linux-kernel - Re: [PATCH 1/3] fb: fix overlapping test off-by-one.

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Message-ID: <20101224032831.GI28151@linux-sh.org>
Date:	Fri, 24 Dec 2010 12:28:31 +0900
From:	Paul Mundt <lethal@...ux-sh.org>
To:	Michel D?nzer <michel@...nzer.net>
Cc:	Dave Airlie <airlied@...il.com>, linux-fbdev@...r.kernel.org,
	Dave Airlie <airlied@...hat.com>, linux-kernel@...r.kernel.org,
	dri-devel@...ts.sf.net
Subject: Re: [PATCH 1/3] fb: fix overlapping test off-by-one.

On Tue, Dec 21, 2010 at 08:29:03AM +0100, Michel D?nzer wrote:
> On Die, 2010-12-21 at 11:41 +1000, Dave Airlie wrote: 
> > From: Dave Airlie <airlied@...hat.com>
> > 
> > On my system with a radeon x2, the first GPU was not overlapping vesa
> > but the test decided it was.
> > 
> > Signed-off-by: Dave Airlie <airlied@...hat.com>
> > ---
> >  drivers/video/fbmem.c |    2 +-
> >  1 files changed, 1 insertions(+), 1 deletions(-)
> > 
> > diff --git a/drivers/video/fbmem.c b/drivers/video/fbmem.c
> > index 0e6aa3d..4ac1201 100644
> > --- a/drivers/video/fbmem.c
> > +++ b/drivers/video/fbmem.c
> > @@ -1458,7 +1458,7 @@ static bool apertures_overlap(struct aperture *gen, struct aperture *hw)
> >  	if (gen->base == hw->base)
> >  		return true;
> >  	/* is the generic aperture base inside the hw base->hw base+size */
> > -	if (gen->base > hw->base && gen->base <= hw->base + hw->size)
> > +	if (gen->base > hw->base && gen->base < hw->base + hw->size)
> 
> Good catch.
> 
> Reviewed-by: Michel D??nzer <michel@...nzer.net>
> 
I'll queue this for .37, thanks.
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