Path for fixed channel issue in aircrack-ng suite

[Joker Joker <jokesareonyou@xxxxxxxxx>]

Below is a patch to fix monitor mode channel issue for aircrack-ng suit
(fixed channel mon0: -1)

diff --git a/net/wireless/chan.c b/net/wireless/chan.c
index d92d088..93f6c19 100644
--- a/net/wireless/chan.c
+++ b/net/wireless/chan.c
@@ -48,6 +48,7 @@ int cfg80211_set_freq(struct cfg80211_registered_device *rdev,
                      enum nl80211_channel_type channel_type)
 {
        struct ieee80211_channel *chan;
+       struct wireless_dev *old_wdev = wdev;
        int result;

        if (wdev->iftype == NL80211_IFTYPE_MONITOR)
@@ -73,8 +74,8 @@ int cfg80211_set_freq(struct cfg80211_registered_device *rdev,
        if (result)
                return result;

-       if (wdev)
-               wdev->channel = chan;
+       wdev = old_wdev;
+       wdev->channel = chan;

        return 0;
 }
--
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