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authorGreg Kroah-Hartman <gregkh@suse.de>2007-11-28 10:46:22 -0800
committerGreg Kroah-Hartman <gregkh@suse.de>2008-01-24 20:40:25 -0800
commitcfb36fff45e3997b8044c81045fc4869ba5f281a (patch)
tree35a58ea81b5864bfd68b8de65c791cf92729b072 /lib
parentd76e15fb20eeb7632ef38876a884fe3508b2c01d (diff)
downloadlinaro-lsk-cfb36fff45e3997b8044c81045fc4869ba5f281a.tar.gz
kobject: grab the kset reference in kobject_add, not kobject_init
kobject_init should not be grabing any references, but only initializing the object. This patch fixes this, and makes the lock hold-time shorter for when a kset is present in the kobject. The current kernel tree has been audited to verify that this change should be safe. Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'lib')
-rw-r--r--lib/kobject.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/lib/kobject.c b/lib/kobject.c
index 7919c32a3a1..4d52b6f534b 100644
--- a/lib/kobject.c
+++ b/lib/kobject.c
@@ -133,7 +133,6 @@ void kobject_init(struct kobject * kobj)
return;
kref_init(&kobj->kref);
INIT_LIST_HEAD(&kobj->entry);
- kobj->kset = kset_get(kobj->kset);
}
@@ -184,7 +183,7 @@ int kobject_add(struct kobject * kobj)
kobj->kset ? kobject_name(&kobj->kset->kobj) : "<NULL>" );
if (kobj->kset) {
- spin_lock(&kobj->kset->list_lock);
+ kobj->kset = kset_get(kobj->kset);
if (!parent) {
parent = kobject_get(&kobj->kset->kobj);
@@ -196,7 +195,8 @@ int kobject_add(struct kobject * kobj)
kobject_get(parent);
}
- list_add_tail(&kobj->entry,&kobj->kset->list);
+ spin_lock(&kobj->kset->list_lock);
+ list_add_tail(&kobj->entry, &kobj->kset->list);
spin_unlock(&kobj->kset->list_lock);
kobj->parent = parent;
}