netdev - Re: [PATCH] net/8021q/vlan_dev.c

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Date:	Mon, 18 Feb 2008 19:23:32 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	joe@...ches.com
Cc:	kaber@...sh.net, bruno@...nktube.com, netdev@...r.kernel.org,
	jgarzik@...ox.com, linux-wireless@...r.kernel.org,
	linville@...driver.com
Subject: Re: [PATCH] net/8021q/vlan_dev.c - Use print_mac

From: Joe Perches <joe@...ches.com>
Date: Mon, 18 Feb 2008 17:03:32 -0800

> Does this need to be done for all function calls
> declared with __attribute__((format(printf, x, y)))
> {
> return 0;
> }
> 
> ie: pr_debug, dev_dbg, dev_vdbg?

No, I don't think so.

We're adding the tag to teach the compiler that if the
return value isn't used, it is OK not to emit the call
altogether.
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