openwrt-xburst/package/mac80211/patches/310-rt2x00-Fix-MCS-rx_mask-rt2800usb.patch

From d91bfd139f98e60222e7556b696b8caa66f658bb Mon Sep 17 00:00:00 2001
From: Ivo van Doorn <IvDoorn@gmail.com>
Date: Sat, 7 Feb 2009 17:18:34 +0100
Subject: [PATCH] rt2x00: Fix MCS rx_mask (rt2800usb)

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
---
 drivers/net/wireless/rt2x00/rt2800usb.c |   22 ++++++++++++++++++++--
 1 files changed, 20 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/rt2x00/rt2800usb.c b/drivers/net/wireless/rt2x00/rt2800usb.c
index ab00d4d..1709e87 100644
--- a/drivers/net/wireless/rt2x00/rt2800usb.c
+++ b/drivers/net/wireless/rt2x00/rt2800usb.c
@@ -2215,6 +2215,13 @@ static int rt2800usb_validate_eeprom(struct rt2x00_dev *rt2x00dev)
 		rt2x00_set_field16(&word, EEPROM_ANTENNA_RF_TYPE, RF2820);
 		rt2x00_eeprom_write(rt2x00dev, EEPROM_ANTENNA, word);
 		EEPROM(rt2x00dev, "Antenna: 0x%04x\n", word);
+	} else if (rt2x00_rev(&rt2x00dev->chip) < RT2883_VERSION) {
+		/*
+		 * There is a max of 2 RX streams for RT2860 series
+		 */
+		if (rt2x00_get_field16(word, EEPROM_ANTENNA_RXPATH) > 2)
+			rt2x00_set_field16(&word, EEPROM_ANTENNA_RXPATH, 2);
+		rt2x00_eeprom_write(rt2x00dev, EEPROM_ANTENNA, word);
 	}
 
 	rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &word);
@@ -2465,6 +2472,7 @@ static int rt2800usb_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
 	char *tx_power1;
 	char *tx_power2;
 	unsigned int i;
+	u16 eeprom;
 
 	/*
 	 * Initialize all hw fields.
@@ -2481,6 +2489,8 @@ static int rt2800usb_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
 				rt2x00_eeprom_addr(rt2x00dev,
 						   EEPROM_MAC_ADDR_0));
 
+	rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &eeprom);
+
 	/*
 	 * Initialize HT information.
 	 */
@@ -2495,11 +2505,19 @@ static int rt2800usb_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
 	    IEEE80211_HT_CAP_PSMP_SUPPORT;
 	spec->ht.ampdu_factor = 3;
 	spec->ht.ampdu_density = 4;
-	spec->ht.mcs.rx_mask[0] = 0xff;
-	spec->ht.mcs.rx_mask[1] = 0xff;
 	spec->ht.mcs.tx_params =
 	    IEEE80211_HT_MCS_TX_DEFINED;
 
+	switch (rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RXPATH)) {
+	case 3:
+		spec->ht.mcs.rx_mask[2] = 0xff;
+	case 2:
+		spec->ht.mcs.rx_mask[1] = 0xff;
+	case 1:
+		spec->ht.mcs.rx_mask[0] = 0xff;
+		break;
+	}
+
 	/*
 	 * Initialize hw_mode information.
 	 */
-- 
1.6.0