[PATCH] class: add a semaphore to struct class, and use that instead of the subsystem rwsem.

This moves us away from using the rwsem, although recursive adds and removes of class devices
is not yet possible (nor is it really known if it even is needed.)  So this simple change is
done instead.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 1 insertions, 1 deletions

diff --git a/include/linux/device.h b/include/linux/device.h
index e98232688899..a33424d41038 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -15,7 +15,6 @@
 #include <linux/ioport.h>
 #include <linux/kobject.h>
 #include <linux/list.h>
-#include <linux/spinlock.h>
 #include <linux/types.h>
 #include <linux/module.h>
 #include <linux/pm.h>
@@ -148,6 +147,7 @@ struct class {
 	struct subsystem	subsys;
 	struct list_head	children;
 	struct list_head	interfaces;
+	struct semaphore	sem;	/* locks both the children and interfaces lists */
 
 	struct class_attribute		* class_attrs;
 	struct class_device_attribute	* class_dev_attrs;