[RFC PATCH v4 01/18] ARM: kernel: fix arm_dt_init_cpu_maps() to skip non-cpu nodes

[Rob Herring]

On Fri, May 17, 2013 at 10:20 AM, Lorenzo Pieralisi
<lorenzo.pieralisi at arm.com> wrote:
> The introduction of the cpu-map topology node in the cpus node implies
> that cpus node might have children that are not cpu nodes. The DT
> parsing code needs updating otherwise it would check for cpu nodes
> properties in nodes that are not required to contain them, resulting
> in warnings that have no bearing on bindings defined in the dts source file.

Great, so a new DT with cpu-map entries may not work with old kernels.
Please check the behavior. This should go to stable kernels.

Rob

>
> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi at arm.com>
> ---
>  arch/arm/kernel/devtree.c | 3 +++
>  1 file changed, 3 insertions(+)
>
> diff --git a/arch/arm/kernel/devtree.c b/arch/arm/kernel/devtree.c
> index 5af04f6..904cad5 100644
> --- a/arch/arm/kernel/devtree.c
> +++ b/arch/arm/kernel/devtree.c
> @@ -92,6 +92,9 @@ void __init arm_dt_init_cpu_maps(void)
>         for_each_child_of_node(cpus, cpu) {
>                 u32 hwid;
>
> +               if (of_node_cmp(cpu->type, "cpu"))
> +                       continue;
> +
>                 pr_debug(" * %s...\n", cpu->full_name);
>                 /*
>                  * A device tree containing CPU nodes with missing "reg"
> --
> 1.8.2.2
>
>
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