linux-kernel - Re: [PATCH 2/5] irq: fix existing domain check in irq_domain

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Date:	Sat, 17 Sep 2011 17:24:42 -0600
From:	Grant Likely <grant.likely@...retlab.ca>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	Rob Herring <robherring2@...il.com>,
	linux-arm-kernel@...ts.infradead.org,
	devicetree-discuss@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
	marc.zyngier@....com, thomas.abraham@...aro.org,
	jamie@...ieiles.com, b-cousson@...com, shawn.guo@...aro.org,
	Rob Herring <rob.herring@...xeda.com>
Subject: Re: [PATCH 2/5] irq: fix existing domain check in irq_domain_add

On Wed, Sep 14, 2011 at 06:44:50PM +0200, Thomas Gleixner wrote:
> On Wed, 14 Sep 2011, Rob Herring wrote:
> 
> > From: Rob Herring <rob.herring@...xeda.com>
> > 
> > irq_data will normally exist, so the domain was prevented from being set.
> > The simple domain code did not hit this as nr_irq is always 0.
> > 
> > Signed-off-by: Rob Herring <rob.herring@...xeda.com>
> > Cc: Grant Likely <grant.likely@...retlab.ca>
> > Cc: Thomas Gleixner <tglx@...utronix.de>
> 
> I take this and 1/5 through irq/urgent

Thanks Thomas.

g.

> 
> Thanks,
> 
> 	tglx
> 
> > ---
> >  kernel/irq/irqdomain.c |    2 +-
> >  1 files changed, 1 insertions(+), 1 deletions(-)
> > 
> > diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c
> > index d5828da..84f4110 100644
> > --- a/kernel/irq/irqdomain.c
> > +++ b/kernel/irq/irqdomain.c
> > @@ -29,7 +29,7 @@ void irq_domain_add(struct irq_domain *domain)
> >  	 */
> >  	for (hwirq = 0; hwirq < domain->nr_irq; hwirq++) {
> >  		d = irq_get_irq_data(irq_domain_to_irq(domain, hwirq));
> > -		if (d || d->domain) {
> > +		if (d && d->domain) {
> >  			/* things are broken; just report, don't clean up */
> >  			WARN(1, "error: irq_desc already assigned to a domain");
> >  			return;
> > -- 
> > 1.7.5.4
> > 
> > 
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