* [PATCH v2] cpufreq/amd-pstate: Add the missing cpufreq_cpu_put()
@ 2024-08-08 12:36 Dhananjay Ugwekar
2024-08-09 5:14 ` Viresh Kumar
0 siblings, 1 reply; 3+ messages in thread
From: Dhananjay Ugwekar @ 2024-08-08 12:36 UTC (permalink / raw)
To: ray.huang, gautham.shenoy, mario.limonciello, perry.yuan, rafael,
viresh.kumar, li.meng
Cc: linux-pm, linux-kernel, Dhananjay Ugwekar
Fix the reference counting of cpufreq_policy object in amd_pstate_update()
function by adding the missing cpufreq_cpu_put().
Fixes: e8f555daacd3 ("cpufreq/amd-pstate: fix setting policy current frequency value")
Signed-off-by: Dhananjay Ugwekar <Dhananjay.Ugwekar@amd.com>
Reviewed-by: Perry Yuan <perry.yuan@amd.com>
---
drivers/cpufreq/amd-pstate.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c
index 804fab4ebb26..36edae40db1a 100644
--- a/drivers/cpufreq/amd-pstate.c
+++ b/drivers/cpufreq/amd-pstate.c
@@ -560,6 +560,8 @@ static void amd_pstate_update(struct amd_cpudata *cpudata, u32 min_perf,
amd_pstate_update_perf(cpudata, min_perf, des_perf,
max_perf, fast_switch);
+
+ cpufreq_cpu_put(policy);
}
static int amd_pstate_verify(struct cpufreq_policy_data *policy)
--
2.34.1
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [PATCH v2] cpufreq/amd-pstate: Add the missing cpufreq_cpu_put()
2024-08-08 12:36 [PATCH v2] cpufreq/amd-pstate: Add the missing cpufreq_cpu_put() Dhananjay Ugwekar
@ 2024-08-09 5:14 ` Viresh Kumar
2024-08-09 5:27 ` Dhananjay Ugwekar
0 siblings, 1 reply; 3+ messages in thread
From: Viresh Kumar @ 2024-08-09 5:14 UTC (permalink / raw)
To: Dhananjay Ugwekar
Cc: ray.huang, gautham.shenoy, mario.limonciello, perry.yuan, rafael,
li.meng, linux-pm, linux-kernel
On 08-08-24, 12:36, Dhananjay Ugwekar wrote:
> Fix the reference counting of cpufreq_policy object in amd_pstate_update()
> function by adding the missing cpufreq_cpu_put().
>
> Fixes: e8f555daacd3 ("cpufreq/amd-pstate: fix setting policy current frequency value")
> Signed-off-by: Dhananjay Ugwekar <Dhananjay.Ugwekar@amd.com>
> Reviewed-by: Perry Yuan <perry.yuan@amd.com>
> ---
> drivers/cpufreq/amd-pstate.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c
> index 804fab4ebb26..36edae40db1a 100644
> --- a/drivers/cpufreq/amd-pstate.c
> +++ b/drivers/cpufreq/amd-pstate.c
> @@ -560,6 +560,8 @@ static void amd_pstate_update(struct amd_cpudata *cpudata, u32 min_perf,
>
> amd_pstate_update_perf(cpudata, min_perf, des_perf,
> max_perf, fast_switch);
> +
> + cpufreq_cpu_put(policy);
There is an early return path in this routine, which still doesn't
perform this action.
--
viresh
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [PATCH v2] cpufreq/amd-pstate: Add the missing cpufreq_cpu_put()
2024-08-09 5:14 ` Viresh Kumar
@ 2024-08-09 5:27 ` Dhananjay Ugwekar
0 siblings, 0 replies; 3+ messages in thread
From: Dhananjay Ugwekar @ 2024-08-09 5:27 UTC (permalink / raw)
To: Viresh Kumar
Cc: ray.huang, gautham.shenoy, mario.limonciello, perry.yuan, rafael,
li.meng, linux-pm, linux-kernel
On 8/9/2024 10:44 AM, Viresh Kumar wrote:
> On 08-08-24, 12:36, Dhananjay Ugwekar wrote:
>> Fix the reference counting of cpufreq_policy object in amd_pstate_update()
>> function by adding the missing cpufreq_cpu_put().
>>
>> Fixes: e8f555daacd3 ("cpufreq/amd-pstate: fix setting policy current frequency value")
>> Signed-off-by: Dhananjay Ugwekar <Dhananjay.Ugwekar@amd.com>
>> Reviewed-by: Perry Yuan <perry.yuan@amd.com>
>> ---
>> drivers/cpufreq/amd-pstate.c | 2 ++
>> 1 file changed, 2 insertions(+)
>>
>> diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c
>> index 804fab4ebb26..36edae40db1a 100644
>> --- a/drivers/cpufreq/amd-pstate.c
>> +++ b/drivers/cpufreq/amd-pstate.c
>> @@ -560,6 +560,8 @@ static void amd_pstate_update(struct amd_cpudata *cpudata, u32 min_perf,
>>
>> amd_pstate_update_perf(cpudata, min_perf, des_perf,
>> max_perf, fast_switch);
>> +
>> + cpufreq_cpu_put(policy);
>
> There is an early return path in this routine, which still doesn't
> perform this action.
Thanks for catching this, will fix in next version
Regards,
Dhananjay
>
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2024-08-09 5:27 UTC | newest]
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2024-08-08 12:36 [PATCH v2] cpufreq/amd-pstate: Add the missing cpufreq_cpu_put() Dhananjay Ugwekar
2024-08-09 5:14 ` Viresh Kumar
2024-08-09 5:27 ` Dhananjay Ugwekar
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