wlcore: flush tx on CHANGE_CHANNEL

On CHANGE_CHANNEL indication, we should flush all the
queued tx frames, so they will be sent on the correct
(current) channel.

Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>

drivers/net/wireless/ti/wlcore/main.c

@@ -2557,8 +2557,9 @@ static int wl1271_op_config(struct ieee80211_hw *hw, u32 changed)
 	 * frames, such as the deauth. To make sure those frames reach the air,
 	 * wait here until the TX queue is fully flushed.
 	 */
-	if ((changed & IEEE80211_CONF_CHANGE_IDLE) &&
-	    (conf->flags & IEEE80211_CONF_IDLE))
+	if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) ||
+	    ((changed & IEEE80211_CONF_CHANGE_IDLE) &&
+	     (conf->flags & IEEE80211_CONF_IDLE)))
 		wl1271_tx_flush(wl);
 
 	mutex_lock(&wl->mutex);