[PATCH 3/4] MIPS: lantiq: dont register irq_chip for the irq cascade

[John Crispin <blogic@openwrt.org>]

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

Signed-off-by: John Crispin <blogic@openwrt.org>
---
 arch/mips/lantiq/irq.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

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;
-- 
1.7.9.1