[PATCH 039/196] kobject: add kobject_init_ng function

Greg Kroah-Hartman
2008-01-25T07:27:42Z

This is what the kobject_init function is going to become.

Add this to the kernel and then we can convert the tree over to use it.

Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
include/linux/kobject.h | 1 +
lib/kobject.c | 42 ++++++++++++++++++++++++++++++++++++++++++
2 files changed, 43 insertions(+), 0 deletions(-)

diff --git a/include/linux/kobject.h b/include/linux/kobject.h
index 2d19a07..bdf4f7c 100644
--- a/include/linux/kobject.h
+++ b/include/linux/kobject.h
@@ -79,6 +79,7 @@ static inline const char * kobject_name(const struct kobject * kobj)
}

extern void kobject_init(struct kobject *);
+extern void kobject_init_ng(struct kobject *kobj, struct kobj_type *ktype);
extern int __must_check kobject_add(struct kobject *);
extern void kobject_del(struct kobject *);

diff --git a/lib/kobject.c b/lib/kobject.c
index a152036..60586bc 100644
--- a/lib/kobject.c
+++ b/lib/kobject.c
@@ -283,6 +283,48 @@ int kobject_set_name(struct kobject *kobj, const char *fmt, ...)
EXPORT_SYMBOL(kobject_set_name);

/**
+ * kobject_init_ng - initialize a kobject structure
+ * @kobj: pointer to the kobject to initialize
+ * @ktype: pointer to the ktype for this kobject.
+ *
+ * This function will properly initialize a kobject such that it can then
+ * be passed to the kobject_add() call.
+ *
+ * After this function is called, the kobject MUST be cleaned up by a call
+ * to kobject_put(), not by a call to kfree directly to ensure that all of
+ * the memory is cleaned up properly.
+ */
+void kobject_init_ng(struct kobject *kobj, struct kobj_type *ktype)
+{
+ char *err_str;
+
+ if (!kobj) {
+ err_str = "invalid kobject pointer!";
+ goto error;
+ }
+ if (!ktype) {
+ err_str = "must have a ktype to be initialized properly!\n";
+ goto error;
+ }
+ if (atomic_read(&kobj->kref.refcount)) {
+ /* do not error out as sometimes we can recover */
+ printk(KERN_ERR "kobject: reference count is already set, "
+ "something is seriously wrong.\n");
+ dump_stack();
+ }
+
+ kref_init(&kobj->kref);
+ INIT_LIST_HEAD(&kobj->entry);
+ kobj->ktype = ktype;
+ return;
+
+error:
+ printk(KERN_ERR "kobject: %s\n", err_str);
+ dump_stack();
+}
+EXPORT_SYMBOL(kobject_init_ng);
+
+/**
* kobject_rename - change the name of an object
* @kobj: object in question.
* @new_name: object's new name
--
1.5.3.8