devres: release resources on device_del()

Some platform devices are driven without driver attached, so managed
resources can be acquired without driver attached.  Make sure such
resources are released by calling devres_release_all() in
device_del().

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

diff --git a/drivers/base/core.c b/drivers/base/core.c
index cf2a398..89ebe36 100644 (file)
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -787,6 +787,13 @@ void device_del(struct device * dev)
        device_remove_attrs(dev);
        bus_remove_device(dev);
 
+       /*
+        * Some platform devices are driven without driver attached
+        * and managed resources may have been acquired.  Make sure
+        * all resources are released.
+        */
+       devres_release_all(dev);
+
        /* Notify the platform of the removal, in case they
         * need to do anything...
         */