[POWERPC] Fix OF node refcnt underflow in 836x and 832x platform code

Incorrect use of of_find_node_by_name() causes of_node_put()
on a node which has already been put.  It causes the refcount of
the node to underflow, which triggers the WARN_ON in kref_get
for 836x and 832x.  This fixes it.

Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

2 files changed, 2 insertions, 2 deletions

diff --git a/arch/powerpc/platforms/83xx/mpc832x_mds.c b/arch/powerpc/platforms/83xx/mpc832x_mds.c
index f58c9780b66f..4d471190be8d 100644
--- a/arch/powerpc/platforms/83xx/mpc832x_mds.c
+++ b/arch/powerpc/platforms/83xx/mpc832x_mds.c
@@ -103,7 +103,7 @@ static void __init mpc832x_sys_setup_arch(void)
 #ifdef CONFIG_QUICC_ENGINE
         qe_reset();
 
-        if ((np = of_find_node_by_name(np, "par_io")) != NULL) {
+        if ((np = of_find_node_by_name(NULL, "par_io")) != NULL) {
                 par_io_init(np);
                 of_node_put(np);
 
diff --git a/arch/powerpc/platforms/83xx/mpc8360e_pb.c b/arch/powerpc/platforms/83xx/mpc8360e_pb.c
index 7bfd47ad7233..53b92a904e8e 100644
--- a/arch/powerpc/platforms/83xx/mpc8360e_pb.c
+++ b/arch/powerpc/platforms/83xx/mpc8360e_pb.c
@@ -108,7 +108,7 @@ static void __init mpc8360_sys_setup_arch(void)
 #ifdef CONFIG_QUICC_ENGINE
         qe_reset();
 
-        if ((np = of_find_node_by_name(np, "par_io")) != NULL) {
+        if ((np = of_find_node_by_name(NULL, "par_io")) != NULL) {
                 par_io_init(np);
                 of_node_put(np);