From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from sabertooth02.qualcomm.com ([65.197.215.38]:42120 "EHLO sabertooth02.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S935319AbcIFTBe (ORCPT ); Tue, 6 Sep 2016 15:01:34 -0400 From: Thomas Pedersen To: linux-wireless CC: Johannes Berg , Thomas Pedersen Subject: [PATCH] cfg80211: cap 20MHz VHT bitrate at MCS 8 Date: Tue, 6 Sep 2016 12:00:17 -0700 Message-ID: <1473188417-13987-1-git-send-email-twp@qca.qualcomm.com> (sfid-20160906_210455_004286_9495AEAB) MIME-Version: 1.0 Content-Type: text/plain Sender: linux-wireless-owner@vger.kernel.org List-ID: Some drivers (ath10k) report MCS 9 @ 20MHz, which technically isn't allowed. To get more meaningful value than 0 out of this however, just cap the bitrate for 20MHz to MCS 8. Signed-off-by: Thomas Pedersen --- net/wireless/util.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/net/wireless/util.c b/net/wireless/util.c index 0675f51..5fb0249 100644 --- a/net/wireless/util.c +++ b/net/wireless/util.c @@ -1157,7 +1157,9 @@ static u32 cfg80211_calculate_bitrate_vht(struct rate_info *rate) 58500000, 65000000, 78000000, - 0, + /* some drivers report MCS 9 for 20MHz anyway. Clip to MCS 8 + * bitrate as it's closer than 0 */ + 78000000, }, { 13500000, 27000000, -- 2.1.4