ath9k_common: Move count_streams to common module

This can be used by ath9k_htc.
Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/ath/ath9k/common.c

@@ -397,6 +397,19 @@ void ath9k_cmn_key_delete(struct ath_common *common,
 }
 EXPORT_SYMBOL(ath9k_cmn_key_delete);
 
+int ath9k_cmn_count_streams(unsigned int chainmask, int max)
+{
+	int streams = 0;
+
+	do {
+		if (++streams == max)
+			break;
+	} while ((chainmask = chainmask & (chainmask - 1)));
+
+	return streams;
+}
+EXPORT_SYMBOL(ath9k_cmn_count_streams);
+
 static int __init ath9k_cmn_init(void)
 {
 	return 0;

drivers/net/wireless/ath/ath9k/common.h

@@ -64,3 +64,4 @@ int ath9k_cmn_key_config(struct ath_common *common,
 			 struct ieee80211_key_conf *key);
 void ath9k_cmn_key_delete(struct ath_common *common,
 			  struct ieee80211_key_conf *key);
+int ath9k_cmn_count_streams(unsigned int chainmask, int max);

drivers/net/wireless/ath/ath9k/init.c

@@ -175,18 +175,6 @@ static const struct ath_ops ath9k_common_ops = {
 	.write = ath9k_iowrite32,
 };
 
-static int count_streams(unsigned int chainmask, int max)
-{
-	int streams = 0;
-
-	do {
-		if (++streams == max)
-			break;
-	} while ((chainmask = chainmask & (chainmask - 1)));
-
-	return streams;
-}
-
 /**************************/
 /*     Initialization     */
 /**************************/
@@ -227,8 +215,8 @@ static void setup_ht_cap(struct ath_softc *sc,
 
 	/* set up supported mcs set */
 	memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
-	tx_streams = count_streams(common->tx_chainmask, max_streams);
-	rx_streams = count_streams(common->rx_chainmask, max_streams);
+	tx_streams = ath9k_cmn_count_streams(common->tx_chainmask, max_streams);
+	rx_streams = ath9k_cmn_count_streams(common->rx_chainmask, max_streams);
 
 	ath_print(common, ATH_DBG_CONFIG,
 		  "TX streams %d, RX streams: %d\n",