[PATCH V13 2/4] powerpc/vphn: Improve recognition of PRRN/VPHN

[Michael Bringmann]

powerpc/vphn: On Power systems with shared configurations of CPUs
and memory, there are some issues with the association of additional
CPUs and memory to nodes when hot-adding resources.  This patch
updates the initialization checks to independently recognize PRRN
or VPHN support.

Signed-off-by: Michael Bringmann <m...@linux.vnet.ibm.com>
---
Changes in V13:
  -- Split patch to improve review
---
 arch/powerpc/mm/numa.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index 312f6ee..c08d736 100644
--- a/arch/powerpc/mm/numa.c
+++ b/arch/powerpc/mm/numa.c
@@ -1543,7 +1543,8 @@ int start_topology_update(void)
                        rc = of_reconfig_notifier_register(&dt_update_nb);
 #endif
                }
-       } else if (firmware_has_feature(FW_FEATURE_VPHN) &&
+       }
+       if (firmware_has_feature(FW_FEATURE_VPHN) &&
                   lppaca_shared_proc(get_lppaca())) {
                if (!vphn_enabled) {
                        vphn_enabled = 1;
@@ -1568,7 +1569,8 @@ int stop_topology_update(void)
 #ifdef CONFIG_SMP
                rc = of_reconfig_notifier_unregister(&dt_update_nb);
 #endif
-       } else if (vphn_enabled) {
+       }
+       if (vphn_enabled) {
                vphn_enabled = 0;
                rc = del_timer_sync(&topology_timer);
        }