[PATCH v3 02/11] irqchip: mmp: support irqchip

[Russell King - ARM Linux]

On Mon, Jun 03, 2013 at 05:30:36PM +0800, Haojian Zhuang wrote:
> @@ -64,7 +60,7 @@ static const char *mmp_dt_board_compat[] __initdata = {
>  
>  DT_MACHINE_START(PXA168_DT, "Marvell PXA168 (Device Tree Support)")
>  	.map_io		= mmp_map_io,
> -	.init_irq	= mmp_dt_irq_init,
> +	.init_irq	= irqchip_init,
>  	.init_time	= mmp_dt_init_timer,
>  	.init_machine	= pxa168_dt_init,
>  	.dt_compat	= mmp_dt_board_compat,
> @@ -72,7 +68,7 @@ MACHINE_END
>  
>  DT_MACHINE_START(PXA910_DT, "Marvell PXA910 (Device Tree Support)")
>  	.map_io		= mmp_map_io,
> -	.init_irq	= mmp_dt_irq_init,
> +	.init_irq	= irqchip_init,

This is what's in linux-next:

void __init init_IRQ(void)
{
        if (IS_ENABLED(CONFIG_OF) && !machine_desc->init_irq)
                irqchip_init();
        else
                machine_desc->init_irq();
}

So just set your .init_irq to NULL after basing your patchset on
ebafed7ab9b637656b685f1dc1ee528c77241a0d (ARM: irq: Call irqchip_init
if no init_irq function is specified).