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remove "struct subsystem" as it is no longer needed

Browse source 
We need to work on cleaning up the relationship between kobjects, ksets and
ktypes.  The removal of 'struct subsystem' is the first step of this,
especially as it is not really needed at all.

Thanks to Kay for fixing the bugs in this patch.

Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Greg Kroah-Hartman 2007-04-13 13:15:19 -07:00
commit 823bccfc40
46 changed files with 231 additions and 292 deletions
Download patch file Download diff file Expand all files Collapse all files

2
drivers/base/base.h
View file

@ -45,3 +45,5 @@ struct class_device_attribute *to_class_dev_attr(struct attribute *_attr)
extern char *make_class_name(const char *name, struct kobject *kobj);
extern void devres_release_all(struct device *dev);
extern struct kset devices_subsys;

16
drivers/base/bus.c
View file

@ -17,7 +17,7 @@
#include "power/power.h"
#define to_bus_attr(_attr) container_of(_attr, struct bus_attribute, attr)
#define to_bus(obj) container_of(obj, struct bus_type, subsys.kset.kobj)
#define to_bus(obj) container_of(obj, struct bus_type, subsys.kobj)
/*
* sysfs bindings for drivers
@ -123,7 +123,7 @@ int bus_create_file(struct bus_type * bus, struct bus_attribute * attr)
{
int error;
if (get_bus(bus)) {
error = sysfs_create_file(&bus->subsys.kset.kobj, &attr->attr);
error = sysfs_create_file(&bus->subsys.kobj, &attr->attr);
put_bus(bus);
} else
error = -EINVAL;
@ -133,7 +133,7 @@ int bus_create_file(struct bus_type * bus, struct bus_attribute * attr)
void bus_remove_file(struct bus_type * bus, struct bus_attribute * attr)
{
if (get_bus(bus)) {
sysfs_remove_file(&bus->subsys.kset.kobj, &attr->attr);
sysfs_remove_file(&bus->subsys.kobj, &attr->attr);
put_bus(bus);
}
}
@ -397,7 +397,7 @@ static void device_remove_attrs(struct bus_type * bus, struct device * dev)
static int make_deprecated_bus_links(struct device *dev)
{
return sysfs_create_link(&dev->kobj,
&dev->bus->subsys.kset.kobj, "bus");
&dev->bus->subsys.kobj, "bus");
}
static void remove_deprecated_bus_links(struct device *dev)
@ -431,7 +431,7 @@ int bus_add_device(struct device * dev)
if (error)
goto out_id;
error = sysfs_create_link(&dev->kobj,
&dev->bus->subsys.kset.kobj, "subsystem");
&dev->bus->subsys.kobj, "subsystem");
if (error)
goto out_subsys;
error = make_deprecated_bus_links(dev);
@ -810,7 +810,7 @@ int bus_register(struct bus_type * bus)
BLOCKING_INIT_NOTIFIER_HEAD(&bus->bus_notifier);
retval = kobject_set_name(&bus->subsys.kset.kobj, "%s", bus->name);
retval = kobject_set_name(&bus->subsys.kobj, "%s", bus->name);
if (retval)
goto out;
@ -820,13 +820,13 @@ int bus_register(struct bus_type * bus)
goto out;
kobject_set_name(&bus->devices.kobj, "devices");
bus->devices.subsys = &bus->subsys;
bus->devices.kobj.parent = &bus->subsys.kobj;
retval = kset_register(&bus->devices);
if (retval)
goto bus_devices_fail;
kobject_set_name(&bus->drivers.kobj, "drivers");
bus->drivers.subsys = &bus->subsys;
bus->drivers.kobj.parent = &bus->subsys.kobj;
bus->drivers.ktype = &ktype_driver;
retval = kset_register(&bus->drivers);
if (retval)

