wl1271: Disable host TX rate control

Disable host TX rate control. The wl1271 firmware is already managing rate
control, so this eliminate unnecessary host processing.

Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Reviewed-by: Teemu Paasikivi <ext-teemu.3.paasikivi@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/wl12xx/wl1271_main.c

@@ -1973,7 +1973,8 @@ int wl1271_init_ieee80211(struct wl1271 *wl)
 	wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
 		IEEE80211_HW_NOISE_DBM |
 		IEEE80211_HW_BEACON_FILTER |
-		IEEE80211_HW_SUPPORTS_PS;
+		IEEE80211_HW_SUPPORTS_PS |
+		IEEE80211_HW_HAS_RATE_CONTROL;
 
 	wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
 		BIT(NL80211_IFTYPE_ADHOC);

drivers/net/wireless/wl12xx/wl1271_tx.c

@@ -350,6 +350,8 @@ static void wl1271_tx_complete_packet(struct wl1271 *wl,
 		     result->id, skb, result->ack_failures,
 		     result->rate_class_index, result->status);
 
+	/* FIXME: do we need to tell the stack about the used rate? */
+
 	/* return the packet to the stack */
 	ieee80211_tx_status(wl->hw, skb);
 	wl->tx_frames[result->id] = NULL;