linux-kernel - [PATCH AUTOSEL 6.12 091/486] wifi: mwifiex: Fix HT40 bandwidth issue.

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Message-Id: <20250505223922.2682012-91-sashal@kernel.org>
Date: Mon,  5 May 2025 18:32:47 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: Jeff Chen <jeff.chen_1@....com>,
	Francesco Dolcini <francesco.dolcini@...adex.com>,
	Johannes Berg <johannes.berg@...el.com>,
	Sasha Levin <sashal@...nel.org>,
	briannorris@...omium.org,
	kvalo@...nel.org,
	s.hauer@...gutronix.de,
	linux-wireless@...r.kernel.org
Subject: [PATCH AUTOSEL 6.12 091/486] wifi: mwifiex: Fix HT40 bandwidth issue.

From: Jeff Chen <jeff.chen_1@....com>

[ Upstream commit 4fcfcbe457349267fe048524078e8970807c1a5b ]

This patch addresses an issue where, despite the AP supporting 40MHz
bandwidth, the connection was limited to 20MHz. Without this fix,
even if the access point supports 40MHz, the bandwidth after
connection remains at 20MHz. This issue is not a regression.

Signed-off-by: Jeff Chen <jeff.chen_1@....com>
Reviewed-by: Francesco Dolcini <francesco.dolcini@...adex.com>
Link: https://patch.msgid.link/20250314094238.2097341-1-jeff.chen_1@nxp.com
Signed-off-by: Johannes Berg <johannes.berg@...el.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/net/wireless/marvell/mwifiex/11n.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/marvell/mwifiex/11n.c b/drivers/net/wireless/marvell/mwifiex/11n.c
index 66f0f5377ac18..738bafc3749b0 100644
--- a/drivers/net/wireless/marvell/mwifiex/11n.c
+++ b/drivers/net/wireless/marvell/mwifiex/11n.c
@@ -403,12 +403,14 @@ mwifiex_cmd_append_11n_tlv(struct mwifiex_private *priv,
 
 		if (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
 		    bss_desc->bcn_ht_oper->ht_param &
-		    IEEE80211_HT_PARAM_CHAN_WIDTH_ANY)
+		    IEEE80211_HT_PARAM_CHAN_WIDTH_ANY) {
+			chan_list->chan_scan_param[0].radio_type |=
+				CHAN_BW_40MHZ << 2;
 			SET_SECONDARYCHAN(chan_list->chan_scan_param[0].
 					  radio_type,
 					  (bss_desc->bcn_ht_oper->ht_param &
 					  IEEE80211_HT_PARAM_CHA_SEC_OFFSET));
-
+		}
 		*buffer += struct_size(chan_list, chan_scan_param, 1);
 		ret_len += struct_size(chan_list, chan_scan_param, 1);
 	}
-- 
2.39.5