linux-kernel - Re: [PATCH 1/2] Staging: vme: remove unreachable code

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Message-ID: <20110223121726.GR1898@bicker>
Date:	Wed, 23 Feb 2011 15:17:26 +0300
From:	Dan Carpenter <error27@...il.com>
To:	Martyn Welch <martyn.welch@...com>
Cc:	Manohar Vanga <manohar.vanga@...n.ch>, devel@...verdev.osuosl.org,
	cota@...ap.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] Staging: vme: remove unreachable code

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@...n.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.

It should be:
	while (--i >= 0) {
		dev = &bridge->dev[i];

Can you fix that up as well and resend.

regards,
dan carpenter
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