[PATCH] Don't reference NULL klist pointer in klist_remove().
Signed-off-by: Patrick Mochel <mochel@digitalimplant.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff -Nru a/lib/klist.c b/lib/klist.c
diff --git a/lib/klist.c b/lib/klist.c
index 02177d7..738ab81 100644
--- a/lib/klist.c
+++ b/lib/klist.c
@@ -145,9 +145,10 @@
void klist_remove(struct klist_node * n)
{
- spin_lock(&n->n_klist->k_lock);
+ struct klist * k = n->n_klist;
+ spin_lock(&k->k_lock);
klist_dec_and_del(n);
- spin_unlock(&n->n_klist->k_lock);
+ spin_unlock(&k->k_lock);
wait_for_completion(&n->n_removed);
}