The patch titled
power management: fix struct layout and docs
has been added to the -mm tree. Its filename is
power-management-fix-struct-layout-and-docs.patch
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------------------------------------------------------
Subject: power management: fix struct layout and docs
From: Johannes Berg <johannes@xxxxxxxxxxxxxxxx>
Because the pm ops in powermac are obviously not using them as intended, I
added documentation for it in kernel-doc format.
Reordering the fields in struct pm_ops not only makes the output of kernel-doc
make more sense but also removes a hole from the structure on 64-bit
platforms.
Signed-off-by: Johannes Berg <johannes@xxxxxxxxxxxxxxxx>
Cc: "Randy.Dunlap" <rdunlap@xxxxxxxxxxxx>
Cc: Rafael J. Wysocki <rjw@xxxxxxx>
Cc: Pavel Macheck <pavel@xxxxxx>
Cc: Greg KH <greg@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/pm.h | 37 +++++++++++++++++++++++++++++++++++--
1 files changed, 35 insertions(+), 2 deletions(-)
diff -puN include/linux/pm.h~power-management-fix-struct-layout-and-docs include/linux/pm.h
--- a/include/linux/pm.h~power-management-fix-struct-layout-and-docs
+++ a/include/linux/pm.h
@@ -120,15 +120,48 @@ typedef int __bitwise suspend_disk_metho
#define PM_DISK_TESTPROC ((__force suspend_disk_method_t) 6)
#define PM_DISK_MAX ((__force suspend_disk_method_t) 7)
+/**
+ * struct pm_ops - Callbacks for managing platform dependent suspend states.
+ * @valid: Callback to determine whether the given state can be entered.
+ * If %CONFIG_SOFTWARE_SUSPEND is set then %PM_SUSPEND_DISK is
+ * always valid and never passed to this call.
+ * If not assigned, all suspend states are advertised as valid
+ * in /sys/power/state (but can still be rejected by prepare or enter.)
+ *
+ * @prepare: Prepare the platform for the given suspend state. Can return a
+ * negative error code if necessary.
+ *
+ * @enter: Enter the given suspend state, must be assigned. Can return a
+ * negative error code if necessary.
+ *
+ * @finish: Called when the system has left the given state and all devices
+ * are resumed. The return value is ignored.
+ *
+ * @pm_disk_mode: Set to the disk method that the user should be able to
+ * configure for suspend-to-disk. Since %PM_DISK_SHUTDOWN,
+ * %PM_DISK_REBOOT, %PM_DISK_TEST and %PM_DISK_TESTPROC
+ * are always allowed, currently only %PM_DISK_PLATFORM
+ * makes sense. If the user then choses %PM_DISK_PLATFORM,
+ * the @prepare call will be called before suspending to disk
+ * (if present), the @enter call should be present and will
+ * be called after all state has been saved and the machine
+ * is ready to be shut down/suspended/..., and the @finish
+ * callback is called after state has been restored. All
+ * these calls are called with %PM_SUSPEND_DISK as the state.
+ */
struct pm_ops {
- suspend_disk_method_t pm_disk_mode;
int (*valid)(suspend_state_t state);
int (*prepare)(suspend_state_t state);
int (*enter)(suspend_state_t state);
int (*finish)(suspend_state_t state);
+ suspend_disk_method_t pm_disk_mode;
};
-extern void pm_set_ops(struct pm_ops *);
+/**
+ * pm_set_ops - set platform dependent power management ops
+ * @pm_ops: The new power management operations to set.
+ */
+extern void pm_set_ops(struct pm_ops *pm_ops);
extern struct pm_ops *pm_ops;
extern int pm_suspend(suspend_state_t state);
_
Patches currently in -mm which might be from johannes@xxxxxxxxxxxxxxxx are
origin.patch
power-management-no-valid-states-w-o-pm_ops-docs.patch
power-management-fix-struct-layout-and-docs.patch
-
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