rt2x00: rt2800lib: correctly set HT20/HT40 filter

Simple patch to correct HT20/HT40 filter setting.
Tested with Rt3290, Rt3352 and Rt5350

Signed-off-by: Serge Vasilugin <vasilugin@yandex.ru>
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Acked-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/ralink/rt2x00/rt2800.h

@@ -2286,6 +2286,8 @@ struct mac_iveiv_entry {
 #define RFCSR30_RX_H20M			FIELD8(0x04)
 #define RFCSR30_RX_VCM			FIELD8(0x18)
 #define RFCSR30_RF_CALIBRATION		FIELD8(0x80)
+#define RF3322_RFCSR30_TX_H20M		FIELD8(0x01)
+#define RF3322_RFCSR30_RX_H20M		FIELD8(0x02)
 
 /*
  * RFCSR 31:

drivers/net/wireless/ralink/rt2x00/rt2800lib.c

@@ -3220,8 +3220,17 @@ static void rt2800_config_channel(struct rt2x00_dev *rt2x00dev,
 	    rt2x00_rf(rt2x00dev, RF5390) ||
 	    rt2x00_rf(rt2x00dev, RF5392)) {
 		rt2800_rfcsr_read(rt2x00dev, 30, &rfcsr);
-		rt2x00_set_field8(&rfcsr, RFCSR30_TX_H20M, 0);
-		rt2x00_set_field8(&rfcsr, RFCSR30_RX_H20M, 0);
+		if (rt2x00_rf(rt2x00dev, RF3322)) {
+			rt2x00_set_field8(&rfcsr, RF3322_RFCSR30_TX_H20M,
+					  conf_is_ht40(conf));
+			rt2x00_set_field8(&rfcsr, RF3322_RFCSR30_RX_H20M,
+					  conf_is_ht40(conf));
+		} else {
+			rt2x00_set_field8(&rfcsr, RFCSR30_TX_H20M,
+					  conf_is_ht40(conf));
+			rt2x00_set_field8(&rfcsr, RFCSR30_RX_H20M,
+					  conf_is_ht40(conf));
+		}
 		rt2800_rfcsr_write(rt2x00dev, 30, rfcsr);
 
 		rt2800_rfcsr_read(rt2x00dev, 3, &rfcsr);