[PATCH] genirq: __irq_set_trigger: change pr_warning to pr_debug

[Mark Nelson <markn@au1.ibm.com>]

Commit 0c5d1eb77a8be917b638344a22afe1398236482b (genirq: record trigger
type) caused powerpc platforms that had no set_type() function in their
struct irq_chip to spew out warnings about "No set_type function for
IRQ...". This warning isn't necessarily justified though because the
generic powerpc platform code calls set_irq_type() (which in turn calls
__irq_set_trigger) with information from the device tree to establish
the interrupt mappings, regardless of whether the PIC can actually set
a type.

A platform's irq_chip might not have a set_type function for a variety
of reasons, for example: the platform may have the type essentially
hard-coded, or as in the case for Cell interrupts are just messages
past around that have no real concept of type, or the platform
could even have a virtual PIC as on the PS3.

Signed-off-by: Mark Nelson <markn@au1.ibm.com>
---
Thanks Ingo! Much appreciated

 kernel/irq/manage.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: upstream/kernel/irq/manage.c
===================================================================
--- upstream.orig/kernel/irq/manage.c
+++ upstream/kernel/irq/manage.c
@@ -327,7 +327,7 @@ int __irq_set_trigger(struct irq_desc *d
 		 * IRQF_TRIGGER_* but the PIC does not support multiple
 		 * flow-types?
 		 */
-		pr_warning("No set_type function for IRQ %d (%s)\n", irq,
+		pr_debug("No set_type function for IRQ %d (%s)\n", irq,
 				chip ? (chip->name ? : "unknown") : "unknown");
 		return 0;
 	}