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From 7c268f1b47669be2efce1607ee02193cb49424cf Mon Sep 17 00:00:00 2001
From: John Crispin <blogic@openwrt.org>
Date: Sat, 16 Mar 2013 16:28:54 +0100
Subject: [PATCH 20/79] MIPS: ralink: add missing comment in irq driver

Trivial patch that adds a comment that makes the code more readable.

Signed-off-by: John Crispin <blogic@openwrt.org>
Acked-by: Gabor Juhos <juhosg@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/5168/
---
 arch/mips/ralink/irq.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/mips/ralink/irq.c b/arch/mips/ralink/irq.c
index d9807d0..320b1f1 100644
--- a/arch/mips/ralink/irq.c
+++ b/arch/mips/ralink/irq.c
@@ -166,6 +166,7 @@ static int __init intc_of_init(struct device_node *node,
 	irq_set_chained_handler(irq, ralink_intc_irq_handler);
 	irq_set_handler_data(irq, domain);
 
+	/* tell the kernel which irq is used for performance monitoring */
 	cp0_perfcount_irq = irq_create_mapping(domain, 9);
 
 	return 0;
-- 
1.7.10.4