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-rw-r--r--arch/powerpc/platforms/pseries/hotplug-cpu.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/arch/powerpc/platforms/pseries/hotplug-cpu.c b/arch/powerpc/platforms/pseries/hotplug-cpu.c
index ec478f8a98ff..c230ab550aa9 100644
--- a/arch/powerpc/platforms/pseries/hotplug-cpu.c
+++ b/arch/powerpc/platforms/pseries/hotplug-cpu.c
@@ -816,8 +816,16 @@ int dlpar_cpu(struct pseries_hp_errorlog *hp_elog)
case PSERIES_HP_ELOG_ACTION_REMOVE:
if (hp_elog->id_type == PSERIES_HP_ELOG_ID_DRC_COUNT)
rc = dlpar_cpu_remove_by_count(count);
- else if (hp_elog->id_type == PSERIES_HP_ELOG_ID_DRC_INDEX)
+ else if (hp_elog->id_type == PSERIES_HP_ELOG_ID_DRC_INDEX) {
rc = dlpar_cpu_remove_by_index(drc_index);
+ /*
+ * Setting the isolation state of an UNISOLATED/CONFIGURED
+ * device to UNISOLATE is a no-op, but the hypervisor can
+ * use it as a hint that the CPU removal failed.
+ */
+ if (rc)
+ dlpar_unisolate_drc(drc_index);
+ }
else
rc = -EINVAL;
break;