Re: [PATCH] powerpc: don't enable cpu hotplug on mpic-based pseries

Stephen Rothwell
2007-10-10T00:18:52Z

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Hi Olof,

On Tue, 9 Oct 2007 19:08:15 -0500 Olof Johansson <olof@lixom.net> wrote:
>
> Don't allow cpu hotplug on systems lacking XICS interrupt controller,
> since current platform code is hardcoded for it.
>
>
> Signed-off-by: Olof Johansson <olof@lixom.net>
>
>
> diff --git a/arch/powerpc/platforms/pseries/hotplug-cpu.c b/arch/powerpc/platforms/pseries/hotplug-cpu.c
> index 9711eb0..e29b890 100644
> --- a/arch/powerpc/platforms/pseries/hotplug-cpu.c
> +++ b/arch/powerpc/platforms/pseries/hotplug-cpu.c
> @@ -252,6 +252,19 @@ static struct notifier_block pseries_smp_nb = {
>
> static int __init pseries_cpu_hotplug_init(void)
> {
> + struct device_node *np;
> + const char *typep;
> +
> + for (np = NULL; (np = of_find_node_by_name(np,
> + "interrupt-controller"));) {
> + typep = of_get_property(np, "compatible", NULL);
> + if (strstr(typep, "open-pic")) {
> + printk(KERN_INFO "CPU Hotplug not supported on "
> + "systems using MPIC\n");

You need an of_node_put(np) here.

--
Cheers,
Stephen Rothwell sfr@canb.auug.org.au
http://www.canb.auug.org.au/~sfr/

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