linux-kernel - Re: [PATCH] Avoid Wunused-but-set warning

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Date:	Sun, 10 Jul 2011 11:02:41 -0700
From:	Randy Dunlap <rdunlap@...otime.net>
To:	Arnaud Lacombe <lacombar@...il.com>
Cc:	Pekka Enberg <penberg@...nel.org>,
	Américo Wang <xiyou.wangcong@...il.com>,
	Raghavendra D Prabhu <rprabhu@...hang.net>,
	linux-kbuild@...r.kernel.org, Nir Tzachar <nir.tzachar@...il.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Avoid Wunused-but-set warning

On Sun, 10 Jul 2011 12:49:20 -0400 Arnaud Lacombe wrote:

> Hi,
> 
> On Sun, Jul 10, 2011 at 12:28 PM, Pekka Enberg <penberg@...nel.org> wrote:
> > On Sun, Jul 10, 2011 at 7:24 PM, Arnaud Lacombe <lacombar@...il.com> wrote:
> >> Hi,
> >>
> >> On Sun, Jul 10, 2011 at 12:16 PM, Américo Wang <xiyou.wangcong@...il.com> wrote:
> >>> On Sun, Jul 10, 2011 at 12:24 AM, Raghavendra D Prabhu
> >>> <rprabhu@...hang.net> wrote:
> >>>> Hi,
> >>>>    I am seeing Wunused-but-set warning while make nconfig.  Looks like
> >>>>    active_menu is not used. Removing it fixes the warning.
> >>>>
> >>>> Signed-off-by: Raghavendra D Prabhu <rprabhu@...hang.net>
> >>>
> >>> Acked-by: WANG Cong <xiyou.wangcong@...il.com>
> >>>
> >> Out of curiosity, what is your status to ACK such patch ?
> >
> > What kind of status do you need to ACK such a simple patch?
> >
> As per Documentation/SubmittingPatches:
> 
> <<
> 13) When to use Acked-by: and Cc:
> The Signed-off-by: tag indicates that the signer was involved in the
> development of the patch, or that he/she was in the patch's delivery path.
> 
> If a person was not directly involved in the preparation or handling of a
> patch but wishes to signify and record their approval of it then they can
> arrange to have an Acked-by: line added to the patch's changelog.
> 
> Acked-by: is often used by the maintainer of the affected code when that
> maintainer neither contributed to nor forwarded the patch.
> >>
> 
> That said, it is not a strong requirement... unfortunately. So, let's
> have some fun and go ACK thousand of trivial patch just to generate
> traffic on the LKML and give myself self-importance :-)

Acked-by: is mostly used as a weak version of Reviewed-by:
and the "definition" in SubmittingPatches is not accurate IMO.
I.e., it can be used by anyone.

---
~Randy
*** Remember to use Documentation/SubmitChecklist when testing your code ***
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