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Subject[PATCH 4.4 127/312] mac80211: TDLS: always downgrade invalid chandefs
Date
From: Arik Nemtsov <arik@wizery.com>

commit db8d99774c2682559b7648857697b9b588c6795a upstream.

Even if the current chandef width is equal to the station's max-BW, it
doesn't mean it's a valid width for TDLS. Make sure to always check
regulatory constraints in these cases.

Fixes: 0fabfaafec3a ("mac80211: upgrade BW of TDLS peers when possible")
Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
net/mac80211/tdls.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/mac80211/tdls.c
+++ b/net/mac80211/tdls.c
@@ -332,7 +332,7 @@ ieee80211_tdls_chandef_vht_upgrade(struc
return;

/* proceed to downgrade the chandef until usable or the same */
- while (uc.width > max_width &&
+ while (uc.width > max_width ||
!cfg80211_reg_can_beacon_relax(sdata->local->hw.wiphy, &uc,
sdata->wdev.iftype))
ieee80211_chandef_downgrade(&uc);

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