Subject: Re: [patch 06/13] powerpc: cell interrupt controller updates

From: Milton Miller <[email-masked]>
Date: Fri, 24 Mar 2006 11:43:39 -0600

On Mar 22, 2006, at 5:00 PM, Arnd Bergmann wrote:
>  static void spider_enable_irq(unsigned int irq)
>  {
> +	int nodeid = (irq / IIC_NODE_STRIDE) * 0x10;
>  	void __iomem *cfg = spider_get_irq_config(irq);
>  	irq = spider_get_nr(irq);
>
> -	out_be32(cfg, in_be32(cfg) | 0x3107000eu);
> +	out_be32(cfg, in_be32(cfg) | 0x3107000eu | nodeid);
>  	out_be32(cfg + 4, in_be32(cfg + 4) | 0x00020000u | irq);
>  }
>

I just did a quick read of the code, but my first thought is what if 
some other node id was previously set?  Perhaps you should mask off 
some bits before or'ing in the node id?

milton