[PATCH v5 48/48] kernel: Remove pm_power_off

[Guenter Roeck <linux@roeck-us.net>]

No users of pm_power_off are left, so it is safe to remove the function.

Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Len Brown <len.brown@intel.com>
Acked-by: Rafael J. Wysocki <rjw@rjwysocki.net>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
---
v5:
- Rebase to v3.18-rc3
v4:
- Do not use notifiers but internal functions and data structures to manage
  the list of power-off handlers. Drop unused parameters from callbacks, and
  make the power-off function type void
v3:
- Replace poweroff in all newly introduced variables and in text
  with power_off or power-off as appropriate
v2:
- poweroff -> power_off for API functions

 include/linux/pm.h               |  1 -
 kernel/power/power_off_handler.c | 13 +------------
 2 files changed, 1 insertion(+), 13 deletions(-)

diff --git a/include/linux/pm.h b/include/linux/pm.h
index a4d6bf8..8fcf352 100644
--- a/include/linux/pm.h
+++ b/include/linux/pm.h
@@ -31,7 +31,6 @@
 /*
  * Callbacks for platform drivers to implement.
  */
-extern void (*pm_power_off)(void);
 extern void (*pm_power_off_prepare)(void);
 
 struct device; /* we have a circular dep with device.h */
diff --git a/kernel/power/power_off_handler.c b/kernel/power/power_off_handler.c
index e283ea1..d67ab57 100644
--- a/kernel/power/power_off_handler.c
+++ b/kernel/power/power_off_handler.c
@@ -23,12 +23,6 @@
 #include <linux/types.h>
 
 /*
- * If set, calling this function will power off the system immediately.
- */
-void (*pm_power_off)(void);
-EXPORT_SYMBOL(pm_power_off);
-
-/*
  * List of handlers for kernel code which wants to be called
  * to power off the system.
  */
@@ -277,10 +271,6 @@ void do_kernel_power_off(void)
 	 * removed while the call chain is traversed, but we'll have to accept
 	 * that risk.
 	 */
-
-	if (pm_power_off)
-		pm_power_off();
-
 	p = rcu_dereference_raw(power_off_handler_list);
 	while (p) {
 		next_p = rcu_dereference_raw(p->next);
@@ -296,7 +286,6 @@ void do_kernel_power_off(void)
  */
 bool have_kernel_power_off(void)
 {
-	return pm_power_off != NULL ||
-			rcu_dereference_raw(power_off_handler_list) != NULL;
+	return rcu_dereference_raw(power_off_handler_list) != NULL;
 }
 EXPORT_SYMBOL(have_kernel_power_off);
-- 
1.9.1