[PATCH] Add a klist to struct device_driver for the devices bound to it.

- Use it in driver_for_each_device() instead of the regular list_head and stop using
  the bus's rwsem for protection.
- Use driver_for_each_device() in driver_detach() so we don't deadlock on the
  bus's rwsem.
- Remove ->devices.
- Move klist access and sysfs link access out from under device's semaphore, since
  they're synchronized through other means.

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

1 files changed, 2 insertions, 1 deletions

diff --git a/include/linux/device.h b/include/linux/device.h
index ea9ab33dfe71..96c71b59fdef 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -105,7 +105,7 @@ struct device_driver {
 
         struct completion       unloaded;
         struct kobject          kobj;
-        struct list_head        devices;
+        struct klist            klist_devices;
         struct klist_node       knode_bus;
 
         struct module           * owner;
@@ -266,6 +266,7 @@ struct device {
         struct list_head bus_list;      /* node in bus's list */
         struct list_head driver_list;
         struct list_head children;
+        struct klist_node       knode_driver;
         struct klist_node       knode_bus;
         struct device   * parent;