linux-kernel - Re: [PATCH 5/5] drivers/media/platform/omap3isp/isp.c: fix error return code

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Date:	Mon, 24 Sep 2012 14:10:10 +0200
From:	Laurent Pinchart <laurent.pinchart@...asonboard.com>
To:	Peter Senna Tschudin <peter.senna@...il.com>
Cc:	Mauro Carvalho Chehab <mchehab@...hat.com>,
	kernel-janitors@...r.kernel.org, Julia.Lawall@...6.fr,
	linux-media@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 5/5] drivers/media/platform/omap3isp/isp.c: fix error return code

Hi,

On Sunday 23 September 2012 19:46:53 Peter Senna Tschudin wrote:
> On Sun, Sep 23, 2012 at 7:39 PM, Mauro Carvalho Chehab wrote:
> > Laurent,
> > 
> > Could you please review this patch?
> > 
> > Peter,
> > 
> > Please, always c/c the driver maintainer/author on patches you submit.
> > 
> > You can check it with scripts/get_maintainer.pl.
> 
> Sorry for that. I'll be more careful next time. Thanks!
> 
> > Regards,
> > Mauro
> > 
> > -------- Mensagem original --------
> > Assunto: [PATCH 5/5] drivers/media/platform/omap3isp/isp.c: fix error
> > return code Data: Tue,  4 Sep 2012 18:14:25 +0200
> > De: Peter Senna Tschudin <peter.senna@...il.com>
> > Para: Mauro Carvalho Chehab <mchehab@...radead.org>
> > CC: kernel-janitors@...r.kernel.org, Julia.Lawall@...6.fr,
> > linux-media@...r.kernel.org, linux-kernel@...r.kernel.org
> > 
> > From: Peter Senna Tschudin <peter.senna@...il.com>
> > 
> > Convert a nonnegative error return code to a negative one, as returned
> > elsewhere in the function.
> > 
> > A simplified version of the semantic match that finds this problem is as
> > follows: (http://coccinelle.lip6.fr/)
> > 
> > // <smpl>
> > (
> > if@p1 (\(ret < 0\|ret != 0\))
> > 
> >  { ... return ret; }
> > 
> > ret@p1 = 0
> > )
> > ... when != ret = e1
> > 
> >     when != &ret
> > 
> > *if(...)
> > {
> > 
> >   ... when != ret = e2
> >   
> >       when forall
> >  
> >  return ret;
> > 
> > }
> > 
> > // </smpl>
> > 
> > Signed-off-by: Peter Senna Tschudin <peter.senna@...il.com>
> > 
> > ---
> > 
> >  drivers/media/platform/omap3isp/isp.c |    4 +++-
> >  1 file changed, 3 insertions(+), 1 deletion(-)
> > 
> > diff --git a/drivers/media/platform/omap3isp/isp.c
> > b/drivers/media/platform/omap3isp/isp.c index e0096e0..91fcaef 100644
> > --- a/drivers/media/platform/omap3isp/isp.c
> > +++ b/drivers/media/platform/omap3isp/isp.c
> > @@ -2102,8 +2102,10 @@ static int __devinit isp_probe(struct
> > platform_device *pdev)> 
> >         if (ret < 0)
> >                 goto error;
> > 
> > -       if (__omap3isp_get(isp, false) == NULL)
> > +       if (__omap3isp_get(isp, false) == NULL) {
> > +               ret = -EBUSY; /* Not sure if EBUSY is best for here */

I've replaced -EBUSY with -ENODEV, removed the comment and applied the patch 
to my tree. Thanks.

> >                 goto error;
> > +       }
> > 
> >         ret = isp_reset(isp);
> >         if (ret < 0)

-- 
Regards,

Laurent Pinchart

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