linux-kernel - Re: [PATCH] removes unused variable from kernel/sysctl.h

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Date:	Tue, 5 May 2009 14:36:27 +0200 (CEST)
From:	Jiri Kosina <jkosina@...e.cz>
To:	Sukanto Ghosh <sukanto.cse.iitb@...il.com>
Cc:	linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH] removes unused variable from kernel/sysctl.h

On Thu, 16 Apr 2009, Sukanto Ghosh wrote:

> This patch removes the unused variable 'val' from the
> __do_proc_dointvec() function
> in kernel/sysctl.h. The integer has been declared and used as 'val =
> -val' and there is
> no reference to it anywhere.
> Although I am this doesn't affects the kernel binary because gcc
> removes it, still it
> might be confusing for people reading the code.
> 
> 
> Signed-off-by: Sukanto Ghosh <sukanto.cse.iitb@...il.com>
> 
> ----
> 
> --- linux-2.6.29.1/kernel/sysctl.c.orig 2009-04-16 19:57:21.000000000 +0530
> +++ linux-2.6.29.1/kernel/sysctl.c      2009-04-16 19:58:26.000000000 +0530
> @@ -2198,7 +2198,7 @@ static int __do_proc_dointvec(void *tbl_
>                   void *data)
>  {
>  #define TMPBUFLEN 21
> -       int *i, vleft, first=1, neg, val;
> +       int *i, vleft, first=1, neg;
>         unsigned long lval;
>         size_t left, len;
> 
> @@ -2251,8 +2251,6 @@ static int __do_proc_dointvec(void *tbl_
>                         len = p-buf;
>                         if ((len < left) && *p && !isspace(*p))
>                                 break;
> -                       if (neg)
> -                               val = -val;
>                         s += len;
>                         left -= len;

This doesn't seem to be picked up by anyone, CCing akpm.

-- 
Jiri Kosina
SUSE Labs
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