[PATCH] [POWERPC] Fix QEIC->MPIC cascading

[Timur Tabi]

Anton Vorontsov wrote:
> set_irq_chained_handler overwrites MPIC's handle_irq function
> (handle_fasteoi_irq) thus MPIC never gets eoi event from the
> cascaded IRQ. This situation hangs MPIC on MPC8568E.

I'm not familiar with the differences between IPIC and MPIC.  What is this 
patch not needed for 83xx?

-- 
Timur Tabi
Linux Kernel Developer @ Freescale