Subject: [PATCH v4 25/25] reboot: Remove pm_power_off_prepare()

From: Dmitry Osipenko <[email-masked]>
Date: Fri, 26 Nov 2021 21:01:01 +0300

All pm_power_off_prepare() users were converted to sys-off handler API.
Remove the obsolete callback.

Signed-off-by: Dmitry Osipenko <[email-masked]>
---
 include/linux/pm.h |  1 -
 kernel/reboot.c    | 11 -----------
 2 files changed, 12 deletions(-)

diff --git a/include/linux/pm.h b/include/linux/pm.h
index 1d8209c09686..d9bf1426f81e 100644
--- a/include/linux/pm.h
+++ b/include/linux/pm.h
@@ -20,7 +20,6 @@
  * 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 */
 #ifdef CONFIG_VT_CONSOLE_SLEEP
diff --git a/kernel/reboot.c b/kernel/reboot.c
index 4884204f9a31..a832bb660040 100644
--- a/kernel/reboot.c
+++ b/kernel/reboot.c
@@ -48,13 +48,6 @@ int reboot_cpu;
 enum reboot_type reboot_type = BOOT_ACPI;
 int reboot_force;
 
-/*
- * If set, this is used for preparing the system to power off.
- */
-
-void (*pm_power_off_prepare)(void);
-EXPORT_SYMBOL_GPL(pm_power_off_prepare);
-
 /**
  *	emergency_restart - reboot the system
  *
@@ -807,10 +800,6 @@ void do_kernel_power_off(void)
 
 static void do_kernel_power_off_prepare(void)
 {
-	/* legacy pm_power_off_prepare() is unchained and has highest priority */
-	if (pm_power_off_prepare)
-		return pm_power_off_prepare();
-
 	blocking_notifier_call_chain(&power_off_handler_list, POWEROFF_PREPARE,
 				     NULL);
 }
-- 
2.33.1