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ath: fix build break with ATH_DBG_WARN_ON_ONCE

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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 ‘ath_isr’:
/drivers/net/wireless/ath/ath9k/main.c:769: error: expected expression
before ‘do’
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@hauke-m.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
John W. Linville 2010-12-09 09:08:47 -05:00
parent b7ee1d01c5
commit b7613370db
1 changed files with 4 additions and 1 deletions
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5
drivers/net/wireless/ath/ath.h
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@ -272,7 +272,10 @@ 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) ({ \
int __ret_warn_once = !!(foo); \
unlikely(__ret_warn_once); \
})
#endif /* CONFIG_ATH_DEBUG */