Message-ID: <4D652344.1020402@ge.com>
Date: Wed, 23 Feb 2011 15:09:56 +0000
From: Martyn Welch <martyn.welch@ge.com>
Organization: GE Intelligent Platforms
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To: Dan Carpenter <error27@gmail.com>, Manohar Vanga <manohar.vanga@cern.ch>,
        devel@driverdev.osuosl.org, cota@braap.org,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/2] Staging: vme: remove unreachable code
References: <1298403376-28352-1-git-send-email-manohar.vanga@cern.ch> <1298403376-28352-2-git-send-email-manohar.vanga@cern.ch> <4D64D10A.3070702@ge.com> <20110223121726.GR1898@bicker>
In-Reply-To: <20110223121726.GR1898@bicker>
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On 23/02/11 12:17, Dan Carpenter wrote:
> On Wed, Feb 23, 2011 at 09:19:06AM +0000, Martyn Welch wrote:
>> On 22/02/11 19:36, Manohar Vanga wrote:
>>> Remove unreachable code from vme_register_bridge
>>>
>>> Signed-off-by: Manohar Vanga <manohar.vanga@cern.ch>
> 
> Please always CC the list.  It's going to be Greg to commit this
> code so CC Greg as well.
> 
> ./scripts/get_maintainer.pl patch.diff
> 
> (Although you should generally remove Tejun from the CC list.)
> 
>>
>> Yeah - that's there from development. If the function needed to be extended,
>> that's the next part of the error path.
> 
> Don't do that.  Kernel style is austere.  Anything that isn't needed
> here and now should be removed.
> 
>>> --- a/drivers/staging/vme/vme.c
>>> +++ b/drivers/staging/vme/vme.c
>>> @@ -1363,7 +1363,6 @@ int vme_register_bridge(struct vme_bridge *bridge)
>>>  
>>>  	return retval;
>>>  
>>> -	i = VME_SLOTS_MAX;
>>>  err_reg:
>>>  	while (i > -1) {
>>>  		dev = &bridge->dev[i];
> 
> There are two problems with this loop.  1) It unregisters the device
> which failed to register.  2) It is a forever loop.
> 

Even if "i" is a signed int?

> It should be:
> 	while (--i >= 0) {
> 		dev = &bridge->dev[i];
> 
> Can you fix that up as well and resend.
> 
> regards,
> dan carpenter


-- 
Martyn Welch (Principal Software Engineer) | Registered in England and
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