From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: Fri, 6 Apr 2018 07:06:23 +0000 (+0200)
Subject: Revert "cpufreq: Fix governor module removal race"
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=cfbed9b55636334f19059660b197fdffd40b8865;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

Revert "cpufreq: Fix governor module removal race"

This reverts commit 0049457bfde661cf47410eaacad65845c9a2bb45 which was
commit a8b149d32b663c1a4105273295184b78f53d33cf upstream.

The backport was not correct, so just drop it entirely.

Reported-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index bb1e148ebfd4..ea43b147a7fe 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -631,8 +631,6 @@ static int cpufreq_parse_governor(char *str_governor, unsigned int *policy,
 			*governor = t;
 			err = 0;
 		}
-		if (t && !try_module_get(t->owner))
-			t = NULL;
 
 		mutex_unlock(&cpufreq_governor_mutex);
 	}
@@ -761,10 +759,6 @@ static ssize_t store_scaling_governor(struct cpufreq_policy *policy,
 		return -EINVAL;
 
 	ret = cpufreq_set_policy(policy, &new_policy);
-
-	if (new_policy.governor)
-		module_put(new_policy.governor->owner);
-
 	return ret ? ret : count;
 }