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SubjectRe: [PATCH] Fix UV4 Hub Revision adjustment
Reviewed-by: Steve Wahl <steve.wahl@hpe.com>

On Thu, Dec 03, 2020 at 09:22:52AM -0600, Mike Travis wrote:
> Fix UV4 Hub Revision adjustment as Hub chip starts with revision 1.
> Incorrectly identifies UV4 as UV4A and UV4A as UV5.
>
> Fixes 647128f1536ef: x86/platform/uv: Update UV MMRs for UV5
>
> Signed-off-by: Mike Travis <mike.travis@hpe.com>
> Acked-by: Dimitri Sivanich <dimitri.sivanich@hpe.com>
> ---
> arch/x86/kernel/apic/x2apic_uv_x.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c
> index 1b98f8c12b96..235f5cde06fc 100644
> --- a/arch/x86/kernel/apic/x2apic_uv_x.c
> +++ b/arch/x86/kernel/apic/x2apic_uv_x.c
> @@ -161,7 +161,7 @@ static int __init early_set_hub_type(void)
> /* UV4/4A only have a revision difference */
> case UV4_HUB_PART_NUMBER:
> uv_min_hub_revision_id = node_id.s.revision
> - + UV4_HUB_REVISION_BASE;
> + + UV4_HUB_REVISION_BASE - 1;
> uv_hub_type_set(UV4);
> if (uv_min_hub_revision_id == UV4A_HUB_REVISION_BASE)
> uv_hub_type_set(UV4|UV4A);
> --
> 2.21.0
>

--
Steve Wahl, Hewlett Packard Enterprise

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