The of_find_node_by_name() function returns a device tree node with its reference count incremented. The caller is responsible for calling of_node_put() to release this reference when done.

Fixes: 730745a5c450 ("[PATCH] 1/5 powerpc: Rework PowerMac i2c part 1") Cc: stable@vger.kernel.org Signed-off-by: Miaoqian Lin linmq006@gmail.com --- arch/powerpc/platforms/powermac/low_i2c.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/arch/powerpc/platforms/powermac/low_i2c.c b/arch/powerpc/platforms/powermac/low_i2c.c index 02474e27df9b..f04dbb93bbfa 100644 --- a/arch/powerpc/platforms/powermac/low_i2c.c +++ b/arch/powerpc/platforms/powermac/low_i2c.c @@ -802,8 +802,10 @@ static void __init pmu_i2c_probe(void) for (channel = 1; channel <= 2; channel++) { sz = sizeof(struct pmac_i2c_bus) + sizeof(struct adb_request); bus = kzalloc(sz, GFP_KERNEL); - if (bus == NULL) + if (bus == NULL) { + of_node_put(busnode); return; + }

bus->controller = busnode; bus->busnode = busnode; @@ -928,6 +930,7 @@ static void __init smu_i2c_probe(void) bus = kzalloc(sz, GFP_KERNEL); if (bus == NULL) { of_node_put(busnode); + of_node_put(controller); return; }