[PATCH] Use a klist for device child lists.

- Use klist iterator in device_for_each_child(), making it safe to use for
  removing devices.
- Remove unused list_to_dev() function.
- Kills all usage of devices_subsys.rwsem.

Signed-off-by: Patrick Mochel <mochel@digitalimplant.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 2 insertions, 8 deletions

diff --git a/include/linux/device.h b/include/linux/device.h
index d2434934d091..43249260cd1c 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -262,8 +262,8 @@ extern void class_device_destroy(struct class *cls, dev_t devt);
 
 
 struct device {
-        struct list_head node;          /* node in sibling list */
-        struct list_head children;
+        struct klist            klist_children;
+        struct klist_node       knode_parent;           /* node in sibling list */
         struct klist_node       knode_driver;
         struct klist_node       knode_bus;
         struct device   * parent;
@@ -298,12 +298,6 @@ struct device {
         void    (*release)(struct device * dev);
 };
 
-static inline struct device *
-list_to_dev(struct list_head *node)
-{
-        return list_entry(node, struct device, node);
-}
-
 static inline void *
 dev_get_drvdata (struct device *dev)
 {