PM: Move definition of struct pm_ops to suspend.h

Move the definition of 'struct pm_ops' and related functions from <linux/pm.h>
to <linux/suspend.h> .

There are, at least, the following reasons to do that:
* 'struct pm_ops' is specifically related to suspend and not to the power
  management in general.
* As long as 'struct pm_ops' is defined in <linux/pm.h>, any modification of it
  causes the entire kernel to be recompiled, which is unnecessary and annoying.
* Some suspend-related features are already defined in <linux/suspend.h>, so it
  is logical to move the definition of 'struct pm_ops' into there.
* 'struct hibernation_ops', being the hibernation-related counterpart of
  'struct pm_ops', is defined in <linux/suspend.h> .

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Cc: Len Brown <lenb@kernel.org>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 0 insertions, 98 deletions

diff --git a/include/linux/pm.h b/include/linux/pm.h
index 48b71badfb4c..09a309b7b5d2 100644
--- a/include/linux/pm.h
+++ b/include/linux/pm.h
@@ -104,104 +104,6 @@ extern void (*pm_idle)(void);
 extern void (*pm_power_off)(void);
 extern void (*pm_power_off_prepare)(void);
 
-typedef int __bitwise suspend_state_t;
-
-#define PM_SUSPEND_ON           ((__force suspend_state_t) 0)
-#define PM_SUSPEND_STANDBY      ((__force suspend_state_t) 1)
-#define PM_SUSPEND_MEM          ((__force suspend_state_t) 3)
-#define PM_SUSPEND_MAX          ((__force suspend_state_t) 4)
-
-/**
- * struct pm_ops - Callbacks for managing platform dependent system sleep
- *      states.
- *
- * @valid: Callback to determine if given system sleep state is supported by
- *      the platform.
- *      Valid (ie. supported) states are advertised in /sys/power/state.  Note
- *      that it still may be impossible to enter given system sleep state if the
- *      conditions aren't right.
- *      There is the %pm_valid_only_mem function available that can be assigned
- *      to this if the platform only supports mem sleep.
- *
- * @set_target: Tell the platform which system sleep state is going to be
- *      entered.
- *      @set_target() is executed right prior to suspending devices.  The
- *      information conveyed to the platform code by @set_target() should be
- *      disregarded by the platform as soon as @finish() is executed and if
- *      @prepare() fails.  If @set_target() fails (ie. returns nonzero),
- *      @prepare(), @enter() and @finish() will not be called by the PM core.
- *      This callback is optional.  However, if it is implemented, the argument
- *      passed to @prepare(), @enter() and @finish() is meaningless and should
- *      be ignored.
- *
- * @prepare: Prepare the platform for entering the system sleep state indicated
- *      by @set_target() or represented by the argument if @set_target() is not
- *      implemented.
- *      @prepare() is called right after devices have been suspended (ie. the
- *      appropriate .suspend() method has been executed for each device) and
- *      before the nonboot CPUs are disabled (it is executed with IRQs enabled).
- *      This callback is optional.  It returns 0 on success or a negative
- *      error code otherwise, in which case the system cannot enter the desired
- *      sleep state (@enter() and @finish() will not be called in that case).
- *
- * @enter: Enter the system sleep state indicated by @set_target() or
- *      represented by the argument if @set_target() is not implemented.
- *      This callback is mandatory.  It returns 0 on success or a negative
- *      error code otherwise, in which case the system cannot enter the desired
- *      sleep state.
- *
- * @finish: Called when the system has just left a sleep state, right after
- *      the nonboot CPUs have been enabled and before devices are resumed (it is
- *      executed with IRQs enabled).  If @set_target() is not implemented, the
- *      argument represents the sleep state being left.
- *      This callback is optional, but should be implemented by the platforms
- *      that implement @prepare().  If implemented, it is always called after
- *      @enter() (even if @enter() fails).
- */
-struct pm_ops {
-        int (*valid)(suspend_state_t state);
-        int (*set_target)(suspend_state_t state);
-        int (*prepare)(suspend_state_t state);
-        int (*enter)(suspend_state_t state);
-        int (*finish)(suspend_state_t state);
-};
-
-#ifdef CONFIG_SUSPEND
-extern struct pm_ops *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 int pm_valid_only_mem(suspend_state_t state);
-
-/**
- * arch_suspend_disable_irqs - disable IRQs for suspend
- *
- * Disables IRQs (in the default case). This is a weak symbol in the common
- * code and thus allows architectures to override it if more needs to be
- * done. Not called for suspend to disk.
- */
-extern void arch_suspend_disable_irqs(void);
-
-/**
- * arch_suspend_enable_irqs - enable IRQs after suspend
- *
- * Enables IRQs (in the default case). This is a weak symbol in the common
- * code and thus allows architectures to override it if more needs to be
- * done. Not called for suspend to disk.
- */
-extern void arch_suspend_enable_irqs(void);
-
-extern int pm_suspend(suspend_state_t state);
-#else /* !CONFIG_SUSPEND */
-#define suspend_valid_only_mem  NULL
-
-static inline void pm_set_ops(struct pm_ops *pm_ops) {}
-static inline int pm_suspend(suspend_state_t state) { return -ENOSYS; }
-#endif /* !CONFIG_SUSPEND */
-
 /*
  * Device power management
  */