18
drivers/base/class.c
View file

@ -19,10 +19,8 @@
#include <linux/slab.h>
#include "base.h"
extern struct subsystem devices_subsys;
#define to_class_attr(_attr) container_of(_attr, struct class_attribute, attr)
#define to_class(obj) container_of(obj, struct class, subsys.kset.kobj)
#define to_class(obj) container_of(obj, struct class, subsys.kobj)
static ssize_t
class_attr_show(struct kobject * kobj, struct attribute * attr, char * buf)
@ -80,7 +78,7 @@ int class_create_file(struct class * cls, const struct class_attribute * attr)
{
int error;
if (cls) {
error = sysfs_create_file(&cls->subsys.kset.kobj, &attr->attr);
error = sysfs_create_file(&cls->subsys.kobj, &attr->attr);
} else
error = -EINVAL;
return error;
@ -89,7 +87,7 @@ int class_create_file(struct class * cls, const struct class_attribute * attr)
void class_remove_file(struct class * cls, const struct class_attribute * attr)
{
if (cls)
sysfs_remove_file(&cls->subsys.kset.kobj, &attr->attr);
sysfs_remove_file(&cls->subsys.kobj, &attr->attr);
}
static struct class *class_get(struct class *cls)
@ -147,7 +145,7 @@ int class_register(struct class * cls)
INIT_LIST_HEAD(&cls->interfaces);
kset_init(&cls->class_dirs);
init_MUTEX(&cls->sem);
error = kobject_set_name(&cls->subsys.kset.kobj, "%s", cls->name);
error = kobject_set_name(&cls->subsys.kobj, "%s", cls->name);
if (error)
return error;
@ -611,7 +609,7 @@ int class_device_add(struct class_device *class_dev)
if (parent_class_dev)
class_dev->kobj.parent = &parent_class_dev->kobj;
else
class_dev->kobj.parent = &parent_class->subsys.kset.kobj;
class_dev->kobj.parent = &parent_class->subsys.kobj;
error = kobject_add(&class_dev->kobj);
if (error)
@ -619,7 +617,7 @@ int class_device_add(struct class_device *class_dev)
/* add the needed attributes to this device */
error = sysfs_create_link(&class_dev->kobj,
&parent_class->subsys.kset.kobj, "subsystem");
&parent_class->subsys.kobj, "subsystem");
if (error)
goto out3;
class_dev->uevent_attr.attr.name = "uevent";
@ -917,8 +915,8 @@ int __init classes_init(void)
/* ick, this is ugly, the things we go through to keep from showing up
* in sysfs... */
subsystem_init(&class_obj_subsys);
if (!class_obj_subsys.kset.subsys)
class_obj_subsys.kset.subsys = &class_obj_subsys;
if (!class_obj_subsys.kobj.parent)
class_obj_subsys.kobj.parent = &class_obj_subsys.kobj;
return 0;
}

22
drivers/base/core.c
View file

@ -565,7 +565,7 @@ static struct kobject * get_device_parent(struct device *dev,
/* Set the parent to the class, not the parent device */
/* this keeps sysfs from having a symlink to make old udevs happy */
if (dev->class)
return &dev->class->subsys.kset.kobj;
return &dev->class->subsys.kobj;
else if (parent)
return &parent->kobj;
@ -577,7 +577,7 @@ static struct kobject *virtual_device_parent(struct device *dev)
static struct kobject *virtual_dir = NULL;
if (!virtual_dir)
virtual_dir = kobject_add_dir(&devices_subsys.kset.kobj, "virtual");
virtual_dir = kobject_add_dir(&devices_subsys.kobj, "virtual");
return virtual_dir;
}
@ -711,12 +711,12 @@ int device_add(struct device *dev)
}
if (dev->class) {
sysfs_create_link(&dev->kobj, &dev->class->subsys.kset.kobj,
sysfs_create_link(&dev->kobj, &dev->class->subsys.kobj,
"subsystem");
/* If this is not a "fake" compatible device, then create the
* symlink from the class to the device. */
if (dev->kobj.parent != &dev->class->subsys.kset.kobj)
sysfs_create_link(&dev->class->subsys.kset.kobj,
if (dev->kobj.parent != &dev->class->subsys.kobj)
sysfs_create_link(&dev->class->subsys.kobj,
&dev->kobj, dev->bus_id);
if (parent) {
sysfs_create_link(&dev->kobj, &dev->parent->kobj,
@ -774,8 +774,8 @@ int device_add(struct device *dev)
sysfs_remove_link(&dev->kobj, "subsystem");
/* If this is not a "fake" compatible device, remove the
* symlink from the class to the device. */
if (dev->kobj.parent != &dev->class->subsys.kset.kobj)
sysfs_remove_link(&dev->class->subsys.kset.kobj,
if (dev->kobj.parent != &dev->class->subsys.kobj)
sysfs_remove_link(&dev->class->subsys.kobj,
dev->bus_id);
if (parent) {
#ifdef CONFIG_SYSFS_DEPRECATED
@ -875,8 +875,8 @@ void device_del(struct device * dev)
sysfs_remove_link(&dev->kobj, "subsystem");
/* If this is not a "fake" compatible device, remove the
* symlink from the class to the device. */
if (dev->kobj.parent != &dev->class->subsys.kset.kobj)
sysfs_remove_link(&dev->class->subsys.kset.kobj,
if (dev->kobj.parent != &dev->class->subsys.kobj)
sysfs_remove_link(&dev->class->subsys.kobj,
dev->bus_id);
if (parent) {
#ifdef CONFIG_SYSFS_DEPRECATED
@ -1192,9 +1192,9 @@ int device_rename(struct device *dev, char *new_name)
#endif
if (dev->class) {
sysfs_remove_link(&dev->class->subsys.kset.kobj,
sysfs_remove_link(&dev->class->subsys.kobj,
old_symlink_name);
sysfs_create_link(&dev->class->subsys.kset.kobj, &dev->kobj,
sysfs_create_link(&dev->class->subsys.kobj, &dev->kobj,
dev->bus_id);
}
put_device(dev);

