kobject: add kobject_init_ng function

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>

1 files changed, 42 insertions, 0 deletions

diff --git a/lib/kobject.c b/lib/kobject.c
index a152036db006..60586bcc7a71 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