Introduce CONFIG_SUSPEND for suspend-to-Ram and standby
Introduce CONFIG_SUSPEND representing the ability to enter system sleep
states, such as the ACPI S3 state, and allow the user to choose SUSPEND
and HIBERNATION independently of each other.
Make HOTPLUG_CPU be selected automatically if SUSPEND or HIBERNATION has
been chosen and the kernel is intended for SMP systems.
Also, introduce CONFIG_PM_SLEEP which is automatically selected if
CONFIG_SUSPEND or CONFIG_HIBERNATION is set and use it to select the
code needed for both suspend and hibernation.
The top-level power management headers and the ACPI code related to
suspend and hibernation are modified to use the new definitions (the
changes in drivers/acpi/sleep/main.c are, mostly, moving code to reduce
the number of ifdefs).
There are many other files in which CONFIG_PM can be replaced with
CONFIG_PM_SLEEP or even with CONFIG_SUSPEND, but they can be updated in
the future.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/base/power/power.h b/drivers/base/power/power.h
index 591a0dd..8ba0830 100644
--- a/drivers/base/power/power.h
+++ b/drivers/base/power/power.h
@@ -5,7 +5,7 @@
extern void device_shutdown(void);
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
/*
* main.c
@@ -62,7 +62,7 @@
*/
extern int suspend_device(struct device *, pm_message_t);
-#else /* CONFIG_PM */
+#else /* CONFIG_PM_SLEEP */
static inline int device_pm_add(struct device * dev)