Messages in this thread Patch in this message | | | Date | Tue, 9 Oct 2007 19:08:15 -0500 | From | Olof Johansson <> | Subject | [PATCH] powerpc: don't enable cpu hotplug on mpic-based pseries |
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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"); + return 0; + } + } + rtas_stop_self_args.token = rtas_token("stop-self"); qcss_tok = rtas_token("query-cpu-stopped-state"); - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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