cfg80211: fix crash in cfg80211_set_freq()

Since wdev can be NULL, check it before dereferencing it Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
git-mirror · May 21, 2010 · 9fbc630 · 9fbc630
1 parent b9f2e39
commit 9fbc630
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/net/wireless/chan.c b/net/wireless/chan.c
@@ -50,7 +50,7 @@ int cfg80211_set_freq(struct cfg80211_registered_device *rdev,
 	struct ieee80211_channel *chan;
 	int result;
 
-	if (wdev->iftype == NL80211_IFTYPE_MONITOR)
+	if (wdev && wdev->iftype == NL80211_IFTYPE_MONITOR)
 		wdev = NULL;
 
 	if (wdev) {