[PATCH 2/4] cfg80211: Take the BW restrictions into account when checking the channel

[Rostislav Lisovy]

Since there are frequency bands restricting maximum channel
bandwidth to 5MHz or 10MHz, check the particular bandwidth
flags in cfg80211_chandef_usable() to comply with the restrictions.

Signed-off-by: Rostislav Lisovy <rostislav.lisovy@xxxxxxxxxxx>
---
 net/wireless/chan.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/wireless/chan.c b/net/wireless/chan.c
index 78559b5..87e1576 100644
--- a/net/wireless/chan.c
+++ b/net/wireless/chan.c
@@ -531,12 +531,14 @@ bool cfg80211_chandef_usable(struct wiphy *wiphy,
 		width = 5;
 		break;
 	case NL80211_CHAN_WIDTH_10:
+		prohibited_flags |= IEEE80211_CHAN_NO_10MHZ;
 		width = 10;
 		break;
 	case NL80211_CHAN_WIDTH_20:
 		if (!ht_cap->ht_supported)
 			return false;
 	case NL80211_CHAN_WIDTH_20_NOHT:
+		prohibited_flags |= IEEE80211_CHAN_NO_20MHZ;
 		width = 20;
 		break;
 	case NL80211_CHAN_WIDTH_40:
-- 
1.9.1

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