diff options
| -rw-r--r-- | include/linux/kobject.h | 2 | ||||
| -rw-r--r-- | lib/kobject.c | 5 |
2 files changed, 6 insertions, 1 deletions
diff --git a/include/linux/kobject.h b/include/linux/kobject.h index e6284591599e..ca85cb80e99a 100644 --- a/include/linux/kobject.h +++ b/include/linux/kobject.h @@ -108,6 +108,8 @@ extern int __must_check kobject_rename(struct kobject *, const char *new_name); extern int __must_check kobject_move(struct kobject *, struct kobject *); extern struct kobject *kobject_get(struct kobject *kobj); +extern struct kobject * __must_check kobject_get_unless_zero( + struct kobject *kobj); extern void kobject_put(struct kobject *kobj); extern const void *kobject_namespace(struct kobject *kobj); diff --git a/lib/kobject.c b/lib/kobject.c index 445dcaeb0f56..763d70a18941 100644 --- a/lib/kobject.c +++ b/lib/kobject.c @@ -601,12 +601,15 @@ struct kobject *kobject_get(struct kobject *kobj) } EXPORT_SYMBOL(kobject_get); -static struct kobject * __must_check kobject_get_unless_zero(struct kobject *kobj) +struct kobject * __must_check kobject_get_unless_zero(struct kobject *kobj) { + if (!kobj) + return NULL; if (!kref_get_unless_zero(&kobj->kref)) kobj = NULL; return kobj; } +EXPORT_SYMBOL(kobject_get_unless_zero); /* * kobject_cleanup - free kobject resources. |