[PATCH wireless-next v3 2/3] wifi: cfg80211: restrict cfg80211_chandef_create() to only HT-based bands

[Lachlan Hodges <lachlan.hodges@morsemicro.com>]

cfg80211_chandef_create() should only be used by bands that are
HT-based and the chantype argument makes sense. Insert a WARN such
that it isn't used on 60GHz and S1GHz bands and to catch any
potential existing uses by those bands.

Suggested-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Lachlan Hodges <lachlan.hodges@morsemicro.com>
---
 net/wireless/chan.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/net/wireless/chan.c b/net/wireless/chan.c
index 68221b1ab45e..4d2c2b9f1eed 100644
--- a/net/wireless/chan.c
+++ b/net/wireless/chan.c
@@ -29,9 +29,11 @@ void cfg80211_chandef_create(struct cfg80211_chan_def *chandef,
 
 	*chandef = (struct cfg80211_chan_def) {
 		.chan = chan,
-		.freq1_offset = chan->freq_offset,
 	};
 
+	WARN_ON(chan->band == NL80211_BAND_60GHZ ||
+		chan->band == NL80211_BAND_S1GHZ);
+
 	switch (chan_type) {
 	case NL80211_CHAN_NO_HT:
 		chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
-- 
2.43.0