PM: suspend: Fix pm_suspend_target_state handling for !CONFIG_PM

Move the pm_suspend_target_state definition for CONFIG_SUSPEND
unset from the wakeup code into the headers so as to allow it
to still be used elsewhere when CONFIG_SUSPEND is not set.

Signed-off-by: Kai-Heng Feng <[e-mail]>
[ rjw: Changelog and subject edits ]
Signed-off-by: Rafael J. Wysocki <[e-mail]>

drivers/base/power/wakeup.c

···
 
 #include "power.h"
 
-#ifndef CONFIG_SUSPEND
-suspend_state_t pm_suspend_target_state;
-#define pm_suspend_target_state	(PM_SUSPEND_ON)
-#endif
-
 #define list_for_each_entry_rcu_locked(pos, head, member) \
 	list_for_each_entry_rcu(pos, head, member, \
 		srcu_read_lock_held(&wakeup_srcu))

include/linux/suspend.h

···
 };
 
 #ifdef CONFIG_SUSPEND
+extern suspend_state_t pm_suspend_target_state;
 extern suspend_state_t mem_sleep_current;
 extern suspend_state_t mem_sleep_default;
 
···
 extern bool sync_on_suspend_enabled;
 #else /* !CONFIG_SUSPEND */
 #define suspend_valid_only_mem	NULL
+
+#define pm_suspend_target_state	(PM_SUSPEND_ON)
 
 static inline void pm_suspend_clear_flags(void) {}
 static inline void pm_set_suspend_via_firmware(void) {}
···
 
 /* drivers/base/power/wakeup.c */
 extern bool events_check_enabled;
-extern suspend_state_t pm_suspend_target_state;
 
 extern bool pm_wakeup_pending(void);
 extern void pm_system_wakeup(void);