  *	bus_register - register a bus with the system.
  *	@bus:	bus.
@@ -582,6 +651,7 @@ int bus_register(struct bus_type * bus)
 	retval = kset_register(&bus->drivers);
 	if (retval)
 		goto bus_drivers_fail;
+	bus_add_attrs(bus);
 
 	pr_debug("bus type '%s' registered\n",bus->name);
 	return 0;
@@ -605,6 +675,7 @@ int bus_register(struct bus_type * bus)
 void bus_unregister(struct bus_type * bus)
 {
 	pr_debug("bus %s: unregistering\n",bus->name);
+	bus_remove_attrs(bus);
 	kset_unregister(&bus->drivers);
 	kset_unregister(&bus->devices);
 	subsystem_unregister(&bus->subsys);

drivers/base/class.c

@@ -100,6 +100,37 @@ void class_put(struct class * cls)
 	subsys_put(&cls->subsys);
 }
 
+
+static int add_class_attrs(struct class * cls)
+{
+	int i;
+	int error = 0;
+
+	if (cls->class_attrs) {
+		for (i = 0; attr_name(cls->class_attrs[i]); i++) {
+			error = class_create_file(cls,&cls->class_attrs[i]);
+			if (error)
+				goto Err;
+		}
+	}
+ Done:
+	return error;
+ Err:
+	while (--i >= 0)
+		class_remove_file(cls,&cls->class_attrs[i]);
+	goto Done;
+}
+
+static void remove_class_attrs(struct class * cls)
+{
+	int i;
+
+	if (cls->class_attrs) {
+		for (i = 0; attr_name(cls->class_attrs[i]); i++)
+			class_remove_file(cls,&cls->class_attrs[i]);
+	}
+}
+
 int class_register(struct class * cls)
 {
 	int error;
@@ -115,18 +146,21 @@ int class_register(struct class * cls)
 	subsys_set_kset(cls,class_subsys);
 
 	error = subsystem_register(&cls->subsys);
-	if (error)
+	if (!error) {
+		error = add_class_attrs(class_get(cls));
+		class_put(cls);
+	}
 	return error;
-
-	return 0;
 }
 
 void class_unregister(struct class * cls)
 {
 	pr_debug("device class '%s': unregistering\n",cls->name);
+	remove_class_attrs(cls);
 	subsystem_unregister(&cls->subsys);
 }
 
+
 /* Class Device Stuff */
 
 int class_device_create_file(struct class_device * class_dev,
@@ -272,6 +306,40 @@ static struct kset_hotplug_ops class_hotplug_ops = {
 
 static decl_subsys(class_obj, &ktype_class_device, &class_hotplug_ops);
 
+
+static int class_device_add_attrs(struct class_device * cd)
+{
+	int i;
+	int error = 0;
+	struct class * cls = cd->class;
+
+	if (cls->class_dev_attrs) {
+		for (i = 0; attr_name(cls->class_dev_attrs[i]); i++) {
+			error = class_device_create_file(cd,
+							 &cls->class_dev_attrs[i]);
+			if (error)
+				goto Err;
+		}
+	}
+ Done:
+	return error;
+ Err:
+	while (--i >= 0)
+		class_device_remove_file(cd,&cls->class_dev_attrs[i]);
+	goto Done;
+}
+
+static void class_device_remove_attrs(struct class_device * cd)
+{
+	int i;
+	struct class * cls = cd->class;
+
+	if (cls->class_dev_attrs) {
+		for (i = 0; attr_name(cls->class_dev_attrs[i]); i++)
+			class_device_remove_file(cd,&cls->class_dev_attrs[i]);
+	}
+}
+
 void class_device_initialize(struct class_device *class_dev)
 {
 	kobj_set_kset_s(class_dev, class_obj_subsys);
@@ -311,7 +379,7 @@ int class_device_add(struct class_device *class_dev)
 				class_intf->add(class_dev);
 		up_write(&parent->subsys.rwsem);
 	}
-
+	class_device_add_attrs(class_dev);
 	class_device_dev_link(class_dev);
 	class_device_driver_link(class_dev);
 
@@ -344,6 +412,7 @@ void class_device_del(struct class_device *class_dev)
 
 	class_device_dev_unlink(class_dev);
 	class_device_driver_unlink(class_dev);
+	class_device_remove_attrs(class_dev);
 
 	kobject_del(&class_dev->kobj);
 

include/linux/device.h

@@ -54,6 +54,9 @@ struct bus_type {
 	struct kset		drivers;
 	struct kset		devices;
 
+	struct bus_attribute	* bus_attrs;
+	struct device_attribute	* dev_attrs;
+
 	int		(*match)(struct device * dev, struct device_driver * drv);
 	struct device * (*add)	(struct device * parent, char * bus_id);
 	int		(*hotplug) (struct device *dev, char **envp, 
@@ -143,6 +146,9 @@ struct class {
 	struct list_head	children;
 	struct list_head	interfaces;
 
+	struct class_attribute		* class_attrs;
+	struct class_device_attribute	* class_dev_attrs;
+
 	int	(*hotplug)(struct class_device *dev, char **envp, 
 			   int num_envp, char *buffer, int buffer_size);
 

include/linux/sysfs.h

@@ -43,7 +43,7 @@ struct attribute_group {
 
 #define __ATTR_NULL { .attr = { .name = NULL } }
 
-
+#define attr_name(_attr) (_attr).attr.name
 
 struct bin_attribute {
 	struct attribute	attr;