Commit c7d07fdd authored Apr 05, 2009 by Michael Ellerman Committed by Paul Mackerras Apr 07, 2009

powerpc: Print information about mapping hw irqs to virtual irqs



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@ellerman.id.au>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>

parent cb93d568

arch/powerpc/kernel/irq.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -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);