Re: [PATCH] mfd wm8350: allocate irq descs dynamically

From: Mark Brown
Date: Thu Jun 02 2011 - 09:37:52 EST

On Thu, Jun 02, 2011 at 12:53:49PM +0100, Mark Brown wrote:
> On Thu, Jun 02, 2011 at 01:45:02PM +0200, Sascha Hauer wrote:
> >
> > This allows boards to leave the irq_base field unitialized and
> > prevents them having to reserve irqs in the platform.
> > pdata can be optional for irq support now. Without pdata the
> > driver allocates some free irq range. With pdata and irq_base > 0
> > the driver allocates exactly the specified irq.
> > Without pdata the irq defaults to IRQF_TRIGGER_LOW.

> > Signed-off-by: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>

> Acked-by: Mark Brown <broonie@xxxxxxxxxxxxxxxxxxxxxxxxxxx>

Actually I take that back, it looks like the wm831x equivalent patch is
causing some sort of semi-intermittent issue with the IRQ infrastructure
on non-sparse systems so I suspect this patch is also problematic. The
major symptom is lockups in softirq handling.
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