linux-kernel - Re: [PATCH] staging/wlags49_hs: Fix build error when CONFIG

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Message-ID: <AANLkTikH_CAVo7sblakUfhI-ysIXk2z1KZz0YkjCDL3m@mail.gmail.com>
Date:	Fri, 11 Jun 2010 08:46:01 -0400
From:	Javier Martinez Canillas <martinez.javier@...il.com>
To:	Joe Perches <joe@...ches.com>
Cc:	Greg Kroah-Hartman <gregkh@...e.de>,
	Henk de Groot <pe1dnn@...at.org>,
	linux-kernel@...r.kernel.org, devel@...verdev.osuosl.org,
	kernel-janitors <kernel-janitors@...r.kernel.org>
Subject: Re: [PATCH] staging/wlags49_hs: Fix build error when CONFIG_SYSFS is 
	not set

>>  extern void register_wlags_sysfs(struct net_device *);
>>  extern void unregister_wlags_sysfs(struct net_device *);
>>  #else
>> -static void register_wlags_sysfs(struct net_device *) { return; };
>> -static void unregister_wlags_sysfs(struct net_device *) { return; };
>> +#define register_wlags_sysfs(net_device) { }
>> +#define unregister_wlags_sysfs(net_device) { }
>>  #endif
>
> Yes, that works, but a better fix would be to remove the
> semicolons after the function close braces.
> ---

Why would it be better? With a macro you avoid the overhead of a
function call that does nothing.
I personally think a macro fit better in this case.

Best regards,

-----------------------------------------
Javier Martínez Canillas
+595 981 88 66 58
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