6
drivers/base/firmware.c
View file

@ -17,13 +17,13 @@
static decl_subsys(firmware, NULL, NULL);
int firmware_register(struct subsystem * s)
int firmware_register(struct kset *s)
{
kset_set_kset_s(s, firmware_subsys);
kobj_set_kset_s(s, firmware_subsys);
return subsystem_register(s);
}
void firmware_unregister(struct subsystem * s)
void firmware_unregister(struct kset *s)
{
subsystem_unregister(s);
}

4
drivers/base/power/shutdown.c
View file

@ -16,8 +16,6 @@
#define to_dev(node) container_of(node, struct device, kobj.entry)
extern struct subsystem devices_subsys;
/**
* We handle system devices differently - we suspend and shut them
@ -36,7 +34,7 @@ void device_shutdown(void)
{
struct device * dev, *devn;
list_for_each_entry_safe_reverse(dev, devn, &devices_subsys.kset.list,
list_for_each_entry_safe_reverse(dev, devn, &devices_subsys.list,
kobj.entry) {
if (dev->bus && dev->bus->shutdown) {
dev_dbg(dev, "shutdown\n");

14
drivers/base/sys.c
View file

@ -25,7 +25,7 @@
#include "base.h"
extern struct subsystem devices_subsys;
extern struct kset devices_subsys;
#define to_sysdev(k) container_of(k, struct sys_device, kobj)
#define to_sysdev_attr(a) container_of(a, struct sysdev_attribute, attr)
@ -138,7 +138,7 @@ int sysdev_class_register(struct sysdev_class * cls)
pr_debug("Registering sysdev class '%s'\n",
kobject_name(&cls->kset.kobj));
INIT_LIST_HEAD(&cls->drivers);
cls->kset.subsys = &system_subsys;
cls->kset.kobj.parent = &system_subsys.kobj;
kset_set_kset_s(cls, system_subsys);
return kset_register(&cls->kset);
}
@ -309,7 +309,7 @@ void sysdev_shutdown(void)
pr_debug("Shutting Down System Devices\n");
down(&sysdev_drivers_lock);
list_for_each_entry_reverse(cls, &system_subsys.kset.list,
list_for_each_entry_reverse(cls, &system_subsys.list,
kset.kobj.entry) {
struct sys_device * sysdev;
@ -384,7 +384,7 @@ int sysdev_suspend(pm_message_t state)
pr_debug("Suspending System Devices\n");
list_for_each_entry_reverse(cls, &system_subsys.kset.list,
list_for_each_entry_reverse(cls, &system_subsys.list,
kset.kobj.entry) {
pr_debug("Suspending type '%s':\n",
@ -457,7 +457,7 @@ gbl_driver:
}
/* resume other classes */
list_for_each_entry_continue(cls, &system_subsys.kset.list,
list_for_each_entry_continue(cls, &system_subsys.list,
kset.kobj.entry) {
list_for_each_entry(err_dev, &cls->kset.list, kobj.entry) {
pr_debug(" %s\n", kobject_name(&err_dev->kobj));
@ -483,7 +483,7 @@ int sysdev_resume(void)
pr_debug("Resuming System Devices\n");
list_for_each_entry(cls, &system_subsys.kset.list, kset.kobj.entry) {
list_for_each_entry(cls, &system_subsys.list, kset.kobj.entry) {
struct sys_device * sysdev;
pr_debug("Resuming type '%s':\n",
@ -501,7 +501,7 @@ int sysdev_resume(void)
int __init system_bus_init(void)
{
system_subsys.kset.kobj.parent = &devices_subsys.kset.kobj;
system_subsys.kobj.parent = &devices_subsys.kobj;
return subsystem_register(&system_subsys);
}