rt2x00: Fix HT40 operation in rt2800.

Closer inspection of the legacy Ralink driver reveals that in case of HT40+
or HT40- we must adjust the frequency settings that we program to the device.
Implement the same adjustment in the rt2x00 code.

With this HT40 seems to work for all devices supported by rt2800pci and
rt2800usb.

Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/drivers/net/wireless/rt2x00/rt2x00lib.h b/drivers/net/wireless/rt2x00/rt2x00lib.h
index 822affc9b4ca..ed27de1de57b 100644
--- a/drivers/net/wireless/rt2x00/rt2x00lib.h
+++ b/drivers/net/wireless/rt2x00/rt2x00lib.h
@@ -367,12 +367,21 @@ static inline void rt2x00crypto_rx_insert_iv(struct sk_buff *skb,
 void rt2x00ht_create_tx_descriptor(struct queue_entry *entry,
                                    struct txentry_desc *txdesc,
                                    const struct rt2x00_rate *hwrate);
+
+u16 rt2x00ht_center_channel(struct rt2x00_dev *rt2x00dev,
+                            struct ieee80211_conf *conf);
 #else
 static inline void rt2x00ht_create_tx_descriptor(struct queue_entry *entry,
                                                  struct txentry_desc *txdesc,
                                                  const struct rt2x00_rate *hwrate)
 {
 }
+
+static inline u16 rt2x00ht_center_channel(struct rt2x00_dev *rt2x00dev,
+                                          struct ieee80211_conf *conf)
+{
+        return conf->channel->hw_value;
+}
 #endif /* CONFIG_RT2X00_LIB_HT */
 
 /*