driverfs: Move driverfs calls from drivers/base/*.c to drivers/base/fs/*.c

This cleans up the drivers/base/ files, so they deal mainly with registration.

It also provides a good place to put the glue needed for bus and driver files in driverfs. 

drivers/base/Makefile

 # Makefile for the Linux device tree
 
-obj-y		:= core.o sys.o interface.o fs.o power.o bus.o \
+obj-y		:= core.o sys.o interface.o power.o bus.o \
 			driver.o 
 
-export-objs	:= core.o fs.o power.o sys.o bus.o driver.o
+obj-y		+= fs/
+
+export-objs	:= core.o power.o sys.o bus.o driver.o
 
 include $(TOPDIR)/Rules.make

drivers/base/base.h

@@ -12,10 +12,15 @@ extern spinlock_t device_lock;
 extern int bus_add_device(struct device * dev);
 extern void bus_remove_device(struct device * dev);
 
-extern int device_create_dir(struct driver_dir_entry * dir, struct driver_dir_entry * parent);
 extern int device_make_dir(struct device * dev);
 extern void device_remove_dir(struct device * dev);
 
+extern int bus_make_dir(struct bus_type * bus);
+extern void bus_remove_dir(struct bus_type * bus);
+
+extern int driver_make_dir(struct device_driver * drv);
+extern void driver_remove_dir(struct device_driver * drv);
+
 extern int device_bus_link(struct device * dev);
 extern void device_remove_symlink(struct driver_dir_entry * dir, const char * name);
 

drivers/base/bus.c

@@ -12,17 +12,10 @@
 #include <linux/device.h>
 #include <linux/module.h>
 #include <linux/errno.h>
-#include <linux/stat.h>
-#include <linux/init.h>
 #include "base.h"
 
 static LIST_HEAD(bus_driver_list);
 
-static struct driver_dir_entry bus_dir = {
-	name:	"bus",
-	mode:	(S_IFDIR| S_IRWXU | S_IRUGO | S_IXUGO),
-};
-
 /**
  * bus_for_each_dev - walk list of devices and do something to each
  * @bus:	bus in question
@@ -148,23 +141,6 @@ void bus_remove_device(struct device * dev)
 	}
 }
 
-static int bus_make_dir(struct bus_type * bus)
-{
-	int error;
-	bus->dir.name = bus->name;
-
-	error = device_create_dir(&bus->dir,&bus_dir);
-	if (!error) {
-		bus->device_dir.name = "devices";
-		device_create_dir(&bus->device_dir,&bus->dir);
-
-		bus->driver_dir.name = "drivers";
-		device_create_dir(&bus->driver_dir,&bus->dir);
-	}
-	return error;
-}
-
-
 int bus_register(struct bus_type * bus)
 {
 	rwlock_init(&bus->lock);
@@ -191,21 +167,9 @@ void put_bus(struct bus_type * bus)
 		return;
 	list_del_init(&bus->node);
 	spin_unlock(&device_lock);
-
-	/* remove driverfs entries */
-	driverfs_remove_dir(&bus->driver_dir);
-	driverfs_remove_dir(&bus->device_dir);
-	driverfs_remove_dir(&bus->dir);
+	bus_remove_dir(bus);
 }
 
-static int __init bus_init(void)
-{
-	/* make 'bus' driverfs directory */
-	return driverfs_create_dir(&bus_dir,NULL);
-}
-
-core_initcall(bus_init);
-
 EXPORT_SYMBOL(bus_for_each_dev);
 EXPORT_SYMBOL(bus_for_each_drv);
 EXPORT_SYMBOL(bus_add_device);

drivers/base/driver.c

@@ -43,16 +43,6 @@ int driver_for_each_dev(struct device_driver * drv, void * data, int (*callback)
 	return error;
 }
 
-/**
- * driver_make_dir - create a driverfs directory for a driver
- * @drv:	driver in question
- */
-static int driver_make_dir(struct device_driver * drv)
-{
-	drv->dir.name = drv->name;
-	return device_create_dir(&drv->dir,&drv->bus->driver_dir);
-}
-
 /**
  * driver_register - register driver with bus
  * @drv:	driver to register
@@ -83,7 +73,7 @@ static void __remove_driver(struct device_driver * drv)
 {
 	pr_debug("Unregistering driver '%s' from bus '%s'\n",drv->name,drv->bus->name);
 	driver_detach(drv);
-	driverfs_remove_dir(&drv->dir);
+	driver_remove_dir(drv);
 	if (drv->release)
 		drv->release(drv);
 	put_bus(drv->bus);

drivers/base/fs/Makefile

+obj-y		:= device.o bus.o driver.o
+
+export-objs	:= device.o bus.o driver.o
+
+include $(TOPDIR)/Rules.make

drivers/base/fs/bus.c

+#include <linux/device.h>
+#include <linux/init.h>
+#include <linux/stat.h>
+#include "fs.h"
+
+static struct driver_dir_entry bus_dir = {
+	name:	"bus",
+	mode:	(S_IFDIR| S_IRWXU | S_IRUGO | S_IXUGO),
+};
+
+int bus_make_dir(struct bus_type * bus)
+{
+	int error;
+	bus->dir.name = bus->name;
+
+	error = device_create_dir(&bus->dir,&bus_dir);
+	if (!error) {
+		bus->device_dir.name = "devices";
+		device_create_dir(&bus->device_dir,&bus->dir);
+
+		bus->driver_dir.name = "drivers";
+		device_create_dir(&bus->driver_dir,&bus->dir);
+	}
+	return error;
+}
+
+void bus_remove_dir(struct bus_type * bus)
+{
+	/* remove driverfs entries */
+	driverfs_remove_dir(&bus->driver_dir);
+	driverfs_remove_dir(&bus->device_dir);
+	driverfs_remove_dir(&bus->dir);
+}
+
+static int __init bus_init(void)
+{
+	/* make 'bus' driverfs directory */
+	return driverfs_create_dir(&bus_dir,NULL);
+}
+
+core_initcall(bus_init);
+

drivers/base/fs/driver.c

+#include <linux/device.h>
+#include "fs.h"
+
+/**
+ * driver_make_dir - create a driverfs directory for a driver
+ * @drv:	driver in question
+ */
+int driver_make_dir(struct device_driver * drv)
+{
+	drv->dir.name = drv->name;
+	return device_create_dir(&drv->dir,&drv->bus->driver_dir);
+}
+
+void driver_remove_dir(struct device_driver * drv)
+{
+	driverfs_remove_dir(&drv->dir);
+}
+

drivers/base/fs/fs.h

+
+extern int device_create_dir(struct driver_dir_entry * dir, struct driver_dir_entry * parent);