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

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Message-ID: <50DD2AFB.6030701@linaro.org>
Date:	Fri, 28 Dec 2012 10:45:39 +0530
From:	Tushar Behera <tushar.behera@...aro.org>
To:	Ian Campbell <Ian.Campbell@...rix.com>
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 11/16/2012 02:46 PM, Ian Campbell wrote:
> 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.
> 

This patch was not picked up for 3.8-rc1. Any idea, who should pick this up?

>> ---
>>  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)
> 
> 


-- 
Tushar Behera
--
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