kobject: remove struct kobj_type from struct kset

We don't need a "default" ktype for a kset.  We should set this
explicitly every time for each kset.  This change is needed so that we
can make ksets dynamic, and cleans up one of the odd, undocumented
assumption that the kset/kobject/ktype model has.

This patch is based on a lot of help from Kay Sievers.

Nasty bug in the block code was found by Dave Young
<hidave.darkstar@gmail.com>

Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: Dave Young <hidave.darkstar@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

arch/powerpc/platforms/pseries/power.c

@@ -57,7 +57,7 @@ static struct subsys_attribute auto_poweron_attr = {
 };
 
 #ifndef CONFIG_PM
-decl_subsys(power,NULL,NULL);
+decl_subsys(power, NULL);
 
 static struct attribute *g[] = {
         &auto_poweron_attr.attr,

arch/s390/hypfs/inode.c

@@ -490,7 +490,7 @@ static struct super_operations hypfs_s_ops = {
 	.show_options	= hypfs_show_options,
 };
 
-static decl_subsys(s390, NULL, NULL);
+static decl_subsys(s390, NULL);
 
 static int __init hypfs_init(void)
 {
@@ -506,7 +506,7 @@ static int __init hypfs_init(void)
 			goto fail_diag;
 		}
 	}
-	kobj_set_kset_s(&s390_subsys, hypervisor_subsys);
+	s390_subsys.kobj.kset = &hypervisor_subsys;
 	rc = subsystem_register(&s390_subsys);
 	if (rc)
 		goto fail_sysfs;

arch/s390/kernel/ipl.c

@@ -418,7 +418,7 @@ static struct attribute_group ipl_unknown_attr_group = {
 	.attrs = ipl_unknown_attrs,
 };
 
-static decl_subsys(ipl, NULL, NULL);
+static decl_subsys(ipl, NULL);
 
 /*
  * reipl section
@@ -590,7 +590,7 @@ static ssize_t reipl_type_store(struct kset *kset, const char *buf,
 static struct subsys_attribute reipl_type_attr =
 		__ATTR(reipl_type, 0644, reipl_type_show, reipl_type_store);
 
-static decl_subsys(reipl, NULL, NULL);
+static decl_subsys(reipl, NULL);
 
 /*
  * dump section
@@ -685,13 +685,13 @@ static ssize_t dump_type_store(struct kset *kset, const char *buf,
 static struct subsys_attribute dump_type_attr =
 		__ATTR(dump_type, 0644, dump_type_show, dump_type_store);
 
-static decl_subsys(dump, NULL, NULL);
+static decl_subsys(dump, NULL);
 
 /*
  * Shutdown actions section
  */
 
-static decl_subsys(shutdown_actions, NULL, NULL);
+static decl_subsys(shutdown_actions, NULL);
 
 /* on panic */
 

block/genhd.c

@@ -584,7 +584,7 @@ static struct kset_uevent_ops block_uevent_ops = {
 	.uevent		= block_uevent,
 };
 
-decl_subsys(block, &ktype_block, &block_uevent_ops);
+decl_subsys(block, &block_uevent_ops);
 
 /*
  * aggregate disk stat collector.  Uses the same stats that the sysfs
@@ -721,7 +721,8 @@ struct gendisk *alloc_disk_node(int minors, int node_id)
 			}
 		}
 		disk->minors = minors;
-		kobj_set_kset_s(disk,block_subsys);
+		disk->kobj.kset = &block_subsys;
+		disk->kobj.ktype = &ktype_block;
 		kobject_init(&disk->kobj);
 		rand_initialize_disk(disk);
 		INIT_WORK(&disk->async_notify,

drivers/acpi/bus.c

@@ -743,7 +743,7 @@ static int __init acpi_bus_init(void)
 	return -ENODEV;
 }
 
-decl_subsys(acpi, NULL, NULL);
+decl_subsys(acpi, NULL);
 
 static int __init acpi_init(void)
 {

drivers/base/bus.c

@@ -166,7 +166,7 @@ static struct kset_uevent_ops bus_uevent_ops = {
 	.filter = bus_uevent_filter,
 };
 
-static decl_subsys(bus, &bus_ktype, &bus_uevent_ops);
+static decl_subsys(bus, &bus_uevent_ops);
 
