From: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Date: Thu, 30 Apr 2015 01:44:58 +0000 (-0500)
Subject: powerpc/pseries: Fix possible leaked device node reference
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=2222ce0fbbcc4ebfa9995c8d23d72c8239ad712c;p=openwrt%2Fstaging%2Fblogic.git

powerpc/pseries: Fix possible leaked device node reference

Failure return from dlpar_configure_connector when dlpar adding cpus
results in leaking references to the cpus parent device node. Move the
call to of_node_put() prior to checking the result of
dlpar_configure_connector.

Fixes: 8d5ff320766f ("powerpc/pseries: Make dlpar_configure_connector parent node aware")

Signed-off-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
---

diff --git a/arch/powerpc/platforms/pseries/dlpar.c b/arch/powerpc/platforms/pseries/dlpar.c
index 019d34aaf054..47d9cebe7159 100644
--- a/arch/powerpc/platforms/pseries/dlpar.c
+++ b/arch/powerpc/platforms/pseries/dlpar.c
@@ -421,11 +421,10 @@ static ssize_t dlpar_cpu_probe(const char *buf, size_t count)
 		return -ENODEV;
 
 	dn = dlpar_configure_connector(cpu_to_be32(drc_index), parent);
+	of_node_put(parent);
 	if (!dn)
 		return -EINVAL;
 
-	of_node_put(parent);
-
 	rc = dlpar_attach_node(dn);
 	if (rc) {
 		dlpar_release_drc(drc_index);