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SubjectRe: [PATCH 1/1] Cpufreq: Remove fossil comment of cpufreq_set_policy
On 09/11/2013 06:08 AM, Viresh Kumar wrote:
> On 11 September 2013 08:58, Lan Tianyu <tianyu.lan@intel.com> wrote:
>> From 668e1b6fd94b5c0e56a651b4c60cbbc7a6868b46 Mon Sep 17 00:00:00 2001
>> From: Lan Tianyu <tianyu.lan@intel.com>
>> Date: Wed, 11 Sep 2013 11:31:15 +0800
>> Subject: [PATCH] Cpufreq/governor: Remove fossil comment
>>
>> 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 it.
>>
>> Signed-off-by: Lan Tianyu <tianyu.lan@intel.com>
>> ---
>> 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;
>
> Looks fine:
>
> Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
>

Thanks. I will send formal version.



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