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authorMike Travis <mike.travis@hpe.com>2020-12-03 18:22:52 +0300
committerBorislav Petkov <bp@suse.de>2020-12-03 20:09:18 +0300
commit8dcc0e19dfbd73ad6b3172924d6da8f7f3f8b3b0 (patch)
tree029925c92dae8f55ce9636358d32a173930a198f /arch/x86/kernel
parentfae3a13d2a3d49a89391889808428cf1e72afbd7 (diff)
downloadlinux-8dcc0e19dfbd73ad6b3172924d6da8f7f3f8b3b0.tar.xz
x86/platform/uv: Fix UV4 hub revision adjustment
Currently, UV4 is incorrectly identified as UV4A and UV4A as UV5. Hub chip starts with revision 1, fix it. [ bp: Massage commit message. ] Fixes: 647128f1536e ("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
Diffstat (limited to 'arch/x86/kernel')
-rw-r--r--arch/x86/kernel/apic/x2apic_uv_x.c2
1 files changed, 1 insertions, 1 deletions
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);