Documentation: mmc: add mmc-hs400-enhanced-strobe

[firefly-linux-kernel-4.4.55.git] / lib / klist.c

diff --git a/lib/klist.c b/lib/klist.c
index d74cf7a29afdb043112fee5c9ad7b37a631a9985..0507fa5d84c534917d0842a453bdbcaba386422a 100644 (file)
--- a/lib/klist.c
+++ b/lib/klist.c
@@ -282,9 +282,9 @@ void klist_iter_init_node(struct klist *k, struct klist_iter *i,
                          struct klist_node *n)
 {
        i->i_klist = k;
-       i->i_cur = n;
-       if (n)
-               kref_get(&n->n_ref);
+       i->i_cur = NULL;
+       if (n && kref_get_unless_zero(&n->n_ref))
+               i->i_cur = n;
 }
 EXPORT_SYMBOL_GPL(klist_iter_init_node);