[PATCH] powerpc: Print information about mapping hw irqs to virtual irqs

[Grant Likely]

On Sun, Apr 5, 2009 at 8:05 PM, Michael Ellerman <michael at ellerman.id.au> wrote:
> The irq remapping layer seems to cause some confusion when people
> see a different irq number in /proc/interrupts vs the one they
> request in their driver or DTS.
>
> So have the irq remapping layer print out a message when we map an
> irq. The message is only printed the first time the irq is mapped,
> and it's KERN_DEBUG so most people won't see it.
>
> Signed-off-by: Michael Ellerman <michael at ellerman.id.au>

Acked-by: Grant Likely <grant.likely at secretlab.ca>

> ---
>  arch/powerpc/kernel/irq.c |    4 +++-
>  1 files changed, 3 insertions(+), 1 deletions(-)
>
> diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
> index 5576147..8c1a496 100644
> --- a/arch/powerpc/kernel/irq.c
> +++ b/arch/powerpc/kernel/irq.c
> @@ -672,11 +672,13 @@ unsigned int irq_create_mapping(struct irq_host *host,
>                        return NO_IRQ;
>                }
>        }
> -       pr_debug("irq: -> obtained virq %d\n", virq);
>
>        if (irq_setup_virq(host, virq, hwirq))
>                return NO_IRQ;
>
> +       printk(KERN_DEBUG "irq: irq %lu on host %s mapped to virtual irq %u\n",
> +               hwirq, host->of_node ? host->of_node->full_name : "null", virq);
> +
>        return virq;
>  }
>  EXPORT_SYMBOL_GPL(irq_create_mapping);
> --
> 1.6.1.2
>
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>



-- 
Grant Likely, B.Sc., P.Eng.
Secret Lab Technologies Ltd.