This is a note to let you know that I've just added the patch titled wcn36xx: Fix HT40 capability for 2Ghz band to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: wcn36xx-fix-ht40-capability-for-2ghz-band.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 960ae77f25631bbe4e3aafefe209b52e044baf31 Mon Sep 17 00:00:00 2001 From: Loic Poulain <loic.poulain@xxxxxxxxxx> Date: Wed, 20 Oct 2021 15:38:53 +0200 Subject: wcn36xx: Fix HT40 capability for 2Ghz band From: Loic Poulain <loic.poulain@xxxxxxxxxx> commit 960ae77f25631bbe4e3aafefe209b52e044baf31 upstream. All wcn36xx controllers are supposed to support HT40 (and SGI40), This doubles the maximum bitrate/throughput with compatible APs. Tested with wcn3620 & wcn3680B. Cc: stable@xxxxxxxxxxxxxxx Fixes: 8e84c2582169 ("wcn36xx: mac80211 driver for Qualcomm WCN3660/WCN3680 hardware") Signed-off-by: Loic Poulain <loic.poulain@xxxxxxxxxx> Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxxxxxx> Link: https://lore.kernel.org/r/1634737133-22336-1-git-send-email-loic.poulain@xxxxxxxxxx Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/net/wireless/ath/wcn36xx/main.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- a/drivers/net/wireless/ath/wcn36xx/main.c +++ b/drivers/net/wireless/ath/wcn36xx/main.c @@ -129,7 +129,9 @@ static struct ieee80211_supported_band w .cap = IEEE80211_HT_CAP_GRN_FLD | IEEE80211_HT_CAP_SGI_20 | IEEE80211_HT_CAP_DSSSCCK40 | - IEEE80211_HT_CAP_LSIG_TXOP_PROT, + IEEE80211_HT_CAP_LSIG_TXOP_PROT | + IEEE80211_HT_CAP_SGI_40 | + IEEE80211_HT_CAP_SUP_WIDTH_20_40, .ht_supported = true, .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K, .ampdu_density = IEEE80211_HT_MPDU_DENSITY_16, Patches currently in stable-queue which might be from loic.poulain@xxxxxxxxxx are queue-4.9/wcn36xx-fix-ht40-capability-for-2ghz-band.patch queue-4.9/wcn36xx-handle-connection-loss-indication.patch