[PATCH 1/3] ARM: shmobile: irqpin: fix handling of spurious interrupts in DT case

[Simon Horman]

On Thu, Mar 21, 2013 at 05:05:36PM +0100, Guennadi Liakhovetski wrote:
> To disable spurious interrupts, that get triggered on certain hardware, the
> irqpin driver masks them on the parent interrupt controller. To specify
> such broken devices a .control_parent parameter can be provided in the
> platform data. In the DT case we need a property, to do the same. However,
> this is not enough to correctly handle spurious interrupts in the DT case.
> In the non-DT case all interrupts get mapped statically during probing,
> therefore, if a spurious interrupt arrives, it can easily be mapped back
> to hardware registers and bits and handled. In the DT case interrupts are
> mapped only when a device, using that interrupt is instantiated from DT.
> So, spurious interrupts occur unmapped and thus cannot be handled properly.
> This patch fixes this by mapping such interrupts as they occur.
> 
> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski at gmx.de>

Thanks, queued up for v3.10 in the intc-external-irq branch of the renesas tree.