[XenPPC] mpic reset

[Amos Waterland <apw@xxxxxxxxxx>]

I don't see a definitive statement in the mpic spec.  Is it ok to reset
the mpic an arbitrary number of times, or even more than once, after
power on?  We are allowing dom0 to reset it at the moment ...


> diff -r b9e38b262f64 arch/powerpc/sysdev/mpic.c
> --- a/arch/powerpc/sysdev/mpic.c      Sun Oct 08 14:22:12 2006 -0400
> +++ b/arch/powerpc/sysdev/mpic.c      Tue Oct 10 18:10:53 2006 -0400
> @@ -619,6 +619,7 @@ struct mpic * __init mpic_alloc(unsigned
>       mpic->tmregs = mpic->gregs + ((MPIC_TIMER_BASE - MPIC_GREG_BASE) >> 2);
>       BUG_ON(mpic->gregs == NULL);
>  
> +#if 0
>       /* Reset */
>       if (flags & MPIC_WANTS_RESET) {
>               mpic_write(mpic->gregs, MPIC_GREG_GLOBAL_CONF_0,
> @@ -628,6 +629,7 @@ struct mpic * __init mpic_alloc(unsigned
>                      & MPIC_GREG_GCONF_RESET)
>                       mb();
>       }
> +#endif

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