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Date: Tue, 4 Oct 2011 10:30:36 -0500
From: Scott Wood <scottwood@freescale.com>
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To: <smitha.vanga@wipro.com>
Subject: Re: Request_irq fails for IRQ2
References: <40631E9A2581F14BA60888C87A76A1FE014773@HYD-MKD-MBX4.wipro.com>
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On 10/04/2011 06:21 AM, smitha.vanga@wipro.com wrote:
> 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);

The IRQ is automatically enabled when you request it.  Only call
enable_irq() if you previously called disable_irq().

-Scott