[PATCH rtw-next 4/5] wifi: rtl8xxxu: Fix RX channel width reported by RTL8192FU

[Bitterblue Smith <rtl8821cerfe2@gmail.com>]

The other chips report the RX channel width in the RX descriptor,
but this one doesn't.

Get the RX channel width from the PHY status.

Signed-off-by: Bitterblue Smith <rtl8821cerfe2@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 739456640ca8..668018229f7c 100644
--- a/drivers/net/wireless/realtek/rtl8xxxu/core.c
+++ b/drivers/net/wireless/realtek/rtl8xxxu/core.c
@@ -5701,7 +5701,7 @@ static void jaguar2_rx_parse_phystats_type1(struct rtl8xxxu_priv *priv,
 			 !rtl8xxxu_is_sta_sta(priv) &&
 			 (rtl8xxxu_is_packet_match_bssid(priv, hdr, 0) ||
 			  rtl8xxxu_is_packet_match_bssid(priv, hdr, 1));
-	u8 pwdb_max = 0;
+	u8 pwdb_max = 0, rxsc;
 	int rx_path;
 
 	if (parse_cfo) {
@@ -5716,6 +5716,16 @@ static void jaguar2_rx_parse_phystats_type1(struct rtl8xxxu_priv *priv,
 		pwdb_max = max(pwdb_max, phy_stats1->pwdb[rx_path]);
 
 	rx_status->signal = pwdb_max - 110;
+
+	if (rxmcs > DESC_RATE_11M && rxmcs < DESC_RATE_MCS0)
+		rxsc = phy_stats1->l_rxsc;
+	else
+		rxsc = phy_stats1->ht_rxsc;
+
+	if (phy_stats1->rf_mode == 0 || rxsc == 1 || rxsc == 2)
+		rx_status->bw = RATE_INFO_BW_20;
+	else
+		rx_status->bw = RATE_INFO_BW_40;
 }
 
 static void jaguar2_rx_parse_phystats_type2(struct rtl8xxxu_priv *priv,
-- 
2.51.1