linux-kernel - [PATCH] Cpufreq/governor: Remove fossil comment

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Date:	Wed, 11 Sep 2013 20:49:57 +0800
From:	tianyu.lan@...el.com
To:	rjw@...k.pl, viresh.kumar@...aro.org
Cc:	Lan Tianyu <tianyu.lan@...el.com>, cpufreq@...r.kernel.org,
	linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] Cpufreq/governor: Remove fossil comment

From: Lan Tianyu <tianyu.lan@...el.com>

cpufreq_set_policy() has been changed to origin __cpufreq_set_policy()
and policy->lock has been converted to rewrite lock by commit 5a01f2.
So remove the comment.

Acked-by: Viresh Kumar <viresh.kumar@...aro.org>
Signed-off-by: Lan Tianyu <tianyu.lan@...el.com>
---
This patch is based on patch "cpufreq: rename __cpufreq_set_policy()
as cpufreq_set_policy()."
http://marc.info/?l=linux-kernel&m=137889464210638&w=2

 drivers/cpufreq/cpufreq_userspace.c | 11 -----------
 1 file changed, 11 deletions(-)

diff --git a/drivers/cpufreq/cpufreq_userspace.c b/drivers/cpufreq/cpufreq_userspace.c
index 0307809..4dbf1db 100644
--- a/drivers/cpufreq/cpufreq_userspace.c
+++ b/drivers/cpufreq/cpufreq_userspace.c
@@ -38,18 +38,7 @@ static int cpufreq_set(struct cpufreq_policy *policy, unsigned int freq)
 	if (!per_cpu(cpu_is_managed, policy->cpu))
 		goto err;
 
-	/*
-	 * We're safe from concurrent calls to ->target() here
-	 * as we hold the userspace_mutex lock. If we were calling
-	 * cpufreq_driver_target, a deadlock situation might occur:
-	 * A: cpufreq_set (lock userspace_mutex) ->
-	 *      cpufreq_driver_target(lock policy->lock)
-	 * B: cpufreq_set_policy(lock policy->lock) ->
-	 *      __cpufreq_governor ->
-	 *         cpufreq_governor_userspace (lock userspace_mutex)
-	 */
 	ret = __cpufreq_driver_target(policy, freq, CPUFREQ_RELATION_L);
-
  err:
 	mutex_unlock(&userspace_mutex);
 	return ret;
-- 
1.8.4.rc0.1.g8f6a3e5.dirty

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