 
 #ifdef CONFIG_HOTPLUG
@@ -639,6 +639,7 @@ int bus_add_driver(struct device_driver *drv)
 	if (error)
 		goto out_put_bus;
 	drv->kobj.kset = &bus->drivers;
+	drv->kobj.ktype = &driver_ktype;
 	error = kobject_register(&drv->kobj);
 	if (error)
 		goto out_put_bus;
@@ -851,6 +852,7 @@ int bus_register(struct bus_type * bus)
 		goto out;
 
 	bus->subsys.kobj.kset = &bus_subsys;
+	bus->subsys.kobj.ktype = &bus_ktype;
 
 	retval = subsystem_register(&bus->subsys);
 	if (retval)
@@ -868,7 +870,6 @@ int bus_register(struct bus_type * bus)
 
 	kobject_set_name(&bus->drivers.kobj, "drivers");
 	bus->drivers.kobj.parent = &bus->subsys.kobj;
-	bus->drivers.ktype = &driver_ktype;
 	retval = kset_register(&bus->drivers);
 	if (retval)
 		goto bus_drivers_fail;

drivers/base/class.c

@@ -71,7 +71,7 @@ static struct kobj_type class_ktype = {
 };
 
 /* Hotplug events for classes go to the class_obj subsys */
-static decl_subsys(class, &class_ktype, NULL);
+static decl_subsys(class, NULL);
 
 
 int class_create_file(struct class * cls, const struct class_attribute * attr)
@@ -150,6 +150,7 @@ int class_register(struct class * cls)
 		return error;
 
 	cls->subsys.kobj.kset = &class_subsys;
+	cls->subsys.kobj.ktype = &class_ktype;
 
 	error = subsystem_register(&cls->subsys);
 	if (!error) {
@@ -452,7 +453,7 @@ static struct kset_uevent_ops class_uevent_ops = {
 	.uevent =	class_uevent,
 };
 
-static decl_subsys(class_obj, &class_device_ktype, &class_uevent_ops);
+static decl_subsys(class_obj, &class_uevent_ops);
 
 
 static int class_device_add_attrs(struct class_device * cd)
@@ -537,7 +538,8 @@ static struct class_device_attribute class_uevent_attr =
 
 void class_device_initialize(struct class_device *class_dev)
 {
-	kobj_set_kset_s(class_dev, class_obj_subsys);
+	class_dev->kobj.kset = &class_obj_subsys;
+	class_dev->kobj.ktype = &class_device_ktype;
 	kobject_init(&class_dev->kobj);
 	INIT_LIST_HEAD(&class_dev->node);
 }

drivers/base/core.c

@@ -405,7 +405,7 @@ static struct device_attribute devt_attr =
  *	devices_subsys - structure to be registered with kobject core.
  */
 
-decl_subsys(devices, &device_ktype, &device_uevent_ops);
+decl_subsys(devices, &device_uevent_ops);
 
 
 /**
@@ -525,7 +525,8 @@ static void klist_children_put(struct klist_node *n)
 
 void device_initialize(struct device *dev)
 {
-	kobj_set_kset_s(dev, devices_subsys);
+	dev->kobj.kset = &devices_subsys;
+	dev->kobj.ktype = &device_ktype;
 	kobject_init(&dev->kobj);
 	klist_init(&dev->klist_children, klist_children_get,
 		   klist_children_put);

drivers/base/firmware.c

@@ -15,11 +15,12 @@
 
 #include "base.h"
 
-static decl_subsys(firmware, NULL, NULL);
+static decl_subsys(firmware, NULL);
 
 int firmware_register(struct kset *s)
 {
-	kobj_set_kset_s(s, firmware_subsys);
+	s->kobj.kset = &firmware_subsys;
+	s->kobj.ktype = NULL;
 	return subsystem_register(s);
 }
 

drivers/base/hypervisor.c

@@ -11,7 +11,7 @@
 
 #include "base.h"
 
