linux-kernel - Re: [PATCH 08/14] xen: netback: Remove redundant check on unsigned variable

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <1353057394.3499.159.camel@zakaz.uk.xensource.com>
Date:	Fri, 16 Nov 2012 09:16:34 +0000
From:	Ian Campbell <Ian.Campbell@...rix.com>
To:	Tushar Behera <tushar.behera@...aro.org>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"patches@...aro.org" <patches@...aro.org>,
	"xen-devel@...ts.xensource.com" <xen-devel@...ts.xensource.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [PATCH 08/14] xen: netback: Remove redundant check on unsigned
 variable

On Fri, 2012-11-16 at 06:50 +0000, Tushar Behera wrote:
> No need to check whether unsigned variable is less than 0.
> 
> CC: Ian Campbell <ian.campbell@...rix.com>
> CC: xen-devel@...ts.xensource.com
> CC: netdev@...r.kernel.org
> Signed-off-by: Tushar Behera <tushar.behera@...aro.org>

Acked-by: Ian Campbell <ian.campbell@...rix.com>

Thanks.

> ---
>  drivers/net/xen-netback/netback.c |    4 ++--
>  1 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/net/xen-netback/netback.c b/drivers/net/xen-netback/netback.c
> index aab8677..515e10c 100644
> --- a/drivers/net/xen-netback/netback.c
> +++ b/drivers/net/xen-netback/netback.c
> @@ -190,14 +190,14 @@ static int get_page_ext(struct page *pg,
>  
>  	group = ext.e.group - 1;
>  
> -	if (group < 0 || group >= xen_netbk_group_nr)
> +	if (group >= xen_netbk_group_nr)
>  		return 0;
>  
>  	netbk = &xen_netbk[group];
>  
>  	idx = ext.e.idx;
>  
> -	if ((idx < 0) || (idx >= MAX_PENDING_REQS))
> +	if (idx >= MAX_PENDING_REQS)
>  		return 0;
>  
>  	if (netbk->mmap_pages[idx] != pg)


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/