3 files changed, 62 insertions, 4 deletions

diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index 17e96698410e..03204bfd17af 100644
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c
@@ -568,6 +568,36 @@ static void bus_remove_attrs(struct bus_type * bus)
 	}
 }
 
+static void klist_devices_get(struct klist_node *n)
+{
+	struct device *dev = container_of(n, struct device, knode_bus);
+
+	get_device(dev);
+}
+
+static void klist_devices_put(struct klist_node *n)
+{
+	struct device *dev = container_of(n, struct device, knode_bus);
+
+	put_device(dev);
+}
+
+static void klist_drivers_get(struct klist_node *n)
+{
+	struct device_driver *drv = container_of(n, struct device_driver,
+						 knode_bus);
+
+	get_driver(drv);
+}
+
+static void klist_drivers_put(struct klist_node *n)
+{
+	struct device_driver *drv = container_of(n, struct device_driver,
+						 knode_bus);
+
+	put_driver(drv);
+}
+
 /**
  *	bus_register - register a bus with the system.
  *	@bus:	bus.
@@ -602,8 +632,8 @@ int bus_register(struct bus_type * bus)
 	if (retval)
 		goto bus_drivers_fail;
 
-	klist_init(&bus->klist_devices);
-	klist_init(&bus->klist_drivers);
+	klist_init(&bus->klist_devices, klist_devices_get, klist_devices_put);
+	klist_init(&bus->klist_drivers, klist_drivers_get, klist_drivers_put);
 	bus_add_attrs(bus);
 
 	pr_debug("bus type '%s' registered\n", bus->name);
diff --git a/drivers/base/core.c b/drivers/base/core.c
index c8a33df00761..6ab73f5c799a 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -191,6 +191,20 @@ void device_remove_file(struct device * dev, struct device_attribute * attr)
 	}
 }
 
+static void klist_children_get(struct klist_node *n)
+{
+	struct device *dev = container_of(n, struct device, knode_parent);
+
+	get_device(dev);
+}
+
+static void klist_children_put(struct klist_node *n)
+{
+	struct device *dev = container_of(n, struct device, knode_parent);
+
+	put_device(dev);
+}
+
 
 /**
  *	device_initialize - init device structure.
@@ -207,7 +221,8 @@ void device_initialize(struct device *dev)
 {
 	kobj_set_kset_s(dev, devices_subsys);
 	kobject_init(&dev->kobj);
-	klist_init(&dev->klist_children);
+	klist_init(&dev->klist_children, klist_children_get,
+		   klist_children_put);
 	INIT_LIST_HEAD(&dev->dma_pools);
 	init_MUTEX(&dev->sem);
 }
diff --git a/drivers/base/driver.c b/drivers/base/driver.c
index 291c5954a3af..ef3fe513e398 100644
--- a/drivers/base/driver.c
+++ b/drivers/base/driver.c
@@ -142,6 +142,19 @@ void put_driver(struct device_driver * drv)
 	kobject_put(&drv->kobj);
 }
 
+static void klist_devices_get(struct klist_node *n)
+{
+	struct device *dev = container_of(n, struct device, knode_driver);
+
+	get_device(dev);
+}
+
+static void klist_devices_put(struct klist_node *n)
+{
+	struct device *dev = container_of(n, struct device, knode_driver);
+
+	put_device(dev);
+}
 
 /**
  *	driver_register - register driver with bus
@@ -157,7 +170,7 @@ void put_driver(struct device_driver * drv)
  */
 int driver_register(struct device_driver * drv)
 {
-	klist_init(&drv->klist_devices);
+	klist_init(&drv->klist_devices, klist_devices_get, klist_devices_put);
 	init_completion(&drv->unloaded);
 	return bus_add_driver(drv);
 }