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>

1 files changed, 18 insertions, 16 deletions

diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index 844609c23268..c7dc8ccff5b2 100644
--- 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: