From bdb4c850c368d4009a0b109b6135042540aca749 Mon Sep 17 00:00:00 2001 From: Bitterblue Smith Date: Thu, 20 Nov 2025 16:11:58 +0200 Subject: [PATCH] wifi: rtl8xxxu: Make RTL8192CU, RTL8723AU TX with 40 MHz width Set the required fields in the TX descriptor to allow these chips to transmit with 40 MHz channel width when the access point supports it. Tested only with RTL8192CU, but these settings are identical for RTL8723AU. Signed-off-by: Bitterblue Smith Reviewed-by: Ping-Ke Shih Signed-off-by: Ping-Ke Shih Link: https://patch.msgid.link/30d95228-69b2-48f9-8854-c98d2408c4d3@gmail.com --- drivers/net/wireless/realtek/rtl8xxxu/core.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/realtek/rtl8xxxu/core.c b/drivers/net/wireless/realtek/rtl8xxxu/core.c index be8ee6c300341..7700e4074dc39 100644 --- a/drivers/net/wireless/realtek/rtl8xxxu/core.c +++ b/drivers/net/wireless/realtek/rtl8xxxu/core.c @@ -5221,9 +5221,19 @@ rtl8xxxu_fill_txdesc_v1(struct ieee80211_hw *hw, struct ieee80211_hdr *hdr, tx_desc->txdw5 |= cpu_to_le32(TXDESC32_RETRY_LIMIT_ENABLE); } - if (ieee80211_is_data_qos(hdr->frame_control)) + if (ieee80211_is_data_qos(hdr->frame_control)) { tx_desc->txdw4 |= cpu_to_le32(TXDESC32_QOS); + if (conf_is_ht40(&hw->conf)) { + tx_desc->txdw4 |= cpu_to_le32(TXDESC_DATA_BW); + + if (conf_is_ht40_minus(&hw->conf)) + tx_desc->txdw4 |= cpu_to_le32(TXDESC_PRIME_CH_OFF_UPPER); + else + tx_desc->txdw4 |= cpu_to_le32(TXDESC_PRIME_CH_OFF_LOWER); + } + } + if (short_preamble) tx_desc->txdw4 |= cpu_to_le32(TXDESC32_SHORT_PREAMBLE); -- 2.47.3