linux-kernel - Re: [PATCH] opp: Increase parsed_static_opps on _of_add_opp_table

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Message-ID: <34634b9e-2f6f-d8d8-ccf3-39841301cd65@collabora.com>
Date:   Thu, 16 Jul 2020 09:57:37 -0300
From:   Walter Lozano <walter.lozano@...labora.com>
To:     Viresh Kumar <viresh.kumar@...aro.org>
Cc:     linux-pm@...r.kernel.org, kernel@...labora.com,
        Nishanth Menon <nm@...com>, Stephen Boyd <sboyd@...nel.org>,
        Viresh Kumar <vireshk@...nel.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] opp: Increase parsed_static_opps on _of_add_opp_table_v1

Hi Viresh,

On 16/7/20 00:22, Viresh Kumar wrote:
> On 15-07-20, 23:54, Walter Lozano wrote:
>> Currently, when using _of_add_opp_table_v2 parsed_static_opps is
>> increased and this value is used on _opp_remove_all_static to
>> check if there are static opps entries that need to be freed.
>> Unfortunately this does not happens when using _of_add_opp_table_v1,
>> which leads to warnings.
>>
>> This patch increases parsed_static_opps on _of_add_opp_table_v1 in a
>> similar way as in _of_add_opp_table_v2.
>>
>> Signed-off-by: Walter Lozano <walter.lozano@...labora.com>
>> ---
>>
>>   drivers/opp/of.c | 2 ++
>>   1 file changed, 2 insertions(+)
>>
>> diff --git a/drivers/opp/of.c b/drivers/opp/of.c
>> index 9a5873591a40..b2bc82bf8b42 100644
>> --- a/drivers/opp/of.c
>> +++ b/drivers/opp/of.c
>> @@ -917,6 +917,8 @@ static int _of_add_opp_table_v1(struct device *dev, struct opp_table *opp_table)
>>   		nr -= 2;
>>   	}
>>   
>> +	opp_table->parsed_static_opps++;
>> +
>>   	return ret;
>>   }
> Merged with this and added relevant Fixes and stable tags.


Thanks for apply the proper fix.


>
> diff --git a/drivers/opp/of.c b/drivers/opp/of.c
> index b2bc82bf8b42..314f306140a1 100644
> --- a/drivers/opp/of.c
> +++ b/drivers/opp/of.c
> @@ -902,6 +902,10 @@ static int _of_add_opp_table_v1(struct device *dev, struct opp_table *opp_table)
>                  return -EINVAL;
>          }
>   
> +       mutex_lock(&opp_table->lock);
> +       opp_table->parsed_static_opps = 1;
> +       mutex_unlock(&opp_table->lock);
> +
>          val = prop->value;
>          while (nr) {
>                  unsigned long freq = be32_to_cpup(val++) * 1000;
> @@ -917,8 +921,6 @@ static int _of_add_opp_table_v1(struct device *dev, struct opp_table *opp_table)
>                  nr -= 2;
>          }
>   
> -       opp_table->parsed_static_opps++;
> -
>          return ret;
>   }
>