netdev - Re: [PATCH 3/8] brcm80211: Add and use brcmX_dbg_dump

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Date:	Sun, 15 Jan 2012 10:17:56 +0100
From:	"Arend van Spriel" <arend@...adcom.com>
To:	"Joe Perches" <joe@...ches.com>
cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"Brett Rudley" <brudley@...adcom.com>,
	"Henry Ptasinski" <henryp@...adcom.com>,
	"Roland Vossen" <rvossen@...adcom.com>,
	"Franky (Zhenhui) Lin" <frankyl@...adcom.com>,
	"Kan Yan" <kanyan@...adcom.com>,
	"John W. Linville" <linville@...driver.com>,
	"linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [PATCH 3/8] brcm80211: Add and use brcmX_dbg_dump_hex

On 01/15/2012 09:38 AM, Joe Perches wrote:

> +#ifdef DEBUG
> +extern __printf(3, 4)

Just curious if I can learn something here. What does the __printf(3, 4) do?

> +void brcmu_dbg_hex_dump(const void *data, size_t size, const char *fmt, ...);
> +#else
> +__printf(3, 4)
> +static inline
> +void brcmu_dbg_hex_dump(const void *data, size_t size, const char *fmt, ...)
> +{
> +}
> +#endif
> +
>  #endif				/* _BRCMU_UTILS_H_ */

Gr. AvS

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