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-rw-r--r--fs/ubifs/tnc.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/ubifs/tnc.c b/fs/ubifs/tnc.c
index 1bba4c8b5d3d..74ae2de949df 100644
--- a/fs/ubifs/tnc.c
+++ b/fs/ubifs/tnc.c
@@ -1930,6 +1930,9 @@ int ubifs_tnc_lookup_dh(struct ubifs_info *c, const union ubifs_key *key,
int err;
const struct ubifs_dent_node *dent = node;
+ if (!c->double_hash)
+ return -EOPNOTSUPP;
+
/*
* We assume that in most of the cases there are no name collisions and
* 'ubifs_tnc_lookup()' returns us the right direntry.