[PATCH/RFC] platform_get_irq() return for no IRQ

[Ben Dooks]

in drivers/base/platform.c, platform_get_irq() returns 0 if
there is no IRQ found in the resources, however 0 is a valid
IRQ on at least some of the ARM architectures.

This patch changes the return code to be -ENOENT instead.

Signed-of-by: Ben Dooks <ben-linux@xxxxxxxxx>

--- linux-2.6.9-bk4-orig/drivers/base/platform.c	2004-10-20 15:50:29.000000000 +0100
+++ linux-2.6.9-bk4/drivers/base/platform.c	2004-10-20 18:37:12.000000000 +0100
@@ -54,7 +54,7 @@
 {
 	struct resource *r = platform_get_resource(dev, IORESOURCE_IRQ, num);
 
-	return r ? r->start : 0;
+	return r ? r->start : -ENOENT;
 }
 
 /**