1 files changed, 10 insertions, 0 deletions

diff --git a/arch/s390/include/asm/ccwgroup.h b/arch/s390/include/asm/ccwgroup.h
index a27f68985a79..c79c1e787b86 100644
--- a/arch/s390/include/asm/ccwgroup.h
+++ b/arch/s390/include/asm/ccwgroup.h
@@ -38,6 +38,11 @@ struct ccwgroup_device {
  * @set_online: function called when device is set online
  * @set_offline: function called when device is set offline
  * @shutdown: function called when device is shut down
+ * @prepare: prepare for pm state transition
+ * @complete: undo work done in @prepare
+ * @freeze: callback for freezing during hibernation snapshotting
+ * @thaw: undo work done in @freeze
+ * @restore: callback for restoring after hibernation
  * @driver: embedded driver structure
  */
 struct ccwgroup_driver {
@@ -51,6 +56,11 @@ struct ccwgroup_driver {
         int (*set_online) (struct ccwgroup_device *);
         int (*set_offline) (struct ccwgroup_device *);
         void (*shutdown)(struct ccwgroup_device *);
+        int (*prepare) (struct ccwgroup_device *);
+        void (*complete) (struct ccwgroup_device *);
+        int (*freeze)(struct ccwgroup_device *);
+        int (*thaw) (struct ccwgroup_device *);
+        int (*restore)(struct ccwgroup_device *);
 
         struct device_driver driver;
 };