mac80211: make CALL_TXH a statement

The multi-line code in this macro wasn't wrapped
in do {} while (0) so we cannot use it in an if()
branch safely in the future -- fix that.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index 844609c23268ba83f90d1184dda65f4d94300609..c7dc8ccff5b2e604909140c8b3c4beca2ccd5507 100644 (file)
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -1200,23 +1200,25 @@ static int invoke_tx_handlers(struct ieee80211_tx_data *tx)
        struct sk_buff *skb = tx->skb;
        ieee80211_tx_result res = TX_DROP;
 
-#define CALL_TXH(txh)          \
-       res = txh(tx);          \
-       if (res != TX_CONTINUE) \
-               goto txh_done;
-
-       CALL_TXH(ieee80211_tx_h_check_assoc)
-       CALL_TXH(ieee80211_tx_h_ps_buf)
-       CALL_TXH(ieee80211_tx_h_select_key)
-       CALL_TXH(ieee80211_tx_h_michael_mic_add)
-       CALL_TXH(ieee80211_tx_h_rate_ctrl)
-       CALL_TXH(ieee80211_tx_h_misc)
-       CALL_TXH(ieee80211_tx_h_sequence)
-       CALL_TXH(ieee80211_tx_h_fragment)
+#define CALL_TXH(txh) \
+       do {                            \
+               res = txh(tx);          \
+               if (res != TX_CONTINUE) \
+                       goto txh_done;  \
+       } while (0)
+
+       CALL_TXH(ieee80211_tx_h_check_assoc);
+       CALL_TXH(ieee80211_tx_h_ps_buf);
+       CALL_TXH(ieee80211_tx_h_select_key);
+       CALL_TXH(ieee80211_tx_h_michael_mic_add);
+       CALL_TXH(ieee80211_tx_h_rate_ctrl);
+       CALL_TXH(ieee80211_tx_h_misc);
+       CALL_TXH(ieee80211_tx_h_sequence);
+       CALL_TXH(ieee80211_tx_h_fragment);
        /* handlers after fragment must be aware of tx info fragmentation! */
-       CALL_TXH(ieee80211_tx_h_stats)
-       CALL_TXH(ieee80211_tx_h_encrypt)
-       CALL_TXH(ieee80211_tx_h_calculate_duration)
+       CALL_TXH(ieee80211_tx_h_stats);
+       CALL_TXH(ieee80211_tx_h_encrypt);
+       CALL_TXH(ieee80211_tx_h_calculate_duration);
 #undef CALL_TXH
 
  txh_done: