Hibernation: Introduce begin() and end() callbacks

[linux-2.6-omap-h63xx.git] / include / linux / suspend.h

diff --git a/include/linux/suspend.h b/include/linux/suspend.h
index a0b1dbb5919fb72de7f8bf4a2c973bf0d218b7fd..646ce2d068d4398b13c3a31d61e2350c14ab355a 100644 (file)
--- a/include/linux/suspend.h
+++ b/include/linux/suspend.h
@@ -136,14 +136,17 @@ extern void mark_free_pages(struct zone *zone);
 /**
  * struct platform_hibernation_ops - hibernation platform support
  *
- * The methods in this structure allow a platform to override the default
- * mechanism of shutting down the machine during a hibernation transition.
+ * The methods in this structure allow a platform to carry out special
+ * operations required by it during a hibernation transition.
  *
- * All three methods must be assigned.
+ * All the methods below must be implemented.
  *
- * @start: Tell the platform driver that we're starting hibernation.
+ * @begin: Tell the platform driver that we're starting hibernation.
  *     Called right after shrinking memory and before freezing devices.
  *
+ * @end: Called by the PM core right after resuming devices, to indicate to
+ *     the platform that the system has returned to the working state.
+ *
  * @pre_snapshot: Prepare the platform for creating the hibernation image.
  *     Called right after devices have been frozen and before the nonboot
  *     CPUs are disabled (runs with IRQs on).
@@ -178,7 +181,8 @@ extern void mark_free_pages(struct zone *zone);
  *     thawing devices (runs with IRQs on).
  */
 struct platform_hibernation_ops {
-       int (*start)(void);
+       int (*begin)(void);
+       void (*end)(void);
        int (*pre_snapshot)(void);
        void (*finish)(void);
        int (*prepare)(void);