[DRIVER CORE] platform_get_irq*(): return NO_IRQ on error

[David Vrabel]

platform_get_irq*() cannot return 0 on error as 0 is a valid IRQ on some
platforms, return NO_IRQ (-1) instead.

Signed-off-by: David Vrabel <dvrabel@xxxxxxxxx>
-- 
David Vrabel, Design Engineer

Arcom, Clifton Road           Tel: +44 (0)1223 411200 ext. 3233
Cambridge CB1 7EA, UK         Web: http://www.arcom.com/
Index: linux-2.6-working/drivers/base/platform.c
===================================================================
--- linux-2.6-working.orig/drivers/base/platform.c	2006-01-05 16:49:23.000000000 +0000
+++ linux-2.6-working/drivers/base/platform.c	2006-01-05 17:10:18.000000000 +0000
@@ -59,7 +59,7 @@
 {
 	struct resource *r = platform_get_resource(dev, IORESOURCE_IRQ, num);
 
-	return r ? r->start : 0;
+	return r ? r->start : NO_IRQ;
 }
 
 /**
@@ -94,7 +94,7 @@
 {
 	struct resource *r = platform_get_resource_byname(dev, IORESOURCE_IRQ, name);
 
-	return r ? r->start : 0;
+	return r ? r->start : NO_IRQ;
 }
 
 /**