From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Date: Tue, 6 Feb 2018 17:55:12 +0000 (+0100)
Subject: x86: PM: Make APM idle driver initialize polling state
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=43d38b079ca7466a9eebf2936584e091f8c20349;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

x86: PM: Make APM idle driver initialize polling state

commit f859422075165e32c00c8d75d63f300015cc07ae upstream.

Update the APM driver overlooked by commit 1b39e3f813b4 (cpuidle: Make
drivers initialize polling state) to initialize the polling state like
the other cpuidle drivers modified by that commit to prevent cpuidle
from crashing.

Fixes: 1b39e3f813b4 (cpuidle: Make drivers initialize polling state)
Reported-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Tested-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: 4.14+ <stable@vger.kernel.org> # 4.14+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/arch/x86/kernel/apm_32.c b/arch/x86/kernel/apm_32.c
index e4b0d92b3ae0..2a7fd56e67b3 100644
--- a/arch/x86/kernel/apm_32.c
+++ b/arch/x86/kernel/apm_32.c
@@ -2389,6 +2389,7 @@ static int __init apm_init(void)
 	if (HZ != 100)
 		idle_period = (idle_period * HZ) / 100;
 	if (idle_threshold < 100) {
+		cpuidle_poll_state_init(&apm_idle_driver);
 		if (!cpuidle_register_driver(&apm_idle_driver))
 			if (cpuidle_register_device(&apm_cpuidle_device))
 				cpuidle_unregister_driver(&apm_idle_driver);