[PATCH 8/8] powerpc/pseries: child nodes are not detached by dlpar_detach_node

[Tyrel Datwyler]

Calls to dlpar_detach_node do not iterate over child nodes detaching them as
well. By iterating and detaching the child nodes we ensure that they have the
OF_DETACHED flag set and that their reference counts are decremented such that
the node will be freed from memory by of_node_release.

Signed-off-by: Tyrel Datwyler <tyreld at linux.vnet.ibm.com>
---
 arch/powerpc/platforms/pseries/dlpar.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/arch/powerpc/platforms/pseries/dlpar.c b/arch/powerpc/platforms/pseries/dlpar.c
index 4ea667d..7cfdaae 100644
--- a/arch/powerpc/platforms/pseries/dlpar.c
+++ b/arch/powerpc/platforms/pseries/dlpar.c
@@ -286,8 +286,15 @@ int dlpar_attach_node(struct device_node *dn)
 
 int dlpar_detach_node(struct device_node *dn)
 {
+	struct device_node *child;
 	int rc;
 
+	child = of_get_next_child(dn, NULL);
+	while (child) {
+		dlpar_detach_node(child);
+		child = of_get_next_child(dn, child);
+	}
+
 	rc = of_detach_node(dn);
 	if (rc)
 		return rc;
-- 
1.7.12.4