-decl_subsys(hypervisor, NULL, NULL);
+decl_subsys(hypervisor, NULL);
 EXPORT_SYMBOL_GPL(hypervisor_subsys);
 
 int __init hypervisor_init(void)

drivers/base/sys.c

@@ -131,7 +131,7 @@ EXPORT_SYMBOL_GPL(sysdev_class_remove_file);
 /*
  * declare system_subsys
  */
-static decl_subsys(system, &ktype_sysdev_class, NULL);
+static decl_subsys(system, NULL);
 
 int sysdev_class_register(struct sysdev_class * cls)
 {
@@ -139,6 +139,7 @@ int sysdev_class_register(struct sysdev_class * cls)
 		 kobject_name(&cls->kset.kobj));
 	INIT_LIST_HEAD(&cls->drivers);
 	cls->kset.kobj.parent = &system_subsys.kobj;
+	cls->kset.kobj.ktype = &ktype_sysdev_class;
 	cls->kset.kobj.kset = &system_subsys;
 	return kset_register(&cls->kset);
 }

drivers/edac/edac_mc_sysfs.c

@@ -744,7 +744,6 @@ static struct kobj_type ktype_mc_set_attribs = {
  */
 static struct kset mc_kset = {
 	.kobj = {.ktype = &ktype_mc_set_attribs },
-	.ktype = &ktype_mci,
 };
 
 
@@ -767,6 +766,7 @@ int edac_mc_register_sysfs_main_kobj(struct mem_ctl_info *mci)
 
 	/* this instance become part of the mc_kset */
 	kobj_mci->kset = &mc_kset;
+	kobj_mci->ktype = &ktype_mci;
 
 	/* set the name of the mc<id> object */
 	err = kobject_set_name(kobj_mci, "mc%d", mci->mc_idx);

drivers/firmware/edd.c

@@ -631,7 +631,7 @@ static struct kobj_type edd_ktype = {
 	.default_attrs	= def_attrs,
 };
 
-static decl_subsys(edd, &edd_ktype, NULL);
+static decl_subsys(edd, NULL);
 
 
 /**
@@ -723,7 +723,8 @@ edd_device_register(struct edd_device *edev, int i)
 	edd_dev_set_info(edev, i);
 	kobject_set_name(&edev->kobj, "int13_dev%02x",
 			 0x80 + i);
-	kobj_set_kset_s(edev,edd_subsys);
+	edev->kobj.kset = &edd_subsys;
+	edev->kobj.ktype = &edd_ktype;
 	error = kobject_register(&edev->kobj);
 	if (!error)
 		edd_populate_dir(edev);

drivers/firmware/efivars.c

@@ -583,8 +583,8 @@ static struct subsys_attribute *efi_subsys_attrs[] = {
 	NULL,	/* maybe more in the future? */
 };
 
-static decl_subsys(vars, &efivar_ktype, NULL);
-static decl_subsys(efi, NULL, NULL);
+static decl_subsys(vars, NULL);
+static decl_subsys(efi, NULL);
 
 /*
  * efivar_create_sysfs_entry()
@@ -629,7 +629,8 @@ efivar_create_sysfs_entry(unsigned long variable_name_size,
 	efi_guid_unparse(vendor_guid, short_name + strlen(short_name));
 
 	kobject_set_name(&new_efivar->kobj, "%s", short_name);
-	kobj_set_kset_s(new_efivar, vars_subsys);
+	new_efivar->kobj.kset = &vars_subsys;
+	new_efivar->kobj.ktype = &efivar_ktype;
 	i = kobject_register(&new_efivar->kobj);
 	if (i) {
 		kfree(short_name);
@@ -687,7 +688,7 @@ efivars_init(void)
 		goto out_free;
 	}
 
-	kobj_set_kset_s(&vars_subsys, efi_subsys);
+	vars_subsys.kobj.kset = &efi_subsys;
 
 	error = subsystem_register(&vars_subsys);
 

drivers/parisc/pdc_stable.c

@@ -964,8 +964,8 @@ static struct subsys_attribute *pdcs_subsys_attrs[] = {
 	NULL,
 };
 
-static decl_subsys(paths, &ktype_pdcspath, NULL);
-static decl_subsys(stable, NULL, NULL);
+static decl_subsys(paths, NULL);
+static decl_subsys(stable, NULL);
 
 /**
  * pdcs_register_pathentries - Prepares path entries kobjects for sysfs usage.
@@ -997,7 +997,8 @@ pdcs_register_pathentries(void)
 
 		if ((err = kobject_set_name(&entry->kobj, "%s", entry->name)))
 			return err;
-		kobj_set_kset_s(entry, paths_subsys);
+		entry->kobj.kset = &paths_subsys;
+		entry->kobj.ktype = &ktype_pdcspath;
 		if ((err = kobject_register(&entry->kobj)))
 			return err;
 		
