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x86/platform/uv: Fix UV4 hub revision adjustment

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Currently, UV4 is incorrectly identified as UV4A and UV4A as UV5. Hub
chip starts with revision 1, fix it.

 [ bp: Massage commit message. ]

Fixes: 647128f153 ("x86/platform/uv: Update UV MMRs for UV5")
Signed-off-by: Mike Travis <mike.travis@hpe.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Steve Wahl <steve.wahl@hpe.com>
Acked-by: Dimitri Sivanich <dimitri.sivanich@hpe.com>
Link: https://lkml.kernel.org/r/20201203152252.371199-1-mike.travis@hpe.com
This commit is contained in:
Mike Travis 2020-12-03 09:22:52 -06:00 committed by Borislav Petkov
parent fae3a13d2a
commit 8dcc0e19df
1 changed files with 1 additions and 1 deletions
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2
arch/x86/kernel/apic/x2apic_uv_x.c
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@ -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);