From ab2a1fece8e65bc707b631960525f6c6189b8b5e Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Tue, 3 Aug 2021 16:16:13 +0200
Subject: [PATCH] PM: sleep: s2idle: Replace deprecated CPU-hotplug functions

References: bsc#1189998 (PREEMPT_RT prerequisite backports)
Patch-mainline: v5.15-rc1
Git-commit: d2c8cce647f3022d5960a3bf2b50a2da341d9c8b

The functions get_online_cpus() and put_online_cpus() have been
deprecated during the CPU hotplug rework. They map directly to
cpus_read_lock() and cpus_read_unlock().

Replace deprecated CPU-hotplug functions with the official version.
The behavior remains unchanged.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Mel Gorman <mgorman@suse.de>
---
 kernel/power/suspend.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/power/suspend.c b/kernel/power/suspend.c
index d8cae434f9eb..eb75f394a059 100644
--- a/kernel/power/suspend.c
+++ b/kernel/power/suspend.c
@@ -96,7 +96,7 @@ static void s2idle_enter(void)
 	s2idle_state = S2IDLE_STATE_ENTER;
 	raw_spin_unlock_irq(&s2idle_lock);
 
-	get_online_cpus();
+	cpus_read_lock();
 	cpuidle_resume();
 
 	/* Push all the CPUs into the idle loop. */
@@ -106,7 +106,7 @@ static void s2idle_enter(void)
 		    s2idle_state == S2IDLE_STATE_WAKE);
 
 	cpuidle_pause();
-	put_online_cpus();
+	cpus_read_unlock();
 
 	raw_spin_lock_irq(&s2idle_lock);