1 files changed, 3 insertions, 0 deletions

diff --git a/net/wireless/ocb.c b/net/wireless/ocb.c
index c00d4a792319..e64dbf16330c 100644
--- a/net/wireless/ocb.c
+++ b/net/wireless/ocb.c
@@ -29,6 +29,9 @@ int __cfg80211_join_ocb(struct cfg80211_registered_device *rdev,
         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
                 return -EOPNOTSUPP;
 
+        if (!rdev->ops->join_ocb)
+                return -EOPNOTSUPP;
+
         if (WARN_ON(!setup->chandef.chan))
                 return -EINVAL;