linux-kernel - Re: [PATCH 5/5] staging: lustre: osc: drop trivially useless initialization

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Message-ID: <alpine.DEB.2.02.1506210249180.2231@localhost6.localdomain6>
Date:	Sun, 21 Jun 2015 02:49:34 +0200 (CEST)
From:	Julia Lawall <julia.lawall@...6.fr>
To:	Joachim Eastwood <manabian@...il.com>
cc:	Julia Lawall <Julia.Lawall@...6.fr>,
	Oleg Drokin <oleg.drokin@...el.com>,
	kernel-janitors@...r.kernel.org,
	Andreas Dilger <andreas.dilger@...el.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	HPDD-discuss@...1.01.org, devel@...verdev.osuosl.org,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 5/5] staging: lustre: osc: drop trivially useless
 initialization

On Sat, 20 Jun 2015, Joachim Eastwood wrote:

> On 20 June 2015 at 21:07, Julia Lawall <Julia.Lawall@...6.fr> wrote:
> > Remove initialization of a variable that is immediately reassigned.
> >
> > The semantic patch that makes this change is as follows:
> > (http://coccinelle.lip6.fr/)
> >
> > // <smpl>
> > @@
> > type T;
> > identifier x;
> > constant C;
> > expression e;
> > @@
> >
> > T x
> > - = C
> >  ;
> > x = e;
> > // </smpl>
> >
> > Signed-off-by: Julia Lawall <Julia.Lawall@...6.fr>
> >
> > ---
> >  drivers/staging/lustre/lustre/osc/osc_page.c |    2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff -u -p a/drivers/staging/lustre/lustre/osc/osc_page.c b/drivers/staging/lustre/lustre/osc/osc_page.c
> > --- a/drivers/staging/lustre/lustre/osc/osc_page.c
> > +++ b/drivers/staging/lustre/lustre/osc/osc_page.c
> > @@ -471,7 +471,7 @@ static int osc_page_flush(const struct l
> >                           struct cl_io *io)
> >  {
> >         struct osc_page *opg = cl2osc_page(slice);
> > -       int rc = 0;
> > +       int rc;
> >
> >         rc = osc_flush_async_page(env, io, opg);
> >         return rc;
> >
> 
> The whole rc variable is kinda useless.
> 
> Why not make it just:
> return osc_flush_async_page(env, io, opg);

Sure.  I'll fix that.

julia
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