Request_irq fails for IRQ2

[smitha.vanga at wipro.com]

Hi Scott,

I am able to register the IRQ now once I add the call irq_set_default_host in cpm2_pic.
But when I call enable_irq the code throws the below warning and gives exception in enable irq at 
spin_unlock_irqrestore(&desc->lock, flags); in enable_irq.


printk(KERN_WARNING "Unbalanced enable for IRQ %d\n", irq);

Regards,
Smitha
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