linux-kernel - Re: [Patch v2] cpufreq: tegra194: remove opp table in exit hook

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Message-ID: <d3318a98-4d61-73f7-07ab-787624edfdcd@nvidia.com>
Date:   Mon, 28 Aug 2023 17:55:01 +0530
From:   Sumit Gupta <sumitg@...dia.com>
To:     Viresh Kumar <viresh.kumar@...aro.org>
CC:     <rafael@...nel.org>, <treding@...dia.com>, <jonathanh@...dia.com>,
        <linux-pm@...r.kernel.org>, <linux-tegra@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <bbasu@...dia.com>
Subject: Re: [Patch v2] cpufreq: tegra194: remove opp table in exit hook



On 28/08/23 15:47, Viresh Kumar wrote:
> External email: Use caution opening links or attachments
> 
> 
> On 28-08-23, 11:41, Viresh Kumar wrote:
>> On 25-08-23, 16:46, Sumit Gupta wrote:
>>> Add exit hook and remove OPP table when the device gets unregistered.
>>> This will fix the error messages when the CPU FREQ driver module is
>>> removed and then re-inserted. It also fixes these messages while
>>> onlining the first CPU from a policy whose all CPU's were previously
>>> offlined.
>>>
>>>   debugfs: File 'cpu5' in directory 'opp' already present!
>>>   debugfs: File 'cpu6' in directory 'opp' already present!
>>>   debugfs: File 'cpu7' in directory 'opp' already present!
>>>
>>> Fixes: f41e1442ac5b ("cpufreq: tegra194: add OPP support and set bandwidth")
>>> Signed-off-by: Sumit Gupta <sumitg@...dia.com>
>>> ---
>>>
>>> v1[1] -> v2:
>>> - updated commit description.
>>>
>>> [1] https://lore.kernel.org/lkml/20230809153455.29056-1-sumitg@nvidia.com/
>>>
>>>   drivers/cpufreq/tegra194-cpufreq.c | 13 +++++++++++++
>>>   1 file changed, 13 insertions(+)
>>>
>>> diff --git a/drivers/cpufreq/tegra194-cpufreq.c b/drivers/cpufreq/tegra194-cpufreq.c
>>> index c90b30469165..66a9c23544db 100644
>>> --- a/drivers/cpufreq/tegra194-cpufreq.c
>>> +++ b/drivers/cpufreq/tegra194-cpufreq.c
>>> @@ -454,6 +454,8 @@ static int tegra_cpufreq_init_cpufreq_table(struct cpufreq_policy *policy,
>>>              if (ret < 0)
>>>                      return ret;
>>>
>>> +           dev_pm_opp_put(opp);
>>> +
>>
>> Missed this earlier, can you please do this in a separate patch please
>> ?
> 
> I have pushed rest of this commit and dropped this part. Send it
> separately. Thanks.
> 
> --
> viresh

Thank you.
Sent the change separately @
  https://lore.kernel.org/lkml/20230828120959.24680-1-sumitg@nvidia.com/

Regards,
Sumit Gupta