[PATCH 2/5] irq: fix existing domain check in irq_domain_add

[tglx@linutronix.de (Thomas Gleixner)]

On Wed, 14 Sep 2011, Rob Herring wrote:

> From: Rob Herring <rob.herring@calxeda.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@calxeda.com>
> Cc: Grant Likely <grant.likely@secretlab.ca>
> Cc: Thomas Gleixner <tglx@linutronix.de>

I take this and 1/5 through irq/urgent

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
> 
>