diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/klist.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/lib/klist.c b/lib/klist.c index 0874e41609a6..a2741a7d9784 100644 --- a/lib/klist.c +++ b/lib/klist.c @@ -278,13 +278,19 @@ EXPORT_SYMBOL_GPL(klist_node_attached); * Similar to klist_iter_init(), but starts the action off with @n, * instead of with the list head. */ -void klist_iter_init_node(struct klist *k, struct klist_iter *i, - struct klist_node *n) +int klist_iter_init_node(struct klist *k, struct klist_iter *i, + struct klist_node *n) { + if (n) { + kref_get(&n->n_ref); + if (!n->n_klist) { + kref_put(&n->n_ref); + return -ENODEV; + } + } i->i_klist = k; i->i_cur = n; - if (n) - kref_get(&n->n_ref); + return 0; } EXPORT_SYMBOL_GPL(klist_iter_init_node); |