cfg80211: "fix" 11d oops

This "fixes" the 11d oops I was seeing. This needs some more work but I
cannot work on it now.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index 9e5a9f975478..4f877535e666 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -989,6 +989,9 @@ void regulatory_hint_11d(struct wiphy *wiphy,
         u32 checksum = 0;
         enum environment_cap env = ENVIRON_ANY;
 
+        if (!last_request)
+                return;
+
         mutex_lock(&cfg80211_drv_mutex);
 
         /* IE len must be evenly divisible by 2 */