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Date: Mon, 1 Feb 2010 16:44:19 +1100
From: Anton Blanchard <anton@samba.org>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Subject: Re: [PATCH] powerpc: Reduce footprint of irq_stat
Message-ID: <20100201054419.GR2996@kryten>
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Hi,

> > +static inline void ack_bad_irq(unsigned int irq)
> > +{
> > +	printk(KERN_CRIT "unexpected IRQ trap at vector %02x\n", irq);
> > +}
> 
> Looks like some unrelated gunk slipped into this patch :-)

We need that to link :) 

kernel/irq/handle.c: In function ‘handle_bad_irq’:
kernel/irq/handle.c:43: error: implicit declaration of function ‘ack_bad_irq’

It's basically a copy of the fallback handler in the asm-generic hardirq.h
I'm happy to change it print "IRQ on fire" :)

Anton