linux-kernel - [PATCH 5.8 55/99] cfg80211: fix 6 GHz channel conversion

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Message-Id: <20200929105932.431479822@linuxfoundation.org>
Date:   Tue, 29 Sep 2020 13:01:38 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Amar <asinghal@...eaurora.org>,
        Johannes Berg <johannes.berg@...el.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.8 55/99] cfg80211: fix 6 GHz channel conversion

From: Johannes Berg <johannes.berg@...el.com>

[ Upstream commit c0de8776af6543e10d1a5c8969679fd9f6b66fa9 ]

We shouldn't accept any channels bigger than 233, fix that.

Reported-by: Amar <asinghal@...eaurora.org>
Fixes: d1a1646c0de7 ("cfg80211: adapt to new channelization of the 6GHz band")
Signed-off-by: Johannes Berg <johannes.berg@...el.com>
Link: https://lore.kernel.org/r/20200917115222.312ba6f1d461.I3a8c8fbcc3cc019814fd9cd0aced7eb591626136@changeid
Signed-off-by: Johannes Berg <johannes.berg@...el.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 net/wireless/util.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/wireless/util.c b/net/wireless/util.c
index a72d2ad6ade8b..0f95844e73d80 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -95,7 +95,7 @@ u32 ieee80211_channel_to_freq_khz(int chan, enum nl80211_band band)
 		/* see 802.11ax D6.1 27.3.23.2 */
 		if (chan == 2)
 			return MHZ_TO_KHZ(5935);
-		if (chan <= 253)
+		if (chan <= 233)
 			return MHZ_TO_KHZ(5950 + chan * 5);
 		break;
 	case NL80211_BAND_60GHZ:
-- 
2.25.1