From: John Crispin <blogic@openwrt.org>
Date: Sat, 16 Mar 2013 15:28:54 +0000 (+0100)
Subject: MIPS: ralink: add missing comment in irq driver
X-Git-Tag: v3.10-rc1~15^2~2^2~25
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=29473822943ab5357cf3fcb718483f07f3188b83;p=platform%2Fupstream%2Fkernel-adaptation-pc.git

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/
---

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;