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Revert "wifi: mwifiex: Fix HT40 bandwidth issue."

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commit 570896604f47d44d4ff6882d2a588428d2a6ef17 upstream.

This reverts commit 4fcfcbe45734 ("wifi: mwifiex: Fix HT40 bandwidth
issue.")

That commit introduces a regression, when HT40 mode is enabled,
received packets are lost, this was experience with W8997 with both
SDIO-UART and SDIO-SDIO variants. From an initial investigation the
issue solves on its own after some time, but it's not clear what is
the reason. Given that this was just a performance optimization, let's
revert it till we have a better understanding of the issue and a proper
fix.

Cc: Jeff Chen <jeff.chen_1@nxp.com>
Cc: stable@vger.kernel.org
Fixes: 4fcfcbe45734 ("wifi: mwifiex: Fix HT40 bandwidth issue.")
Closes: https://lore.kernel.org/all/20250603203337.GA109929@francesco-nb/
Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Link: https://patch.msgid.link/20250605130302.55555-1-francesco@dolcini.it
[fix commit reference format]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Francesco Dolcini
2025-06-05 15:03:02 +02:00
committed by Greg Kroah-Hartman
parent 1ed18c90f6
commit 81515a4479
1 changed files with 2 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/net/wireless/marvell/mwifiex/11n.c
+2 -4
View File
@@ -403,14 +403,12 @@ mwifiex_cmd_append_11n_tlv(struct mwifiex_private *priv,
if (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 && if (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
bss_desc->bcn_ht_oper->ht_param & 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]. SET_SECONDARYCHAN(chan_list->chan_scan_param[0].
radio_type, radio_type,
(bss_desc->bcn_ht_oper->ht_param & (bss_desc->bcn_ht_oper->ht_param &
IEEE80211_HT_PARAM_CHA_SEC_OFFSET)); IEEE80211_HT_PARAM_CHA_SEC_OFFSET));
}
*buffer += struct_size(chan_list, chan_scan_param, 1); *buffer += struct_size(chan_list, chan_scan_param, 1);
ret_len += struct_size(chan_list, chan_scan_param, 1); ret_len += struct_size(chan_list, chan_scan_param, 1);
} }