ath: fix build break with ATH_DBG_WARN_ON_ONCE
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>
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@ -272,7 +272,10 @@ ath_dbg(struct ath_common *common, enum ATH_DEBUG dbg_mask,
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return 0;
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}
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#define ATH_DBG_WARN(foo, arg...) do {} while (0)
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#define ATH_DBG_WARN_ON_ONCE(foo) do {} while (0)
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#define ATH_DBG_WARN_ON_ONCE(foo) ({ \
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int __ret_warn_once = !!(foo); \
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unlikely(__ret_warn_once); \
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})
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#endif /* CONFIG_ATH_DEBUG */
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