Merge branch 'samsung/soc' into next/soc2

[~andy/linux] / drivers / base / bus.c

diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index 99dc5921e1dd28be8e6a910964dde8ca14900238..26a06b801b5b24d3e77f3b8465026314c64624d6 100644 (file)
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c
@@ -915,9 +915,10 @@ static BUS_ATTR(uevent, S_IWUSR, NULL, bus_uevent_store);
 
 /**
  * __bus_register - register a driver-core subsystem
- * @bus: bus.
+ * @bus: bus to register
+ * @key: lockdep class key
  *
- * Once we have that, we registered the bus with the kobject
+ * Once we have that, we register the bus with the kobject
  * infrastructure, then register the children subsystems it has:
  * the devices and drivers that belong to the subsystem.
  */
@@ -1193,13 +1194,15 @@ EXPORT_SYMBOL_GPL(subsys_interface_register);
 
 void subsys_interface_unregister(struct subsys_interface *sif)
 {
-       struct bus_type *subsys = sif->subsys;
+       struct bus_type *subsys;
        struct subsys_dev_iter iter;
        struct device *dev;
 
-       if (!sif)
+       if (!sif || !sif->subsys)
                return;
 
+       subsys = sif->subsys;
+
        mutex_lock(&subsys->p->mutex);
        list_del_init(&sif->node);
        if (sif->remove_dev) {
@@ -1220,8 +1223,8 @@ static void system_root_device_release(struct device *dev)
 }
 /**
  * subsys_system_register - register a subsystem at /sys/devices/system/
- * @subsys - system subsystem
- * @groups - default attributes for the root device
+ * @subsys: system subsystem
+ * @groups: default attributes for the root device
  *
  * All 'system' subsystems have a /sys/devices/system/<name> root device
  * with the name of the subsystem. The root device can carry subsystem-