From 55f7435c189498ccbfe6a5fba606933587948d85 Mon Sep 17 00:00:00 2001 From: "Luis R. Rodriguez" Date: Mon, 25 Nov 2013 20:56:10 +0100 Subject: [PATCH] cfg80211: DFS check dfs_region before usage Check the DFS region before channel availability check. Signed-off-by: Luis R. Rodriguez Signed-off-by: Janusz Dziedzic Signed-off-by: Johannes Berg --- net/wireless/nl80211.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 93e3356..9cd8c61 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -5651,8 +5651,13 @@ static int nl80211_start_radar_detection(struct sk_buff *skb, struct net_device *dev = info->user_ptr[1]; struct wireless_dev *wdev = dev->ieee80211_ptr; struct cfg80211_chan_def chandef; + enum nl80211_dfs_regions dfs_region; int err; + dfs_region = reg_get_dfs_region(wdev->wiphy); + if (dfs_region == NL80211_DFS_UNSET) + return -EINVAL; + err = nl80211_parse_chandef(rdev, info, &chandef); if (err) return err; -- 2.7.4