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cfg80211: DFS check dfs_region before usage 

Check the DFS region before channel availability check.

Signed-off-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Luis R. Rodriguez 2013-11-25 20:56:10 +01:00 committed by Johannes Berg
parent 6c474799dc
commit 55f7435c18
1 changed files with 5 additions and 0 deletions
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5
net/wireless/nl80211.c
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@ -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;