From 55b183ad8635589ea731a31653de79a2626491c4 Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@openwrt.org>
Date: Fri, 11 Jan 2013 14:22:58 +0100
Subject: [PATCH] wireless: fix regulatory HT40 allowed check

commit 1a9193185f462a51815fe48491f8a6fb6b942551 "regulatory: code cleanup"
changed is_ht40_allowed without considering that IEEE80211_CHAN_NO_HT40 is
not just one flag, but two.
This is causing HT40- to be blocked completely.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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