openwrt-xburst/target/linux/lantiq/patches-3.6/0004-MIPS-lantiq-dont-register-irq_chip-for-the-irq-casca.patch

From 9c1628b603ee9d2bb220be0400c5dc6950cf012b Mon Sep 17 00:00:00 2001
From: John Crispin <blogic@openwrt.org>
Date: Thu, 16 Aug 2012 08:09:21 +0000
Subject: [PATCH 4/9] MIPS: lantiq: dont register irq_chip for the irq cascade

We dont want to register the irq_chip for the MIPS IRQ cascade.

Signed-off-by: John Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/4230/
---
 arch/mips/lantiq/irq.c |    3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/mips/lantiq/irq.c b/arch/mips/lantiq/irq.c
index 0cec43d..87f15d6 100644
--- a/arch/mips/lantiq/irq.c
+++ b/arch/mips/lantiq/irq.c
@@ -297,6 +297,9 @@ static int icu_map(struct irq_domain *d, unsigned int irq, irq_hw_number_t hw)
 	struct irq_chip *chip = &ltq_irq_type;
 	int i;
 
+	if (hw < MIPS_CPU_IRQ_CASCADE)
+		return 0;
+
 	for (i = 0; i < exin_avail; i++)
 		if (hw == ltq_eiu_irq[i])
 			chip = &ltq_eiu_type;
-- 
1.7.10.4