[RFC] [PATCH 3/3] IRQ: irq domain: defer of irq ressoure resolve at platform_drv_probe

[Arnd Bergmann]

On Thursday 30 May 2013, Grant Likely wrote:
> On Thu, May 30, 2013 at 8:52 AM, Arnd Bergmann <arnd at arndb.de> wrote:
> >
> > Since a platform device only has one "interrupt-parent", as soon as
> > one of the interrupts can get mapped, I would expect that the controller
> > is present, and we don't need to defer the probing any more.
> 
> If it goes through an interrupt map node then it may only be able to
> resolve a subset.

Right, so we clearly need it. I also though of a second case, which
is that the xlate() function might itself return -EPROBE_DEFER in
the case that the irqchip driver is registered but e.g. not the
parent of a cascaded irqchip.

	Arnd