linux-kernel - Re: [PATCH] kernel: shut up the IRQ mismatch messages (Re: wbsd: IRQ handler type mismatch)

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Date:	Tue, 6 Feb 2007 19:46:26 +0000
From:	Alan <alan@...rguk.ukuu.org.uk>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	David Woodhouse <dwmw2@...radead.org>,
	Robert Hancock <hancockr@...w.ca>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	drzeus-wbsd@...eus.cx, wbsd-devel@...t.drzeus.cx
Subject: Re: [PATCH] kernel: shut up the IRQ mismatch messages (Re: wbsd:
 IRQ handler type mismatch)

> > Signed-off-by: Alan Cox <alan@...hat.com>
> > 
> > --- linux.vanilla-2.6.20-rc6-mm3/kernel/irq/manage.c	2007-01-31 14:20:43.000000000 +0000
> > +++ linux-2.6.20-rc6-mm3/kernel/irq/manage.c	2007-02-06 11:01:00.796928504 +0000
> > @@ -372,12 +372,14 @@
> >  	return 0;
> >  
> >  mismatch:
> > +#ifdef CONFIG_DEBUG_SHIRQ
> >  	if (!(new->flags & IRQF_PROBE_SHARED)) {
> >  		printk(KERN_ERR "IRQ handler type mismatch for IRQ %d\n", irq);
> >  		if (old_name)
> >  			printk(KERN_ERR "current handler: %s\n", old_name);
> >  		dump_stack();
> >  	}
> > +#endif	
> >  	spin_unlock_irqrestore(&desc->lock, flags);
> >  	return -EBUSY;
> >  }
> 
> hm, well, it's dependent upon dwmw2's
> generate-a-spurious-irq-at-request_irq-time patch.  Do we want to merge
> that?

CONFIG_DEBUG_SHIRQ seemed to be the right configuration option
irrespective of whether we merge Dave's spurious irq tester (which I
think is actually a good test tool)

Alan
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