Description by Hauke:
"If CONFIG_ATH_DEBUG=y is set ATH_DBG_WARN_ON_ONCE uses WARN_ON_ONCE and
returns something, but if CONFIG_ATH_DEBUG is not set it does not return
anything. Now ATH_DBG_WARN_ON_ONCE is used in the boolean expression in
an if case and is not returning anything and causes a compile error.
CC [M] /drivers/net/wireless/ath/ath9k/main.o
/drivers/net/wireless/ath/ath9k/main.c: In function âath_isrâ:
/drivers/net/wireless/ath/ath9k/main.c:769: error: expected expression
before âdoâ
make[5]: *** [/drivers/net/wireless/ath/ath9k/main.o] Error 1
make[4]: *** [/drivers/net/wireless/ath/ath9k] Error 2"
Reported-by: Hauke Mehrtens <hauke@xxxxxxxxxx>
Signed-off-by: John W. Linville <linville@xxxxxxxxxxxxx>
---
drivers/net/wireless/ath/ath.h | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/net/wireless/ath/ath.h b/drivers/net/wireless/ath/ath.h
index 3eb95e2..45d4d91 100644
--- a/drivers/net/wireless/ath/ath.h
+++ b/drivers/net/wireless/ath/ath.h
@@ -272,7 +272,7 @@ ath_dbg(struct ath_common *common, enum ATH_DEBUG dbg_mask,
return 0;
}
#define ATH_DBG_WARN(foo, arg...) do {} while (0)
-#define ATH_DBG_WARN_ON_ONCE(foo) do {} while (0)
+#define ATH_DBG_WARN_ON_ONCE(foo) ({ 0; })
#endif /* CONFIG_ATH_DEBUG */
--
1.7.3.2
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