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>

4 files changed, 8 insertions, 7 deletions

diff --git a/kernel/ksysfs.c b/kernel/ksysfs.c
index 65daa5373ca6..094e2bc101a8 100644
--- a/kernel/ksysfs.c
+++ b/kernel/ksysfs.c
@@ -94,7 +94,7 @@ static struct bin_attribute notes_attr = {
         .read = &notes_read,
 };
 
-decl_subsys(kernel, NULL, NULL);
+decl_subsys(kernel, NULL);
 EXPORT_SYMBOL_GPL(kernel_subsys);
 
 static struct attribute * kernel_attrs[] = {
diff --git a/kernel/module.c b/kernel/module.c
index c2e3e2e98801..68df79738b3b 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -1223,7 +1223,7 @@ int mod_sysfs_init(struct module *mod)
         err = kobject_set_name(&mod->mkobj.kobj, "%s", mod->name);
         if (err)
                 goto out;
-        kobj_set_kset_s(&mod->mkobj, module_subsys);
+        mod->mkobj.kobj.kset = &module_subsys;
         mod->mkobj.mod = mod;
 
         kobject_init(&mod->mkobj.kobj);
diff --git a/kernel/params.c b/kernel/params.c
index 7686417ee00e..9f051824097d 100644
--- a/kernel/params.c
+++ b/kernel/params.c
@@ -30,6 +30,8 @@
 #define DEBUGP(fmt, a...)
 #endif
 
+static struct kobj_type module_ktype;
+
 static inline char dash2underscore(char c)
 {
         if (c == '-')
@@ -560,7 +562,8 @@ static void __init kernel_param_sysfs_setup(const char *name,
         BUG_ON(!mk);
 
         mk->mod = THIS_MODULE;
-        kobj_set_kset_s(mk, module_subsys);
+        mk->kobj.kset = &module_subsys;
+        mk->kobj.ktype = &module_ktype;
         kobject_set_name(&mk->kobj, name);
         kobject_init(&mk->kobj);
         ret = kobject_add(&mk->kobj);
@@ -679,8 +682,6 @@ static struct sysfs_ops module_sysfs_ops = {
         .store = module_attr_store,
 };
 
-static struct kobj_type module_ktype;
-
 static int uevent_filter(struct kset *kset, struct kobject *kobj)
 {
         struct kobj_type *ktype = get_ktype(kobj);
@@ -694,7 +695,7 @@ static struct kset_uevent_ops module_uevent_ops = {
         .filter = uevent_filter,
 };
 
-decl_subsys(module, &module_ktype, &module_uevent_ops);
+decl_subsys(module, &module_uevent_ops);
 int module_sysfs_initialized;
 
 static void module_release(struct kobject *kobj)
diff --git a/kernel/power/main.c b/kernel/power/main.c
index f71c9504a5c5..1ef31c91ce0e 100644
--- a/kernel/power/main.c
+++ b/kernel/power/main.c
@@ -276,7 +276,7 @@ EXPORT_SYMBOL(pm_suspend);
 
 #endif /* CONFIG_SUSPEND */
 
-decl_subsys(power,NULL,NULL);
+decl_subsys(power, NULL);
 
 
 /**