@@ -1072,7 +1073,7 @@ pdc_stable_init(void)
 			error = subsys_create_file(&stable_subsys, attr);
 	
 	/* register the paths subsys as a subsystem of stable subsys */
-	kobj_set_kset_s(&paths_subsys, stable_subsys);
+	paths_subsys.kobj.kset = &stable_subsys;
 	if ((rc = subsystem_register(&paths_subsys)))
 		goto fail_subsysreg;
 

drivers/pci/hotplug/pci_hotplug_core.c

@@ -96,7 +96,7 @@ static struct kobj_type hotplug_slot_ktype = {
 	.release = &hotplug_slot_release,
 };
 
-decl_subsys_name(pci_hotplug_slots, slots, &hotplug_slot_ktype, NULL);
+decl_subsys_name(pci_hotplug_slots, slots, NULL);
 
 /* these strings match up with the values in pci_bus_speed */
 static char *pci_bus_speed_strings[] = {
@@ -633,7 +633,8 @@ int pci_hp_register (struct hotplug_slot *slot)
 	}
 
 	kobject_set_name(&slot->kobj, "%s", slot->name);
-	kobj_set_kset_s(slot, pci_hotplug_slots_subsys);
+	slot->kobj.kset = &pci_hotplug_slots_subsys;
+	slot->kobj.ktype = &hotplug_slot_ktype;
 
 	/* this can fail if we have already registered a slot with the same name */
 	if (kobject_register(&slot->kobj)) {
@@ -701,7 +702,7 @@ static int __init pci_hotplug_init (void)
 {
 	int result;
 
-	kobj_set_kset_s(&pci_hotplug_slots_subsys, pci_bus_type.subsys);
+	pci_hotplug_slots_subsys.kobj.kset = &pci_bus_type.subsys;
 	result = subsystem_register(&pci_hotplug_slots_subsys);
 	if (result) {
 		err("Register subsys with error %d\n", result);

drivers/pci/hotplug/rpadlpar_sysfs.c

@@ -131,7 +131,6 @@ struct kobj_type ktype_dlpar_io = {
 struct kset dlpar_io_kset = {
 	.kobj = {.ktype = &ktype_dlpar_io,
 		 .parent = &pci_hotplug_slots_subsys.kobj},
-	.ktype = &ktype_dlpar_io,
 };
 
 int dlpar_sysfs_init(void)

drivers/uio/uio.c

@@ -160,7 +160,7 @@ static int uio_dev_add_attributes(struct uio_device *idev)
 		if (!map_found) {
 			map_found = 1;
 			kobject_set_name(&idev->map_attr_kset.kobj,"maps");
-			idev->map_attr_kset.ktype = &map_attr_type;
+			idev->map_attr_kset.kobj.ktype = &map_attr_type;
 			idev->map_attr_kset.kobj.parent = &idev->dev->kobj;
 			ret = kset_register(&idev->map_attr_kset);
 			if (ret)

fs/configfs/mount.c

@@ -128,7 +128,7 @@ void configfs_release_fs(void)
 }
 
 
-static decl_subsys(config, NULL, NULL);
+static decl_subsys(config, NULL);
 
 static int __init configfs_init(void)
 {
@@ -140,7 +140,7 @@ static int __init configfs_init(void)
 	if (!configfs_dir_cachep)
 		goto out;
 
-	kobj_set_kset_s(&config_subsys, kernel_subsys);
+	config_subsys.kobj.kset = &kernel_subsys;
 	err = subsystem_register(&config_subsys);
 	if (err) {
 		kmem_cache_destroy(configfs_dir_cachep);

fs/debugfs/inode.c

@@ -426,13 +426,13 @@ exit:
 }
 EXPORT_SYMBOL_GPL(debugfs_rename);
 
-static decl_subsys(debug, NULL, NULL);
+static decl_subsys(debug, NULL);
 
 static int __init debugfs_init(void)
 {
 	int retval;
 
-	kobj_set_kset_s(&debug_subsys, kernel_subsys);
+	debug_subsys.kobj.kset = &kernel_subsys;
 	retval = subsystem_register(&debug_subsys);
 	if (retval)
 		return retval;